Abstract: A UWB measuring device, in particular a hand-held positioning device, includes at least one signal-generating unit for generating at least one first UWB measuring signal, which is intended for a UWB measurement. The signal-generating unit is provided for generating a second measuring signal that differs from the first UWB measuring signal in at least one signal parameter. The second measuring signal is intended to detect a distance from an examination object and/or contact with the examination object.

Abstract: A radio signal processing system includes a first antenna; a second antenna; a first receiver communicatively coupled to the first antenna; a second receiver communicatively coupled to the second antenna; a first processing unit communicatively coupled to the first receiver and configured to receive a first signal from at least one of the first antenna and the second antenna when the system is operating in a first mode; a second processing unit communicatively coupled to the second receiver and configured to receive a second signal from the second antenna when the system is operating in a first mode; and wherein the first processing unit is further configured to receive a third signal from both the first antenna and the second antenna when the system is operating in a second mode.

Abstract: Methods and apparatus for scanning articles, such as footwear, to provide information regarding the contents of the articles are described. According to one aspect, a footwear scanning system includes a platform configured to contact footwear to be scanned, an antenna array configured to transmit electromagnetic waves through the platform into the footwear and to receive electromagnetic waves from the footwear and the platform, a transceiver coupled with antennas of the antenna array and configured to apply electrical signals to at least one of the antennas to generate the transmitted electromagnetic waves and to receive electrical signals from at least another of the antennas corresponding to the electromagnetic waves received by the others of the antennas, and processing circuitry configured to process the received electrical signals from the transceiver to provide information regarding contents within the footwear.

Abstract: Methods and compositions for preventing opposing ILS systems on a single runway from becoming active at the same time. A physical interlock system employs a physical switch element that may activate a first ILS system or an opposing second ILS system, but is not capable of permitting, and may prevent, opposing ILS systems from being active simultaneously. Also included are methods for preventing opposing ILS systems on a single runway from becoming active, comprising the use of a physical switch preventing activating signals from being sent to opposing ILS systems at the same time.

Abstract: A method of measuring phase noise (PN). A PLL frequency synthesizer is provided including a first phase frequency detector (PFD) receiving a reference frequency signal coupled to a first charge pump (CP) coupled to a VCO having an output fedback to the first PFD through a feedback divider that provides a divided frequency signal to the first PFD which outputs an error signal, and PN measurement circuitry including a replica CP coupled to an output of a second PFD or the first PFD. The error signal is received at the replica CP or the divided and reference frequency signal are received at the second PFD, wherein the replica CP outputs a scaled phase error current which is current-to-voltage converted and amplified to provide an amplified phase error voltage, and digitized to provide a digital phase error signal. The digital phase error signal is frequency analyzed to generate a PN measurement.

Abstract: An all-solid-state marine radar technology based on a non-rotating cylindrical array antenna is described. Multiple transmit/receive (T/R) modules are used to form the antenna beam, which allows the beam sequencing, the dwell time in each beam position, the resolution, and the beam shape to be varied in order to make best use of the available energy. Waveforms with a high duty ratio can be used on transmit in order to make efficient use of solid-state power amplifiers. High resolution in both range and Doppler provides high measurement accuracy and superior performance in clutter. Alternate embodiments, including continuous waveform embodiments are disclosed.

Abstract: Embodiments of the invention provide apparatus (100) for detecting an erroneous measurement of a range of a target object 20 from a subject object 5. A transmitter transmits a signal (111S) having a first frequency from the subject object (5) to the target object (20). A detector (113) detects a portion of the signal (113S) reflected from the target object (20) back to the subject object (5); a controller is configured to determine the range (202) of the target object (20) from the subject object (5) by reference to a time of flight of the portion of the signal (111S), (113S) from the transmitter (111) to the detector (113); determine the rate of change of the range (203) by reference to a difference between the first frequency and an apparent frequency of the reflected portion of the signal (113S) detected by the detector; and provide an indication (206) that an erroneous measurement of range has been made if the range (202) increases while the rate of change of range (203) is negative.

