Thu, 27 Oct 2016 08:00:00 EDTDescribed is a frequency generator for producing a frequency ramp. The frequency generator includes a first voltage controlled oscillator, which has a plurality of switchable sub-bands and is designed to produce a first frequency signal, wherein a switching from one sub-band to a neighboring sub-band occurs at predetermined first switching locations, as well as a second voltage controlled oscillator, which has a plurality of switchable sub-bands and is designed to produce a second frequency signal. A switching from one sub-band to a neighboring sub-band occurs at predetermined second switching locations. The sub-bands of the second voltage controlled oscillator are arranged offset in frequency relative to the sub-bands of the first voltage controlled oscillator. The frequency generator is designed to switch either the first frequency signal or the second frequency signal through to the output of the electronic switch element, and to switch the electronic switch element such that during the producing of the frequency ramp alternately either the first frequency signal or the second frequency signal is switched through to the output of the electronic switch element, wherein, in each case, when at one of the voltage controlled oscillators the switching between two neighboring sub-bands is occurring, the frequency signal produced by the respectively other voltage controlled oscillator is switched through to the output of the electronic switch element.
Thu, 27 Oct 2016 08:00:00 EDTAn MFPB antenna comprises a plurality of RF feeds with four ports and a BFN, the number of feeds per beam being equal to four, and a single structural interface board, covering all of the ports of the RF feeds, and comprising a plurality of through waveguides. The through waveguides are positioned according to a matrix with multiple rows and multiple columns. The RF feeds are grouped into subassemblies that are respectively integrated in various independent cluster sources mounted one beside the other on the front face of the interface board, the ports of the RF feeds of each cluster source being connected to the through waveguides. The BFN is composed of multiple independent linear partial BFNs, mounted side by side on the back face of the interface board, the various ports of the power combiners that are integrated in each linear partial BFN being connected to the through waveguides.
Thu, 27 Oct 2016 08:00:00 EDTAn apparatus comprising a first antenna, a second antenna, a processor and a memory. The first antenna may be configured to connect to a GPS satellite. The second antenna may be configured to connect to the GPS satellite. The first antenna is positioned separately from the second antenna. The processor may be configured to execute instructions. The memory may be configured to store the instructions that, when executed, perform the steps of (i) calculating a first value measured through a connection between the first antenna and the GPS satellite, (ii) calculating a second value measured through a connection between the second antenna and the GPS satellite, and (iii) determining a correction value to compensate for local conditions by analyzing differences between the first value and the second value.
Thu, 27 Oct 2016 08:00:00 EDTPosition, navigation and/or timing (PNT) solutions may be provided with levels of precision that have previously and conventionally been associated with carrier phase differential GPS (CDGPS) techniques that employ a fixed terrestrial reference station or with GPS PPP techniques that employ fixed terrestrial stations and corrections distribution networks of generally limited terrestrial coverage. Using techniques described herein, high-precision PNT solutions may be provided without resort to a generally proximate, terrestrial ground station having a fixed and precisely known position. Instead, techniques described herein utilize a carrier phase model and measurements from plural satellites (typically 4 or more) wherein at least one is a low earth orbiting (LEO) satellite. For an Iridium LEO solution, particular techniques are described that allow extraction of an Iridium carrier phase observables, notwithstanding TDMA gaps and random phase rotations and biases inherent in the transmitted signals.
Thu, 27 Oct 2016 08:00:00 EDTAn in-band pseudolite wireless positioning method, system and device are provided. The system has a base station, a pseudolite and a terminal. The base station transmits identifier information to the pseudolite after correcting a transmission clock of the pseudolite and transmits a pseudolite array and positioning correction information to the terminal. The pseudolite generates a random positioning signal sequence according to the identifier information and transmits a positioning signal according to the transmission clock and the random positioning signal sequence. The terminal generates a random positioning signal sequence of the pseudolite according to the pseudolite array and the positioning correction information. The terminal further matches the received positioning signal according to the random positioning signal sequence to obtain the arrival time of the positioning signal and obtain through calculation the position coordinates of the terminal according to the position coordinates of the pseudolite and the arrival time.
