Thu, 25 Aug 2016 08:00:00 EDTEmbodiments are directed to operating an analog signal processing circuit to emulate a Rotman lens. The analog signal processing circuit applies a plurality of time delays to a plurality of signals associated with a plurality of beam ports. The analog signal processing circuit forms a plurality of output beams for transmission by a plurality of array ports included in an array based on the time delayed signals by summing the time delayed signals. The time delays are based on a direction of transmission of the output beams.
Thu, 25 Aug 2016 08:00:00 EDTThe present invention relates to a multi-band antenna, which comprises: a first antenna array of a first band configured by a radiation module of the first band; a (2-1)th antenna array of a common band between a second band and third band, the (2-1)th antenna array including radiation modules for the common band between the second band and third band; a (2-1)th phase shifter for receiving an input signal of the second band, distributing signals having phase difference therebetween to pre-configured radiation modules or groups of multiple radiation modules among the radiation modules of the (2-1)th antenna array, respectively, and then providing the signals; a (3-1)th phase shifter for receiving an input signal of the second band, distributing signals having phase difference therebetween to pre-configured radiation modules or groups of multiple radiation modules among the radiation modules of (2-1)th antenna array, respectively, and then providing the signals; a plurality of (2-1)th frequency combiners for combining one pre-configured signal among output signals of the (2-1)th phase shifter with one corresponding signal among output signals of the (3-1)th phase shifter, and providing a combined signal to each pre-configured radiation module among the radiation modules of the (2-1)th antenna array or a pre-configured group among groups of multiple radiation modules among the radiation modules of the (2-1)th antenna array.
Thu, 25 Aug 2016 08:00:00 EDTA phased array antenna system including a front-end circuit having a plurality of antenna channels, each including a front antenna element and a rear antenna element, that provides a spatially combined beam. Each antenna channel includes a beam scan phase shifter and a true time delay phase shifter through which the receive signals or the transmit signals propagate. The system further includes a back-end circuit spaced from the front-end circuit and including an antenna receiving the receive signals from the rear elements or transmitting the transmit signals to the rear elements. The back-end circuit further includes an ortho-mode transducer that separates the transmit signal or the receive signal into orthogonally polarized signals, and a pair of couplers and a pair of polarization phase shifters that combine to adjust the polarization of the transmit signal or the receive signal. The spatially combined beam is reconfigurable in beam shape and its location.
Thu, 25 Aug 2016 08:00:00 EDTThe present invention provides a base station antenna, including power dividers, network calibration modules, and connectors. The base station antenna further includes at least two phase shifters. At least one phase shifter is integrated with a combiner, the connectors are connected to the network calibration modules, and the network calibration modules are connected to the phase shifters. The one phase shifter integrated with the combiner is connected to the power divider, and at least one output port of the at least one other phase shifter is connected to the phase shifter integrated with the combiner. The base station antenna has an integrated design of phase shifters and combiners, which allows cables in different bands to be shared, reduces a quantity of used cables, is easy to implement in an actual layout and production, facilitates the layout and heat dissipation on the whole, satisfies user requirements, and reduces costs.
Thu, 25 Aug 2016 08:00:00 EDTPolynomial regression models are used to reduce errors in measurements of pseudorange between a GNSS satellite and a receiving station; for data compression by replacing a large number of measurements with a small number of coefficients of the model polynomial, optionally combined with modeling residuals; for extrapolating usefully accurate estimates of future range between the GNSS satellite and the receiving station; and for providing usefully accurate estimates of future coefficient values of the polynomial regression models themselves.
Thu, 25 Aug 2016 08:00:00 EDTAn electronic apparatus includes a controller that intermittently drives a receiver in a predetermined cycle, the receiver receiving a positioning signal to generate predetermined information, and the controller determines an upper limit of a period to be spent for the generation of the predetermined information on the basis of a period spent for the generation in the past.
Thu, 25 Aug 2016 08:00:00 EDTAn electronic apparatus includes a controller that determines a cycle of intermittent driving of a receiver that receives a positioning signal to generate predetermined information on the basis of a period having been spent to generate the information.
Thu, 25 Aug 2016 08:00:00 EDTAn electronic device includes an acceleration sensor for detecting an acceleration, a GPS receiver for receiving a GPS signal, and a controller for determining a type of a stop state or of a moving state based on the acceleration detected by the acceleration sensor and changing a reception period of the GPS signal received by the GPS receiver based on a result of determination.
