Thu, 03 Nov 2016 08:00:00 EDTA radar sensor for emitting and/or receiving wave-shaped electromagnetic signals, having at least one housing and at least one absorber. The absorber is disposed inside the housing and a surface of the absorber has raised rib-like sections which are disposed adjacently to one another on the surface of the absorber. The absorber is an injection molded component.
Thu, 03 Nov 2016 08:00:00 EDTA device, intended to be fixed on a wall, for absorbing electromagnetic waves. The absorption device comprises a metal plate intended to be fixed on the wall, a dielectric panel at a distance from the metal plate and delimiting, with the metal plate, a volume between the metal plate and the dielectric panel, an array of resistive dipoles, all the resistive dipoles being fixed on the same face of the dielectric panel, and each comprising two metal platelets at a distance from one another and a resistor arranged between the opposing edges of two neighboring metal platelets.
Thu, 03 Nov 2016 08:00:00 EDTThe present disclosure relates to location and communication systems that can be utilized for locating people, pets and other objects with a software defined radio set. A personal electronic device (PED) such as a cellular telephone, personal data assistant (PDA) or other device that include a software defined radio set can be configured for operation as a locator device. The PED transmits a signal A transponder or micro-transponder (MT) that is tagged to an object is arranged to reply to a transmission received from the PED. The PED based locator is arranged to calculate a distance between the PED and the MT using the time-of-flight (TOF) between the transmission and the receipt of a reply. The absolute geographic position of the PED can be determined using satellite navigation information, while the position of the MT relative to the PED can be determined from the TOF information.
Thu, 03 Nov 2016 08:00:00 EDTThis document describes techniques and devices for type-agnostic radio frequency (RF) signal representations. These techniques and devices enable use of multiple different types of radar systems and fields through type-agnostic RF signal representations. By so doing, recognition and application-layer analysis can be independent of various radar parameters that differ between different radar systems and fields.
Thu, 03 Nov 2016 08:00:00 EDTSystem and method for deploying multiple antennas in an array configuration with unobstructed electromagnetic access to a formation outside of a casing, sequencing the transmitted signal to control the direction of transmission into the formation, receiving the reflected signals, and locating the position of the reflection based on the scanned transmission signal orientation and the direction of the received signal. Such a deployment of an antenna array with unobstructed electromagnetic access to the formation outside of the casing, sequencing of the interrogation signal, and analysis of the received signal relative to the transmitted signal direction form the basis for reflection image rendering as the transmitted signal is scanned by a sequenced stimulus signal.
Thu, 03 Nov 2016 08:00:00 EDTTechnology for surveying sensor locations on a physical platform is described. An estimated baseline vector can be calculated between a temporary navigation sensor and each fixed navigation sensor in a group of fixed navigation sensors. The temporary navigation sensor can be temporarily placed on the physical platform. The fixed navigation sensors can be installed on the physical platform. A refined baseline vector between the temporary navigation sensor and each fixed navigation sensor can be successively calculated by fixing carrier phase integer ambiguities that are variables used in the estimation of the baseline vector. A final survey distance between the temporary navigation sensor and each of the fixed navigation sensors can be generated using the refined baseline vector.
Thu, 03 Nov 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, 03 Nov 2016 08:00:00 EDTA method, GNSS simulator, and non-transitory computer readable medium for providing a simulated global navigation satellite system (GNSS) signal. The method includes receiving, by a GNSS simulator, a precision timing signal and one or more items of ephemeris data from a GNSS receiver based on a decoded GNSS signal received by the GNSS receiver. The precision timing signal and the one or more items of GNSS ephemeris data are received in a digital format over a communication network. A simulated GNSS signal is generated, by the GNSS simulator, based on the received precision timing signal and one or more items of ephemeris data. The simulated GNSS signal is transmitted, by the GNSS simulator, over a coverage area. A GNSS system for providing a simulated GNSS signal is also disclosed.
Thu, 03 Nov 2016 08:00:00 EDTThe invention describes a method of monitoring of increased risk of lightning on the basis of information about the increase of electric charge of water droplets, which are obtained by measuring the characteristics of scattered EM radiation. The change of these characteristics is related to the electric charge, which the droplets acquire. In order to normalize the optical characteristics as well as the concentration of droplets it is necessary that the measurements are carried out at two suitably selected wavelengths. The wavelengths can be combined, allowing the use of two or more wavelengths.