Thu, 27 Oct 2016 08:00:00 EDTAn object recognition device includes a camera (113) and a radar (114), detects an estimated plane region estimated to be a plane from an image from the camera (113) (S202), and calculates a plane equation for the estimated plane region (S207). The object recognition device interpolates and estimates distance data within the estimated plane region based on the plane equation and the measured distance data from the radar (S210) and obtains the distance to an object by using the distance data. Accordingly, it is possible to obtain dense distance data throughout the estimated plane region and to detect the distance to small objects and distant objects.
Thu, 27 Oct 2016 08:00:00 EDTA monitoring system, a monitoring apparatus, and a monitoring method thereof are provided. In particular, the monitoring system includes a handheld electronic apparatus and a monitoring apparatus. The monitoring apparatus is wirelessly connected to the handheld electronic apparatus. The monitoring apparatus includes a radar, an image capture unit, and a processing unit. The radar generates an electromagnetic wave and receives a reflected wave of the electromagnetic wave. The image capture unit is configured to capture a plurality of image. The processing unit generates a status information according to the reflected wave of the electromagnetic wave and the image, and wirelessly transmits the status information to the handheld electronic apparatus. The handheld electronic apparatus triggers a function according to the status information.
Thu, 27 Oct 2016 08:00:00 EDTIn a method of determining a deviation of a path of a projectile from a predetermined path, the method uses an image of a target area in which the desired path or direction is pointed out. Subsequently, the real direction or real path is determined and the deviation is determined.
Thu, 27 Oct 2016 08:00:00 EDTWaste water flow quantifying apparatus, a method and a computer program is provided. The waste water flow quantifying apparatus comprises microwave transceiver circuitry configured to transmit a first microwave signal into a closed conduit and configured to receive a first superposition microwave signal formed from a combination of the first microwave signal and a reflection, from within the closed conduit, of the first microwave signal. The microwave transceiver circuitry is configured to transmit a second microwave signal into the closed conduit. The second microwave signal has a different frequency from the first microwave signal or is out of phase with the first microwave signal. The microwave transceiver circuitry is configured to receive a second superposition microwave signal formed from a combination of the second microwave signal and a reflection, from within the closed conduit, of the second microwave signal. The microwave transceiver circuitry is configured to transmit a third microwave signal into the closed conduit. The third microwave signal has a different frequency from the first microwave signal or is out of phase with the first microwave signal. The third microwave signal has a different frequency from the second microwave signal or is out of phase with the second microwave signal. The microwave transceiver circuitry is configured to receive a third superposition microwave signal formed from a combination of the third microwave signal and a reflection, from within the closed conduit, of the third microwave signal. The waste water flow quantifying apparatus further comprises processing circuitry configured to quantify waste water flow through the closed conduit using a reading of the first superposition microwave signal, a reading of the second superposition microwave signal and a reading of the third superposition microwave signal provided by the microwave transceiver circuitry.
Thu, 27 Oct 2016 08:00:00 EDTAn electronic tracking system for obtaining geographic or other information about a targeted object from deployed ordnance. Ordnance can be delivered from any suitable weapon or weapons system, including hand-held or artillery guns, manned or unmanned aircraft, etc. The ordnance can be substantially any projectile targeted at a human, animal or other object. Once deployed, the ordnance can provide a variety of information about location, the target, the shooter, or the ordnance itself. Such information can be transmitted at any suitable interval, even time-delayed or upon a condition. Preferably, the system also contains a receiver to receive the transmitted information. Once received, the information can be then provided to users in any appropriate fashion.
Thu, 27 Oct 2016 08:00:00 EDTA radar system with frequency scanning beam steering is described for in-vehicle occupant detection and classification for seat-belt reminder functionality (SBR) and airbag suppression. The system includes an antenna system for which the main lobe direction (azimuth angle ö) is changing mostly linearly over frequency, a RF electronic transceiver electronic with at least one transmit channel and one or multiple receive channels with two outputs (I/Q) per channel. The data acquisition and signal processing/interpretation are made by a microcontroller system.