Thu, 25 Aug 2016 08:00:00 EDTThe disclosed global navigation satellite system (GNSS) devices and methods group GNSS satellite signals from different GNSS constellations, as well as other signals of interest, into sub-bands, also called ‘superbands’, by signal frequency for analog filtering and processing, and then further divides each superband for additional processing in the digital domain. Each superband is a frequency range that can include GNSS satellite signals from one, two, three, or more than three, GNSS constellations. Using multiple parallel processing channels allows multiple signal frequency bands that cover a wide bandwidth to be divided into narrower superbands for processing, which increases the processing abilities within the superbands and allows out-of-band interference between superbands to be eliminated. Thus the GNSS satellite signals are divided for processing according to frequency, not according to the originating GNSS satellite constellation.
Thu, 25 Aug 2016 08:00:00 EDTExamples disclosed herein may relate to electronic devices, and more particularly to methods, apparatuses and articles of manufacture for use in a mobile device having one or more onboard sensors and a wireless signal based positioning capability.
Thu, 25 Aug 2016 08:00:00 EDTMethods and apparatus to monitor GPS/GNSS atomic clocks are disclosed. An example method includes establishing a measured difference between an atomic frequency standard (AFS) and a monitoring device. The method also includes modeling an estimated difference model between the AFS and the monitoring device, and computing a residual signal based on the measured difference and the estimated difference model. In addition, the method includes analyzing, by a first detector, the residual signal at multiple thresholds, each of the thresholds having a corresponding persistency defining the number of times a threshold is exceeded before one or more of a phase jump, a rate jump, or an acceleration error is indicated. Furthermore, the method includes analyzing, by a second detector, a parameter of the estimated difference model at multiple thresholds, each of the thresholds having a corresponding persistency defining the number of times a drift threshold is exceeded before a drift is indicated.
Thu, 25 Aug 2016 08:00:00 EDTA K-band frequency modulated continuous wave (FMCW) weather radar system is provided for measuring precipitation in the atmosphere. The apparatus includes a RF transmitter which modulates the input signal of the first baseband unit, this transmitted baseband signal is scattered by the target. A RF receiver receives the signal and demodulates that signal. Further, this demodulated signal goes to mixer and is mixed with local oscillator to generate beat frequency. An IF (intermediate frequency) signal of K-band FMCW radar can be treated as time and frequency domain signals due to a unique property of linear frequency modulation (LFM). Frequency synthesizer generates a reference signal for coherent operation of overall FMCW radar system. The second baseband unit down-converts the beat signal and generates I/Q signal. Finally the signal is converted into digital form utilizing analog-to-digital converter.
Thu, 25 Aug 2016 08:00:00 EDTA passive radiometric system for thermally imaging objects in a scene. The system includes a digital square-law quantizer circuit including a plurality of comparators and a voltage divider network having a plurality of resistors. Each comparator receives a different reference signal generated by the voltage divider network and a common power signal from an antenna and outputs a high or low digital bit signal. The system also includes a delta-sigma circuit having a weighting table responsive to the digital bit signals from the comparators that converts the digital bit signals to a normalized bit word. The delta-sigma circuit also includes an accumulator that receives the digital bit words from the weighting table and provides an average of the digital bit words. The system also includes a digital-to-analog converter that converts the averaged bit words to an analog signal that is provided as a feedback signal to the quantizer circuit.
Thu, 25 Aug 2016 08:00:00 EDTA set of radar data is organized as a two dimensional (2D) array with multiple lines of data. A 2D cross point analysis is performed on each set of data to detect objects in range of the radar system. A set of candidate objects is identified by performing an initial one dimensional (1D) analysis on a line of data along a first axis of the set if data to determine a candidate location of each candidate object along the first axis; however, the set of candidate objects may include false objects. The set of candidate objects is pruned by performing a cross 1D analysis of the data along a second axis of the set of data at a position corresponding to each candidate location along the first axis to select a set of most likely candidate objects from the set of candidate objects.