Thu, 03 Nov 2016 08:00:00 EDTIn accordance with an example implementation of this disclosure, a multifunction radar transceiver comprises a transmitter and a receiver. The transmitter is operable to modulate data onto a first radar burst, beamform the first radar burst, and transmit the first radar burst via a plurality of antenna elements. The receiver is operable to receive a reflection of the first radar burst, perform beamforming of the reflection of the first radar burst, demodulate the first radar burst to recover the data modulated on the first radar burst, and determine characteristics of an object off of which the first radar burst reflected based on characteristics of the reflection of the first radar burst.
Thu, 03 Nov 2016 08:00:00 EDTA first multifunction radar transceiver comprises a first transmitter and a first receiver. The transmitter is operable to transmit a first radar burst. The receiver is operable to receive reflections of the first radar burst and reflections of a second radar burst transmitted by a second multifunction radar transceiver. The receiver is operable to generate, based on characteristics of the received reflections of the first radar burst and the received reflections of the second radar burst, a first scene representation. The receiver is operable demodulate the second radar burst to recover a second scene representation. The receiver is operable to combine the first scene representation and the second scene representation to generate a composite scene representation.
Thu, 03 Nov 2016 08:00:00 EDTDetection systems for detecting adjacent vehicles and objects around a vehicle including two faces and configured to be secured to a corner of a vehicle. A first antenna face associated with a first antenna is supported by a housing. A second antenna face associated with a second antenna is supported by the housing. An external side of the second antenna face is positioned at a reflex angle with respect to an external side of the first antenna face. The first antenna and the second antenna can be controlled by an electronic control unit that transmits adjacent vehicle and object information detected by the first antenna and the second antenna to other control systems in the vehicle.
Thu, 03 Nov 2016 08:00:00 EDTThe invention relates to a method for extracting ground attribute data in interferometry synthetic aperture radar data, and aims at providing a method for extracting ground attribute data in PS data. The method comprises the following steps that ground geographic data are led; ground boundary data are contracted inwards by Tx in the east-west direction, and are contracted inwards by Ty in the south-north direction, and a new ground boundary is determined again; whether each PS point falls into the new ground boundary or not is judged, and if yes, the data are extracted; if not, the data are removed; a first data set after extraction is obtained; whether the gray value of a PS point image in the first data set is between Vmin and Vmax or not is judged, and if yes, the data are further extracted; if not, the data are removed. The ground attribute data are extracted through the method, so that the accuracy of PS points is 95.1 percent.
Thu, 03 Nov 2016 08:00:00 EDTA forward-looking proximity sensor comprises one or more antenna elements mounted on a carrier platform in a lateral direction of said carrier platform, said antenna elements being configured to transmit a modulated signal in a direction of travel of said carrier platform, said antenna elements receiving a reflected portion of said modulated signal from said target; and a processing unit configured to generate said modulated signal based on a baseband signal and a carrier signal, said processing unit further determining characteristics of said target based on said reflected portion of said modulated signal, said characteristics of said target indicating a range of said target and at least one feature of said target.
Thu, 03 Nov 2016 08:00:00 EDTThe invention relates to a method for using a driver assistance device of a motor vehicle (1) to detect a mark (7) made on a ground (6) by providing a two-dimensional image by means of an imaging sensor (3) of the driver assistance device (2); by identifying a potential mark (7″) on the basis of the two-dimensional image (11); and by performing a distance measurement by means of a distance sensor (4) of the driver assistance device and also taking a result (17) of the distance measurement as a basis for determining whether the potential mark (7″) is the mark (7) made on the ground (6) or a mark (14) on an object (13) that is on the ground (6).
Thu, 03 Nov 2016 08:00:00 EDTSystems, methods and computer-readable media are provided for tracking a moving sports object. In one example, a method of tracking a moving sports object includes calibrating a perspective of an image of a camera to a perspective of a Doppler radar for simultaneous tracking of the moving sports object, and tracking the moving sports object simultaneously with the camera and Doppler radar. The method may further comprise removing offsets or minimizing differences between simultaneous camera measurements and Doppler radar measurements of the moving sports object. The method may also include combining a camera measurement of an angular position of the moving sports object with a simultaneous Doppler measurement of a radial distance, speed or other measurement of the moving sports object.