Thu, 20 Oct 2016 08:00:00 EDTA radio communication apparatus includes an estimating unit that estimates directions of arrival of signals transmitted by a plurality of respective users, a calculating unit that calculates a map as a trigonometric function of an angle representing each of the directions of arrival estimated by the estimating unit, a grouping unit that groups the users based on the maps calculated by the calculating unit, and a determining unit that determines a weight coefficient for forming a directional beam steered to a user belonging to a group, for each group resultant of grouping performed by the grouping unit.
Thu, 20 Oct 2016 08:00:00 EDTTo increase efficiency of optical control of phase shifting elements, arrangements comprising optical lenses are presented. The optical lenses may be arranged in reflective arrays so as to focus light from a light source on a phase shifting element, which may be placed in a feed point of an antenna, such as for example a lithographic antenna. In some embodiments, thus both optical controlling radiation and radio frequency, RF, power are concentrated in substantially the same place.
Thu, 20 Oct 2016 08:00:00 EDTVarious embodiments of a millimeter-wave wireless point-to-point or point-to-multipoint communication system which enables determining preferred directions of transmissions, and transmitting in such preferred directions without routing radio-frequency signals. The system comprises a millimeter-wave focusing element, multiple millimeter-wave antennas, and multiple radio-frequency-integrated circuits (“RFICs”). In various embodiments, preferred directions are determined, and millimeter-wave beams are transmitted in the preferred directions.
Thu, 20 Oct 2016 08:00:00 EDTA selective intrusion detection system includes a Doppler transceiver configured and adapted to receive Doppler return signals indicative of moving targets present in a surveillance space. A processor is operatively connected to the Doppler transceiver to convert Doppler return signals into spectrograms and to determine whether any given spectrogram is indicative of presence of a human or another moving target, like a domestic pet. An alarm is operatively connected to the processor, wherein the processor and alarm are configured to provide an alert in the event the processor determines any given spectrogram is indicative of a human, and to forego providing an alert in the event the processor determines any given spectrogram is indicative of another moving target only.
Thu, 20 Oct 2016 08:00:00 EDTThe invention relates to the field of seismology and volcanology, especially the monitoring of the sites in question, called “unstable sites”, and more specifically the monitoring of a fault on such a site. In this respect, the invention especially relates to a reflective assembly to be arranged on a monitored site, the site being monitored from an observation point from which an electromagnetic wave is directed towards the reflective assembly. The invention also relates to a method for monitoring a site by means of such a reflective assembly.
Thu, 20 Oct 2016 08:00:00 EDTA method for detecting underground natural resources using synthetic aperture radar includes providing a ground-penetrating phase-coherent radar system incorporating a moving platform; sending a plurality of radar signals from a plurality of points along a plurality of paths through an underground volume, the plurality of radar signals producing a plurality of radar returns; collecting the plurality of radar returns along the plurality of paths with the ground-penetrating phase-coherent radar system; coherently processing the plurality of radar returns with a processing circuit to determine a characteristic of a sub-surface feature; retrieving information relating to a reference underground volume from a memory; and identifying a potential sub-surface resource by using the processing circuit to compare the characteristic of the sub-surface feature with the information relating to the reference underground volume.
Thu, 20 Oct 2016 08:00:00 EDTA terminal receives a GPS signal and a GPS correction signal, and a first elevation value calculation unit calculates an elevation value from the GPS signal and the GPS correction signal. The terminal includes an atmospheric pressure information detection unit that detects ambient atmospheric pressure information, and a second elevation value calculation unit for calculating an elevation value from the atmospheric pressure information. If a GPS correction signal can be received, the elevation value calculated by the first elevation value calculation unit is used as the elevation value of the current position and the calculated elevation value is used to calibrate the second elevation value calculation unit. If a GPS correction signal cannot be received, the elevation value calculated by the calibrated second elevation value calculation unit is used as the elevation value of the current position to acquire an accurate elevation value even when inside a building or tunnel.