Thu, 25 Aug 2016 08:00:00 EDTA distance measuring apparatus and method for calculating a distance in a conducting structure are provided. One distance measuring apparatus provides for calculating a distance between a reflection body in a conducting structure and an injection point provided on an end section of the conducting structure for electromagnetic waves is provided. The distance measuring apparatus includes a transmitting and receiving device with a conduction cross-over provided at the injection point for the coaxially-inductive coupling of the transmitting and receiving device to the conducting structure in order to inject an electromagnetic wave into the conducting structure and to decouple the electromagnetic wave reflected on the reflection body from the conducting structure. The distance measuring apparatus also includes an analysis device for calculating a distance between the injection point and the reflection body from the phase difference between the injected electromagnetic wave and the decoupled electromagnetic wave.
Thu, 25 Aug 2016 08:00:00 EDTA frequency-modulated continuous-wave (FMCW) radar system for level or distance measurement in which a frequency modulated signal to be transmitted to a target is mixed with an echo signal from the target to produce a beat signal that passes through an analog filter before being digitized and processed in a digital processor to determine the level or distance to be measured, where a test signal is generated by a signal generator, and a switch is controlled to connect the beat signal or the test signal to the analog filter, the signal generator generates the test signal as a broadband signal having a periodic waveform, e.g., a square wave, and the digital processor calculates a spectrum of the digitized filtered test signal by Fast Fourier Transform and generates a fault signal if the spectrum differs from a reference spectrum by a predetermined amount to allow for failure detection.
Thu, 25 Aug 2016 08:00:00 EDTA radar apparatus is provided. The radar apparatus includes a transmission and reception unit configured to transmit a close distance pulse signal, a medium distance pulse signal, and a far distance pulse signal in an order of the close distance pulse signal, the far distance pulse signal, the medium distance pulse signal, and then the far distance pulse signal, and receive reflection waves of the transmitted pulse signals, the far distance pulse signal having a wider pulse width than the close distance pulse signal, the medium distance pulse signal having a pulse width wider than the close distance pulse signal and narrower than the far distance pulse signal, and a signal processor configured to generate a radar image by using a first detection result and a second detection result.
Thu, 25 Aug 2016 08:00:00 EDTA system for providing integrated detection and countermeasures against unmanned aerial vehicles include a detecting element, an location determining element and an interdiction element. The detecting element detects an unmanned aerial vehicle in flight in the region of, or approaching, a property, place, event or very important person. The location determining element determines the exact location of the unmanned aerial vehicle. The interdiction element can either direct the unmanned aerial vehicle away from the property, place, event or very important person in a non-destructive manner, or can cause disable the unmanned aerial vehicle in a destructive manner.
Thu, 25 Aug 2016 08:00:00 EDTAn ultra-wideband transceiver includes: one antenna for transmitting a first ultra-wideband signal at time 1 and receiving a second ultra-wideband signal at time 2; a transfer unit that transfers the first ultra-wideband signal from a first node to the antenna or transfers the second ultra-wideband signal received by the antenna to the first node, based on characteristics of an input signal; and a first buffer that generates a first pulse signal for the first ultra-wideband signal and outputs the same to the first node at time 1.
Thu, 25 Aug 2016 08:00:00 EDTA testing device for testing a radar device. The testing device may be configured to determine a first frequency difference between a frequency of a first signal or a second signal and a frequency of a third signal based on a first distance value; transmit to the radar device the first signal; receive the second signal from the radar device; transmit to the radar device the third signal at an offset relative to at least one of the first signal and the second signal based on the first frequency difference; and receive from the radar device a fourth signal indicating a second distance value or a second frequency difference between the frequency of the second signal and the frequency of the third signal, determined by the radar device, for comparison with the first distance value or the first frequency difference.
Thu, 25 Aug 2016 08:00:00 EDTA cascaded radar sensor arrangement is disclosed. The arrangement includes a first buffer and a second buffer. The first buffer is within a first radar chip and includes a switch and is configured to mitigate a first leakage signal in the disabled mode. The second buffer is within a second radar chip and has a disabled mode. The second radar chip is cascaded with the first radar chip. A control unit is coupled to the first radar chip and the second radar chip and is configured to set the disabled mode for the first buffer.
Thu, 25 Aug 2016 08:00:00 EDTAn example disclosed method includes defining a first zone within a monitored area, a first group of receivers covering the first zone; defining a second zone within the monitored area, a second group of receivers covering the second zone; determining, via a processor, a first position of a first tag based on timing measurements obtained via the first group of receivers; determining, via the processor, whether the first position indicates that the first tag is within the first zone; and when the first position indicates that the first tag is not within the first zone, not reporting data associated with the first tag.