Thu, 03 Nov 2016 08:00:00 EDTMethods and systems for determining true time delay from each receiving element of an ‘active electronically scanned array’ (AESA) or a phased array antenna. Embodiments of the invention can include electromagnetic EM elements, optical waveguides, and wavelength selective FGBs are collectively configured as a plurality of dual purpose elements that couples an EM field and uses an induced voltage to change an index of refraction of the optical waveguide's electro-optic (EO) material, where the EO material will also function as a dielectric in an antenna element, where the signals comprising optical signals propagate through EM element acting as phase delay elements, where the measuring system compares the reflected signals with a reference signal with no phase delay to determine said signals phase delay.
Thu, 03 Nov 2016 08:00:00 EDTA radar system and method in a host system include a radar detector detecting reflected radar signals and converting the reflected radar signals into digital data signals. A motion detector detects motion of the host system and indicates velocity of the host system. A processor receives the digital data signals and processes the digital data signals to categorize the digital data signals into target categories, one of the target categories being an environmental clutter category, the processor associating each of a plurality of processed groups of the digital data signals with a velocity, one of the groups of digital data being associated with a first preselected velocity. When the velocity of the host system changes, if the velocity associated with the one of the groups of digital data of the environmental clutter category has not changed, then the processor indicates that the radar detector is at least partially blocked.
Thu, 03 Nov 2016 08:00:00 EDTA method for locating communicating objects that make up a fleet. An absolute frame of reference is defined in which the coordinates of the positions of the communicating objects are defined. At least three positions by the coordinates thereof in the absolute frame of reference are defined. The previously defined positions are associated with three communicating objects, referred to as reference objects. A reference object detects the other two reference objects and measures the distance to the two other reference objects. The distance from two reference objects to a fourth communicating object is measured. The geometric location of the distant points from a reference object to the object to be located is the orbit of the reference object. The fourth communicating object is located from at least two orbits previously established and at least one distance among the distances that separate the three reference objects.
Thu, 03 Nov 2016 08:00:00 EDTA system and method of locating a key fob with respect to a vehicle includes: detecting short-range wireless signals communicated between the key fob and a plurality of nodes at the vehicle using an IEEE 802.11 protocol; calculating the distance of the key fob relative to each of the nodes attached to the vehicle based on the detected short-range wireless signal; and determining the location of the key fob based on the distance of the key fob relative to each of the nodes.
Thu, 03 Nov 2016 08:00:00 EDTThe invention pertains to a method for detecting a tag (100) in an area monitored by one or more beacons (200), the tag (100) comprising a magnetic induction module (121) and a transmitter (140), the method comprising the following steps at said tag: receiving, by means of said magnetic induction module, a first beacon message as variations in a magnetic field, said first beacon message comprising beacon information; extracting said beacon information from said first beacon message; and conditionally on said beacon information, transmitting a localisation message by means of said transmitter (140).
Thu, 03 Nov 2016 08:00:00 EDTA guided wave radar fluid level measurement system can measure the level of product in a tank. A pulse of RF energy sent along a waveguide in the tank can be reflected where the waveguide enters the product. A time of flight measurement can indicate the product level. The product inside the tank can flow and that flow can push the waveguide and thereby torque and possibly bend the waveguide. A streamlined wave guide is torqued less when the streamlining is aligned with the direction of flow. A rotating connector can provide for the waveguide to rotate and a weathervane effect can align the streamlined waveguide with the flow.
Thu, 03 Nov 2016 08:00:00 EDTThe invention relates to apparatus which includes an array antenna and which is provided of a form to be used in the selective disablement of the managements system of a vehicle so as to render the vehicle incapable of further movement and therefor neutralise any threat which may be posed by the vehicle continuing to be moved and/or by the contents of the vehicle, such as explosives, and thereby prevent the vehicle from representing a risk. The apparatus includes a magnetron and an array antenna including a screen which is provided with apertures in a configuration which is selected to allow the microwave energy to be emitted in a specific manner so as to be focussed and thereby allow the apparatus to be directional with respect to the disablement of a specific vehicle.