Thu, 20 Oct 2016 08:00:00 EDTAn electronic device includes a first positioning-information acquiring module, a second positioning-information acquiring module, and a switching control unit. The first positioning-information acquiring module acquires positioning information based on a first positioning system which is GPS. The second positioning-information acquiring module acquires positioning information based on a second positioning system which is GLONASS. The switching control unit determines the reception state of at least one of positioning information based on the first positioning system and positioning information based on the second positioning system. Based on this determination result, the switching control unit sets any one of positioning based on any one of the first positioning system and the second positioning system and positioning based on both of the first positioning system and the second positioning system.
Thu, 20 Oct 2016 08:00:00 EDTA receiver (100) is provided for signals of different signal strengths and modulated with respective pseudorandom noise (PN) codes. The receiver (100) includes a correlator circuit (120) operable to correlate the signals with a selectable locally-issued PN code having a Doppler and a code lag to produce a peak, the correlator circuit (120) being subject to cross correlation with a distinct PN code carried by least one of the signals that can produce cross correlation; and a cross correlation circuit (370, 400) operable to generate a variable comparison value related to the cross correlation as a function of values representing a Doppler difference and a code lag difference between the locally-issued PN code and the distinct PN code, and to use the variable comparison value to reject the peak as invalid from cross correlation or to pass the peak as a valid received peak.
Thu, 20 Oct 2016 08:00:00 EDTA device for transmitting synchronized timing including a receiver, a transmitter, one or more processors, memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the programs including instructions for receiving through the receiver a timing signal comprising first time information that is synchronized to a time standard, determining second time information based at least partially on the first time information, composing a message formatted in accordance with a global navigation satellite system (GNSS) standard, wherein the message comprises the second time information, and transmitting the message through the transmitter on a radio signal having a frequency in the frequency modulation (FM) radio frequency band.
Thu, 20 Oct 2016 08:00:00 EDTA Ground-Based Augmentation System (GBAS) includes a plurality of Global Navigation Satellite System (GNSS) reference receivers configured to receive and process GNSS satellite measurements. The GBAS further includes at least one processing module communicatively coupled to the plurality of GNSS reference receivers, configured to: determine a respective ionosphere quality metric along lines of sight for of observable GNSS satellites using code minus carrier measurements from the observable GNSS satellites; define one or more valid ionosphere regions where at least one respective ionosphere quality metric meets a threshold; determine which of the observable GNSS satellites have an ionosphere pierce point within the one or more valid ionosphere regions; and output at least one overbounded Vertical Ionosphere Gradient standard deviation (σvig) corresponding to the one or more valid ionosphere regions and an indication of which observable GNSS satellites have an ionosphere pierce point within the one or more valid ionosphere regions.
Thu, 20 Oct 2016 08:00:00 EDTSystems and methods are disclosed to determine an unambiguous radial velocity for weather phenomena using weather radar that is not limited by the Doppler Dilemma. Some embodiments include transmitting a complex waveform and using the returned electromagnetic signal to determine the unambiguous radial velocity.
Thu, 20 Oct 2016 08:00:00 EDTIn a method for determining a position of at least two sensors in relation to one another, a moving object is sensed by the at least two sensors, and at least one movement variable for the moving object is determined by one of the sensors, at least said movement variable or variables derived therefrom being used jointly for determining a position of the sensors in relation to one another. The sensor network is designed to carry out a method of said kind.
Thu, 20 Oct 2016 08:00:00 EDTSystems and methods to reduce parallax errors are provided for an antenna array having a boresight optical system. In an example embodiment, a method comprises constructing an antenna array having antenna elements disposed symmetrically around an antenna axis and providing an optical aperture in the antenna array. An optical instrument having an optical axis is arranged in or adjacent the optical aperture. A first portion of the antenna elements receives reflected signals from a target in flight. A second portion of the antenna elements receives reflected signals from the same target in flight. A direction of travel of the target is calculated based on an average of the respective signals received by the first and second portions of the antenna elements.