Thu, 18 Aug 2016 08:00:00 EDTMethods and apparatuses for providing information for use in determining a data map of objects are disclosed. Measurement information is provided by a receiver associated with a mobile communication system for objects in an area based on signals from transmitters with known positions. The measurement information is received at a central unit from the receiver and possibly also from at least one further receiver associated with the mobile communication system. A data map of objects in the area is then provided based at least in part on the received measurement information.
Thu, 18 Aug 2016 08:00:00 EDTAn antenna device includes a plurality of antenna elements respectively configured to receive incident waves coming from an object, a modulating unit respectively configured to modulates a first received signal of the incident waves output from the antenna elements into a second received signal, the second received signals having a plurality of different frequencies and phases corresponding to polarization directions of the received incident waves, a synthesizing unit configured to synthesize the plurality of second received signals and generates a synthetic signal, a signal processing unit, configured to perform predetermined signal processing on the synthetic signal, and an extracting unit configured to extract third received signals for each frequency and each phase from the synthetic signal on which has been performed the predetermined signal processing.
Thu, 18 Aug 2016 08:00:00 EDTSystems and methods provide harden wireless intra-vehicular communication against jamming and/or interference. A vehicle comprises a carriage top, an antenna mounted on an outer-vehicle side of the carriage top, and radio frequency absorbing material positioned proximate to the antenna and at least a portion of the carriage top near the antenna.
Thu, 18 Aug 2016 08:00:00 EDTA feed network for use with an antenna array includes at least first and second RF inputs, a combiner network and a beamforming network. In some examples, additional RF inputs are provided. Each RF input corresponds to a sub-band. The first RF input for a first sub-band signal is coupled to a first sub-band parameter control; the second RF input for the second sub-band signal is coupled to a second sub-band parameter control. The combiner network is coupled to the first sub-band parameter control and to the second sub-band parameter control. The combiner network also has at least one output comprising a combination of the first sub-band signal and the second sub-band signal. The beamforming network is coupled to the combiner network and has a plurality of RF outputs. The first and second sub-band parameter controls are independently adjustable. In one example, the beamforming network comprises a Butler matrix.
Thu, 18 Aug 2016 08:00:00 EDTThe phase-locked loop (PLL) presented herein controls the phase of the output of the PLL. To that end, the PLL includes an oscillator that generates an output signal at an output of the PLL responsive to a comparison between a reference signal input to the PLL and a feedback signal derived from the output signal. To control the phase of the output signal, a modulation signal is applied to one input of the oscillator, separate from the reference signal input, where the modulation signal comprises one or more pulses having a total area defined based on the desired phase shift. To maintain the desired phase shift at the output of the PLL, the PLL also sets a time relationship between the reference signal and the feedback signal based on the desired phase shift.
Thu, 18 Aug 2016 08:00:00 EDTApparatus for monitoring an alignment of a base station antenna at a cell site. The apparatus may include an alignment monitor configured to be attached to an antenna mounting bracket for mounting the base station antenna to a support structure. The alignment monitor may include GPS antenna pointing in a direction different than an azimuth pointing direction of the base station antenna.
Thu, 18 Aug 2016 08:00:00 EDTA system is provided for transmitting sub-terahertz electro-magnetic radio frequency (RF) signals using a dielectric waveguide (DWG) having a dielectric core member surrounded by dielectric cladding. Multiple radar signals may be generated by a radar module that is coupled to a vehicle. A set of DWG segments may be used to transport the radar signals to various launching structures placed in various locations of the vehicle.
Thu, 18 Aug 2016 08:00:00 EDTA time to digital converter (10) is disclosed. The time to digital converter (10) comprises: a synchronisation block (20) configured to output a voltage pulse (110) with duration based on a time difference between a reference oscillating signal (101) and an input oscillating signal (107); a charge pump (41) arranged to receive the voltage pulse (110) and to convert the voltage pulse into a current pulse; an integrator (50) comprising an integrator capacitor (24, 25), the integrator (50) being configured to receive the current pulse (110) and integrate the current pulse (110) as a charge on the integrator capacitor (24, 25), resulting in an integrator output voltage (115); and a successive approximation register (40) configured to determine the integrator output voltage (115) with respect to a reference voltage by adjusting the charge on the integrator capacitor (24, 25) so as to reduce the integrator output voltage (115) to within a least significant bit (D0) of a reference voltage by successive approximation, and configured to output the determined integrator output voltage (115) as a digital signal (125). A phase locked loop comprising the time to digital converter (10) is disclosed.
Thu, 18 Aug 2016 08:00:00 EDTThe invention relates to an apparatus and method for augmenting the 3 dimensional position information obtained from the NAVSTAR satellite-based global positioning system (“GPS”) system. Such systems can be impacted by physical obstacles that prevent the receipt of the satellite signals or as a result of sun spot activity that introduces noise into the signals thus causing them to become intermittently unavailable and/or making them less accurate in the course of normal operation. Therefore, an improved positioning solution that can operate under such poor GPS operational conditions is needed. The apparatus and method of the invention augments GPS with dead reckoning techniques when GPS signals are unavailable or inaccurate. The apparatus and method of the invention demonstrates highest value when applied to blasthole drill positioning applications in open-pit mines.
Thu, 18 Aug 2016 08:00:00 EDTA correlation processing method includes generating a correlation code in which a code value of a chip boundary period is set to a value of a replica code, and a code value of a chip center period other than the chip boundary period is set to a predetermined value, and performing a correlation calculation with respect to the correlation code and a received code signal obtained by demodulating a received signal from a positioning satellite.
Thu, 18 Aug 2016 08:00:00 EDTMethods and apparatus are provided for power saving in GNSS receivers. In one novel aspect, the ME tracking period, the ME interval, and the PE working period, the PE interval are dynamically determined based on the GNSS signal conditions and/or the user requirements. In one embodiment, acceptable provision estimated position fix are used. Estimated position result is generated at each GPS position interval if there is no position result generated by the PE working period. In another embodiment, the ME-tracking and/or the PE-working are adjusted to minimum operation needs by using ME-partial (MEP) and/or PE-partial (PEP). PEP is arranged aligned with MEP. In yet another embodiment, the PE working period is delayed such that the PE working period is aligned with the ME tracking period. The position result is generated based on a last epoch's measurement obtained in the previous ME tracking period.
Thu, 18 Aug 2016 08:00:00 EDTIn one embodiment, a method comprising, while traversing a field, monitoring for changes in satellite tracking; and providing a map of one or more obstructions based on satellite data recorded proximally to a detected change in the satellite tracking.
Thu, 18 Aug 2016 08:00:00 EDTA driving lane detection device of the present disclosure includes: an object detector, a vehicle detector, and a driving lane detector. The object detector generates object data relating to a distance and direction from the vehicle to an object and a movement direction of the object based on one or more reflection waves that are a radar signal transmitted by a radar device and reflected by the one or more object. The vehicle detector detects each object as at least one of a parallel-running vehicle running in a same direction as the vehicle or an oncoming vehicle running in an opposite direction to the vehicle, based on the object data. The driving lane detector detects a driving lane based on the distance and direction from the vehicle to at least one of the detected parallel-running and the detected oncoming vehicles and lane information on at least one of lane widths and a number of lanes of a road on which the vehicle is running.
Thu, 18 Aug 2016 08:00:00 EDTSatellite geodesy can identify fault-related surface deformation above onshore oil and gas fields through the use of radar interferometry (InSAR). The method provides an independent and cost-effective approach to identifying faults and damage zones that can be associated with increased reservoir performance beyond traditional tools of subsurface imaging and reservoir evaluation.
Thu, 18 Aug 2016 08:00:00 EDTA capture region calculation unit calculates a capture point having the local highest reflection intensity in power profile information and calculates a capture region surrounding the capture point. An edge calculation unit calculates the edges of one or more objects from image data. A marker calculation unit calculates a marker from the capture region. A component region calculation unit calculates component regions by extending the marker using the edges. A grouping unit groups component regions belonging to the same object, of the component regions. The object identification unit identifies the types of one or more objects (e.g., large vehicle, small vehicle, bicycle, pedestrian, flight object, bird) on the basis of a target object region resulting from the grouping.