Thu, 20 Oct 2016 08:00:00 EDTSystems, methods and media to track a golf ball to and on a green are provided. In an example embodiment, a method comprises arranging golf ball tracking components including a 3-D tracking Doppler radar, and at least one camera adjacent the green, and connecting a processor with signal sampling capability to the tracking components. The positions and orientations of the tracking components relative to a location in the green, for example the pin hole, are entered into the processor. In one example, microphones are provided. The tracking radar detects a golf ball approaching the green and the microphones detect the landing. The processor calculates the landing position of the ball based on signals received from the radar, the microphones, or the at least one camera. The camera records images of the ball on the green and the processor processes the images of the ball to construct a composite difference image of ball positions and movement on the green, and uses the composite difference image to determine a final position of the ball on the green.
Thu, 20 Oct 2016 08:00:00 EDTSystems, methods and media are provided for golf ball spin axis measurement. In one example, a method comprises detecting a launched golf ball, receiving reflected Doppler signals from the golf ball by a radar device having an array of multiple receiver pairs, demodulating the spin-induced signals from the received signals, determining a time delay between the demodulated signals for the receiver pairs in the array, calculating an average time delay for the multiple receiver pairs, calculating a spin axis of the golf ball from the time delay values, outputting a spin axis value to an external system, and storing the spin axis value in a database.
Thu, 20 Oct 2016 08:00:00 EDTIn accordance with an embodiment, a packaged radio frequency (RF) circuit includes a radio frequency integrated circuit (RFIC) disposed on a substrate that has plurality of receiver circuits coupled to receive ports at a first edge of the RFIC, and a first transmit circuit coupled to a first transmit port at a second edge of the RFIC. The packaged RF circuit also includes a receive antenna system disposed on the package substrate adjacent to the first edge of the RFIC and a first transmit antenna disposed on the package substrate adjacent to the second edge of the RFIC and electrically coupled to the first transmit port of the RFIC. The receive antenna system includes a plurality of receive antenna elements that are each electrically coupled to a corresponding receive port.
Thu, 20 Oct 2016 08:00:00 EDTA sensor for detecting a parking space includes a modulating module for supplying a sinusoid wave having a modulation frequency, an active antenna module transmits a FMCW signal based on the modulation frequency and for receiving a reflected FMCW signal, a intermediate-frequency filter for extracting a first demodulating signal having the modulation frequency from the reflected FMCW signal generating modulation signal, a second intermediate-frequency filter for extracting a second demodulating signal having a multiplying frequency of the modulation frequency, an integrator for performing integral operation for the second demodulating signal to generate an integral voltage, a triggering circuit for generating a triggering voltage when the integral voltage is greater than a reference voltage, and a controller for performing operations relating to an existence of a vehicle when receiving the triggering voltage.
Thu, 20 Oct 2016 08:00:00 EDTA technique is provided for estimating time of arrival of a signal transmitted as a pulse and received as a sum of pulses. The received signal is filtered with a novel filter that lowers the early side lobes of the received signal to noise level. A first energy rise point is identified at a point of the main lobe of the filtered received signal, at which the energy is higher than the noise by a predetermined level. Starting from the identification of the first energy rise points, the time of arrival is estimated via curve matching, in which the shape of the filtered received signal is matched to the shape of composed by a sum of one or more reference curves that are shifted both in time and in energy. The reference curves are found by applying to the transmitted signal the same filter applied to the received signal.
Thu, 20 Oct 2016 08:00:00 EDTObject tracking anti-jitter filtering systems and methods. A plurality of raw location points for a tracking tag attached to a tracked object is received. The raw location points are stored within a raw location points buffer. Raw location points within an averaging window are averaged to generate an averaged location point. The averaged location point is stored within an averaged location points buffer for use within the object tracking system.
Thu, 20 Oct 2016 08:00:00 EDTThe present invention relates to a method of determining the indoor position of a mobile computing device using the signal strength measurements of a plurality of electromagnetic signals which are emitted from fixed locations. By using a heuristic which takes the observed behavior of signal strength measuring devices into account, the method allows to increase the accuracy and robustness of similar known methods.