Thu, 18 Aug 2016 08:00:00 EDTAn obstruction marking method includes generating a first echo curve using an electronic level gauge (ELG) coupled to a tank from a first reflected signal (echo signal) received when a material in the tank is at a first level. The ELG includes a radar-based obstruction detection algorithm stored in a memory coupled thereto. A processor implementing the obstruction detection algorithm identifies at least a first feature in the first echo curve to provide at least one suspected obstruction along with its position (first feature position). A second echo curve is generated from a second reflected signal when the material is at a second level. A third echo curve is generated from a third reflected signal when the material is at a third level. The suspected obstruction at the first feature position is stored in the memory as a verified obstruction with its first feature position.
Thu, 18 Aug 2016 08:00:00 EDTAn apparatus for detecting a dispersive object in non-dispersive clutter comprising a multi-frequency radar, a signal processor which computes the elapsed time between when each frequency is transmitted and that same frequency is received and the dispersion statistics related to the several frequencies. A dispersion analyzer produces a dispersive object discrimination value which is compared with a threshold by which a detection is declared. The apparatus also utilizes dispersion statistics to differentiate between dispersive and non-dispersive radar returns in order to reject the non-dispersive signals and pass the dispersive signals to a signal integrator which increases the signal-to-clutter ratio thereby improving the probability of detection of subsequent target detection processes.
Thu, 18 Aug 2016 08:00:00 EDTMethods and systems for correcting environmental distortion are disclosed. An example method can comprise receiving a first plurality of signals sampled in space at a first time and determining a first plurality of correction factors based on the first plurality of signals. The first plurality of correction factors can be configured to correct environmental distortion in the first plurality of signals. The first plurality of signals can be corrected by applying the first plurality of correction factors to the first plurality of signals thereby generating a corrected first plurality of signals. The corrected first plurality of signals can be provided. The method can be repeated for one or more additional pluralities of signals sampled in space at times subsequent to the first time with corresponding additional pluralities of correction factors. Each additional plurality of correction factors can be unique to a corresponding plurality of signals.
Thu, 18 Aug 2016 08:00:00 EDTA radar device employs a configuration provided with: a receiver which, in operation, receives one or more radar transmission signals transmitted from another radar device, in an interference measurement segment in which transmission of a radar transmission signal from the radar device is stopped; A/D conversion circuitry which, in operation, converts the one or more radar transmission signals from the other radar device received by the receiver from one or more analog signals into one or more digital signals; and an interference detection circuitry which, in operation, performs a correlation calculation between each of one or more discrete samples that is the one or more digital signals and a prescribed coefficient sequence to detect one or more prescribed frequency components included in the one or more digital signals, as one or more interference signal components.
Thu, 18 Aug 2016 08:00:00 EDTA tracking system is described having at least two mobile transmitter/receivers (“transceivers”) which sense and respond to at least one tracking transceiver. The signals sent to and received from the mobile transceivers are analyzed to get a distance (range) that each is from the tracking transceiver. This can be converted into a position relative to the mobile transceivers. If there are enough transceivers, and at least one knows its absolute location, the absolute location of the mobile transceivers may be determined. Existing smartphones, cellphones, Wi-Fi routers, Bluetooth devices, and near-field devices that have on-board processors, can be modified to run executable code to implement the current invention. They may communicate using at least one of the modalities for tracking. These may be implemented in tracking the position and orientation of moving devices, such as a head-mounted display for virtual/Augmented Reality, automobiles, packages in a package delivery truck. The system may also be implemented to identify and keep track of the last known location of various objects.
Thu, 18 Aug 2016 08:00:00 EDTIn an intelligent monitoring system, a wireless signal processing device transmits a wireless signal toward a first target object in a monitored area, receives a wireless status signal, and generates a monitoring signal corresponding to the first target object according to the wireless status signal. In addition, at least one signal-relaying device receives a back scattering signal, which is reflected from the first target object in response to the wireless signal, transfers the back scattering signal into the wireless status signal, and transmits the wireless status signal to the wireless signal processing device. The signal-relaying device includes a power supply device for supplying power for operations of the signal-relaying device, and the signal-relaying device is disposed in the monitored area between the first target object and the wireless signal processing device.