Thu, 13 Oct 2016 08:00:00 EDTA radio frequency (RF) noise reduction system is disclosed to include a first antenna for receiving a RF signal, a phase shifter coupled to the first antenna for generating a phase shifted RF signal, and an amplitude detector coupled to the first antenna for outputting a signal representative of an amplitude of the RF signal. Additionally, the RF noise reduction system includes a microcontroller coupled to the amplitude detector for controlling the phase shifter. Still yet, the RF noise reduction system includes a second antenna coupled to the phase shifter and being configured to transmit the phase shifted RF signal.
Thu, 13 Oct 2016 08:00:00 EDTAn array antenna device according to an embodiment has a first sub-array antenna and a second sub-array antenna, a driver, and a feeder. The first sub-array antenna and the second sub-array antenna have a plurality of radiating elements arranged in a reference plane. The driver, by changing the orientation of at least one of the first sub-array antenna and the second sub-array antenna, causes the normal lines of the reference planes of the first sub-array antenna and the second sub-array antenna to intersect. The feeder performs in-phase power feed to the first sub-array antenna and the second sub-array antenna, and performs opposite-phase power feed to the first sub-array antenna and the second sub-array antenna.
Thu, 13 Oct 2016 08:00:00 EDTThe present invention extends to methods, systems, and computer program products for detecting targets across beams at roadway intersections. Embodiments of the invention include tracking a target across a plurality of beams of a multiple beam radar system in a roadway intersection and updating track files for targets within a roadway intersection. Returns from a plurality of radar beams monitoring a roadway intersection are divided into range bins. Identified energy in the range bins is used to compute the position of targets within a roadway intersection. When the position of a target is computed, it is determined if the position is a new position for an existing target or if the position is the position of a new target.
Thu, 13 Oct 2016 08:00:00 EDTA universal multi-channel receiver for receiving and processing signals from different navigation systems is provided. The universal receiver is implemented as an ASIC receiver with a number of universal channels. The receiver with universal channels is capable of receiving and processing signals from navigation satellites located within a direct access zone. The universal receiver has a plurality of channels that share the same memory. The universal receiver can determine its coordinates using all existing navigation systems (GPS, GLONASS and GALILEO). The universal receiver can receive and process any (PN) signals used for various purposes.
Thu, 13 Oct 2016 08:00:00 EDTEmbodiments are disclosed to calculate and store rock climbing navigational data using a rock climbing watch including a sensor array configured to measure an orientation of the rock climbing watch and a processor configured to calculate an angle between two rock face locations along a rock climbing route based upon an orientation of the rock climbing watch when it is pointed from a current rock face location towards another rock face location. A processor may determine route segments for traversing the rock climbing route. A processor may convert route climbing navigational data into a three-dimensional wireframe rock climbing navigational map including rock face locations, calculated distances and angles between rock face locations, and a rock climbing route. The rock climbing watch may present information to guide the user along a rock climbing route by displaying a graphical directional indicator and a distance to the next rock face location.
Thu, 13 Oct 2016 08:00:00 EDTThe apparatus of the present invention provides onboard detection systems such as automotive radars the ability to react to difficult aspect ratio targets at an off angle to the road greatly increasing the ability of the operator of a vehicle to avoid a collision. The apparatus of the present invention is co-located with the difficult aspect ratio target, either as a mounted device or as an item worn by a person. The apparatus of the present invention is active in that when an incoming radar signal impinges on the apparatus a return signal is sent that contains information identifying the target thereby eliminating the problem of signal ambiguity. Advantageously, the apparatus of the present invention can be adapted to a number of mounting schemes. Examples include mounting the apparatus to the frame of a bicycle, the fender of a motorized mobility device, imbedded into a motorized mobility device, imbedded into a wearable electronic device or attached to the clothing of a cyclist or pedestrian.
Thu, 13 Oct 2016 08:00:00 EDTA system and method for tracking an object receive electronic intelligence (ELINT) track information related to the object and radar track information. A first likelihood that the radar track information is also related to the object is determined at a first time of the ELINT track information and a first time of the radar track information. A second likelihood that the radar track information is also related to the object is determined at a second time of the ELINT track information and a second time of the radar track information. The first likelihood and the second likelihood are processed to determine whether the ELINT track information and the radar track information should be associated as both being related to the object.
Thu, 13 Oct 2016 08:00:00 EDTA radar device including an ADC that performs slide sampling on frequency difference signals outputted from a mixer, and classifies sampling data about the frequency difference signals according to range bins based on a distance resolution corresponding to a pulse width set by a controller, and a speed discrimination unit that separates the sampling data about each range bin after being classified by the ADC according to relative speeds of objects. A distance and speed measurement unit calculates the distance to and the relative speed of an object which has reflected a transmission pulse by using the sampling data after being separated according to relative speeds by the speed discrimination unit.
Thu, 13 Oct 2016 08:00:00 EDTDisclosed herein is an installation angle distinction apparatus including at least: an Input unit which inputs a current relative distance value, current relative velocity value and current horizontal angle value of a stationary object; an estimation unit which estimates a vertical height of the stationary object, and estimates vertical height values of the stationary object at each of predetermined time points for different distances and estimates a current vertical installation angle value of the detector; a determination unit which determinates that the current vertical installation angle of the detector is abnormal when the estimated current vertical installation angle value is deviated from a reference vertical installation angle value range preset; and a control unit which receives the current relative distance value, the current relative velocity value, and the current horizontal angle value, transmits an estimation command and a determination command to the estimation unit the determination unit, respectively.
Thu, 13 Oct 2016 08:00:00 EDTIn an axial misalignment determination apparatus mounted on a mobile object, a misalignment determiner performs axial misalignment determination processing to determine whether or not a reference axis of a transceiver for transmitting and receiving probe waves and a mounting reference axis of the mobile object coincide in direction. A necessity determiner determines whether or not a condition for performing the axial misalignment determination processing is met, and if the condition is met, determines that there is a need to perform the axial misalignment determination processing. The condition is predefined based on an extrapolation result of an extrapolator for extrapolating a target and a determination result of a deposit determiner for determining the presence or absence of a deposit on an object. If it is determined by the necessity determiner that there is a need to perform the axial misalignment determination processing, the misalignment determiner performs the axial misalignment determination processing.
Thu, 13 Oct 2016 08:00:00 EDTA method for determining the complex impedance between a first stage and a second stage in a microwave system includes detecting an incident signal emitted by the first stage and detecting a reflected signal reflected from the second stage. The magnitudes of the incident signal and the reflected signal are measured. The detected incident signal is phase shifted by a first angle to yield a first incident signal and the detected reflected signal is phase shifted by the first angle to yield a first reflected signal. The detected incident signal and the first incident signal are mixed with the detected reflected signal and the first reflected signal. The angle of the reflection coefficient is determined based on the mixing and the magnitudes of the incident signal and the reflected signals.
Thu, 13 Oct 2016 08:00:00 EDTA direct geolocation approach for estimating a location of a stationary emitter located on the Earth surface is provided. The approach uses data collected during a plurality of time periods including Time Difference of Arrival (TDOA) and Frequency Difference of Arrival (FDOA) measurements of a radar pulse sent from the emitter, and altitude measurements of an aircraft above the Earth surface. The approach includes estimating a location of the emitter for each of the time periods based on the TDOA, FDOA, and altitude measurements associated with a respective time period. The estimated location of the stationary emitter includes possible longitude and latitude of the emitter. The approach further includes averaging the estimated locations associated with the plurality of time periods to form an averaged estimated location of the emitter. A convenient example of the approach computes the location of the emitter based on the averaged estimated location.