Thu, 18 Aug 2016 08:00:00 EDTThe present invention relates to a method for indoor localization of a user equipped with a localization device having electromagnetic signal receiver means and means for detecting the orientation in a predetermined spatial reference system, wherein the indoor space is divided up into a plurality of rooms each of which includes a plurality of spatial volumes or areas, nodes, which are connected together in a directed-graph arrangement, and wherein a plurality of radio transmitters each designed to emit a respective localization signal are arranged inside this space. The method is based on the synergic use of three localization methods, i.e. fingerprinting, inertial navigation with intelligent step recognition and proximity localization.
Thu, 11 Aug 2016 08:00:00 EDTA method managing the energy consumption of at least one electronic component in a radar reception chain, comprises a preliminary step of formulating a table containing values representative of the power level of received signals, each value being contained in a bin addressed by a triplet formed of a quantity corresponding to a measurement of the power level of a signal received from a target, of a quantity corresponding to the distance of the target and of a quantity corresponding to the azimuth of the target, the method performing for each received signal, arising from a radar recurrence of order n, the following steps: a step of reading a measurement of the power level of the received signal; a step of addressing the table as a function of the measurement, distance and azimuth of the target, a first power level value then being addressed; a step of extrapolating the power level of the next received signal arising from the following radar recurrence of order n+1, dependent on the first value and on a given number of values of the table addressed by sliding of addresses from the address of the first value according to the power level measurement addresses, the given number being dependent on the speed of the carrier of the reception chain, the step being applied for the received signal of order n+1, the setpoint value of the consumption being dependent at least on the extrapolation of the power level received and the position of the target.
Thu, 11 Aug 2016 08:00:00 EDTA calibration circuit and a method for calibrating a RC circuit, such as a high-pass filter, of an integrated circuit are provided. The calibration circuit comprises a filter arrangement having tuneable filter for filtering an input signal having a predetermined frequency. The filter comprises tuneable resistor elements, a saturation detector for detecting saturation and non-saturation of the tuneable filter by comparing a comparison voltage with the signal voltage of the filtered input signal, calibration control logic for providing incrementing and decrementing counter signals. The calibration circuit sets the comparison voltage to a first threshold voltage provides iteratively the incrementing counter signal to the filter until saturation is detected reduces the comparison voltage to a predetermined second threshold voltage after saturation is detected, the second threshold voltage being a lower value than the first threshold voltage, and provides the decrementing counter signal to the filter until non-saturation is detected.
Thu, 11 Aug 2016 08:00:00 EDTThe present invention provides an artificial microstructure. The artificial microstructure includes at least three split rings. The at least three split rings surround and embed in turn. Each split ring is formed by a wire which is made of conductive material, with two terminals of the wire towards each other to form an opening of the corresponding split ring. The present invention also provides an artificial electromagnetic material using the artificial microstructure. The artificial electromagnetic material with the artificial microstructure can achieve the function of broadband wave-absorbing.
Thu, 11 Aug 2016 08:00:00 EDTThe systems and method described herein provide efficient wireless communication in a millimeter wave (MMW) phased array system. The system may comprise a plurality of antenna elements, each of the plurality of antenna elements coupled to a transceiver and transceiver having at least one power amplifier. The system may further comprise a gain controller configured to enable or disable the transceivers in response to a power detector output indicating that one or more antenna elements are blocked. Disabling certain transceivers of blocked antenna elements enables the power amplifiers associated with the unblocked antenna elements to continue to operate at maximum efficiency.
Thu, 11 Aug 2016 08:00:00 EDTA wireless receiver being capable of determining its velocity with respect to a number of wireless transmitters is provided. The wireless receiver includes a communication interface for receiving a number of carrier signals originating from the number of wireless transmitters, and a processor being configured to determine a number of carrier phases of the carrier signals at two different time instants, to determine a number of carrier phase differences from the determined number of carrier phases for each carrier signal between the two different time instants, to determine a location matrix indicating a geometric relationship between a location of the wireless receiver and a number of locations of the number of transmitters, and to determine the velocity of the wireless receiver upon the basis of the number of carrier phase differences and the location matrix.
Thu, 11 Aug 2016 08:00:00 EDTA method of implementing convergence of a Global Navigation Satellite System (GNSS) receiver is disclosed. A GNSS receiver which is coupled with a mobile machine is shut down. The GNSS receiver is in a converged state at shut down. The GNSS receiver is automatically powered up at a preset time. A convergence algorithm is automatically initiated prior to start of work that utilizes the GNSS receiver.