Thu, 13 Oct 2016 08:00:00 EDTThis method implemented by a mobile device for obtaining its position comprises the steps of: a. determining a current set of possible positions of the mobile device from a measure of the distance between the mobile device and an anchor device at a current instant t0;b. determining a subsequent set of possible positions at a subsequent instant t1 from the current set of possible positions and from a vector of movement of the mobile device at the instant t0;c. estimating the distance between the mobile device and the anchor device at the subsequent instant t1;d. obtaining a new current set of possible positions of the mobile device by selecting within the subsequent set of possible positions those which are, from the anchor device, at the distance estimated at the estimating step c.; repeating steps b. to d. until the new current set of possible positions comprises only one element and estimating that the position of the mobile device is this only one element.
Thu, 06 Oct 2016 08:00:00 EDTModulation apparatus, comprising: a first delta-sigma modulator for providing a digital in-phase signal based on a modulation of an in-phase component of a baseband signal; a second delta-sigma modulator for providing a digital quadrature signal based on a modulation of a quadrature component of the baseband signal; a first multiplicative combiner for combining a carrier signal with the digital in-phase signal and for providing an in-phase output signal; a second multiplicative combiner for combining the carrier signal with the digital quadrature signal and for providing a quadrature output signal; a delay component for generating a 90° phase shift between the in-phase output signal and the quadrature output signal; and an additive output combiner for combining the in-phase output signal and the quadrature output signal and generating a transmit signal.
Thu, 06 Oct 2016 08:00:00 EDTThe present invention comprises: a reference-signal generation circuit 5 that performs a reference-signal generation process on a first input signal and outputs a resulting first reference signal and a resulting second reference signal proportional to the first input signal; a coefficient-signal synthesis circuit 6 that performs a coefficient-signal synthesis process on the first reference signal and a second input signal containing at least a frequency component contained in the first input signal, and outputs a resulting coefficient signal; a transfer-signal production circuit 7 that performs a desired frequency-selection control process on the second reference signal and outputs a resulting transfer signal; and a transfer-signal synthesis circuit 9 that performs a transfer-signal synthesis process on the coefficient signal and the transfer signal and outputs a resulting signal to an output terminal.
Thu, 06 Oct 2016 08:00:00 EDTA low complexity/cost beamsteering antenna includes a central line feed affixed to a radial waveguide structure, radiating elements positioned along the circumference of the radial waveguide structure, and a plurality of active elements interspersed along the surface of the radial waveguide structure between the central line feed and the radiating elements. The active elements may comprise PIN diodes or microelectromechanical system (MEMS) components, and may be selectively activated/deactivated by DC switches in order to direct the propagation of an RF signal over the radial waveguide structure in a manner similar to a power divider. As a result, the RF signal may be funneled to selected radiating elements, thereby effectively directionally aiming the main lobe of the emitted radiation pattern to beamsteer the wireless transmission.
Thu, 06 Oct 2016 08:00:00 EDTThe invention which is mobile number plate recognition and speed detection apparatus (1) placed on the vehicles, i.e., police vehicle, with the aim of security, characterized in comprising camera (1.3) which is placed at two sides of the base—front right and front left—and enables the apparatus to capture image; LED lightings (1.4) which are disposed around the cameras (1.3) and face the direction of vision and provide capturing recognizable image at nights; police lights (1.5) which are placed to the front and rear surfaces of said base (1.2) and flash when necessary; alarm control device (1.8) adjusting the alarm; Ethernet connection (1.9) constituting the network; cooling device (1.10) eliminating the heat inside the apparatus; control card (1.11) controlling the police lights; 3G modem (1.12) providing wireless connection constantly; and upper cover (1.1) covering the entire apparatus by surrounding it.
Thu, 06 Oct 2016 08:00:00 EDTA method for enhancing video display of a video surveillance system, comprises: a. receiving a first video image In−1 and a second video image In corresponding to a previous scan n−1 and a current scan n of the video surveillance system, b. determining a backwards displacement vector Dn from image In associating with scan n to image In−1 associated with scan n−1; c. determining a predicted image Jn+1 for scan n+1 based on the backward displacement vector Dn and on the image In corresponding to the current scan n. The method further comprises displaying an image based on the predicted image.