Abstract: A method for sensing occupancy status within an automotive vehicle uses a radar sensor system, the radar sensor system includes an antenna system, at least one sensor and processing circuitry. The method comprises illuminating, using the antenna system, at least one occupiable position within the vehicle with continuous wave (CW signals), the CW signals being frequency modulated in time. At least one sensor signal (y(t,f1 . . . y(t,fn)) reflected as a result of the CW signals, is received using at least one sensor the at least one sensor defining a plurality of receive channels (1 . . . i), each channel having a different frequency (f1 . . . fi). Processing circuitry is operable for applying, for each receive channel (1 . . . i), DC offset removal to the corresponding sensor signal (y(t,f1 . . . y(t,fn)) to generate a modified signal (y?(t, f1) . . . y?(t,fn)); and generating, based on the modified signals (y?(t, f1) . . .

Abstract: Under control of a first transmission code controlling section, a first radar transmitting section periodically transmits a first radar transmission signal with a first transmission period based on a first transmission trigger signal produced after elapse of a first delay time period from reception of a predetermined synchronization establishment signal by a first transmission trigger signal producing section. Under control of a second transmission code controlling section, a second radar transmitting section periodically transmits a second radar transmission signal with a second transmission period similarly. In accordance with the first delay time period and the second delay time period, arrival times of interference signals from the first radar transmitting section and the second radar transmitting section are within transmission zones of the second radar transmission signal and the first radar transmission signal.

Abstract: The invention relates to a system for the illumination and imaging of objects with the assistance of electromagnetic radiation, for example, millimeter radiation. Such a system comprises at least one transmitting antenna, at least one receiving antenna, and at least one reflector element. An actively polarizing material layer is present on the reflector element. A processing unit determines an image of the object on the basis of the radiation received from the receiving antenna.

Abstract: An echo signal processing device is provided. The device includes an image generating module configured to generate an echo image at a plurality of timings, the echo image generated based on echo signals received by an antenna installed in a movable body. The device also includes a positional information acquiring module configured to acquire absolute positional information of the movable body. The device also includes an analytic area specifying module configured to specify an analytic area in the echo image by an absolute position, based on the absolute positional information. The device also includes a storage configured to store analytic area images, each analytic area images being a part of each echo image, the part corresponding to the analytic area. The device also includes a calculating module configured to calculate echo signal information regarding the echo signals from the analytic area, based on the stored analytic area images.

Abstract: The present invention relates to a guided wave radar level gauge for determining a filling level of a product contained in a tank, said guided wave radar level gauge i.a. comprising a probe comprising a plurality of elongate probe sections each being pivotably connected to an adjacent probe section by means of a joint, said joint allowing probe sections to pivot between an operating state where said probe sections are substantially aligned along a straight line, and a transporting state. The present invention also relates to a probe, and to a method for arranging a guided wave radar level gauge in a tank.

Abstract: An apparatus for testing the performance of a synthetic aperture radar is provided. The apparatus for testing the performance of a synthetic aperture radar includes: a three-axis motion platform that is coupled to an antenna and driven in roll, pitch, and yaw directions so as to reproduce motion components generated from a pointing plane of the antenna; a target simulator configured to reproduce a ground target; and a system simulator that allows the three-axis motion platform and the target simulator to work in conjunction with each other in real time, and controls the three-axis motion platform and the target simulator. Here, the three-axis motion platform may include a three-axis driver that determines the attitude of the three-axis motion platform, based on position and speed information received from the system simulator.

Abstract: A detection device for detecting an OUD (Object Under Detection) includes a first antenna element, a second antenna element, a first transceiver, a second transceiver, a first circulator, and a second circulator. The first transceiver transmits a first electromagnetic signal through the second circulator and the second antenna element to the OUD, and then receives a first reflective signal through the first antenna element and the first circulator from the OUD. The second transceiver transmits a second electromagnetic signal through the first circulator and the first antenna element to the OUD, and then receives a second reflective signal through the second antenna element and the second circulator from the OUD.

Abstract: An example method for a beamforming network for feeding short wall slotted waveguide arrays. The beamforming network may include six beamforming network outputs, where each beamforming network output is coupled to one of a set of waveguide inputs. Further, the beamforming network may include a cascaded set of dividers configured to split electromagnetic energy from a beamforming network input to the six phase-adjustment sections. The cascade may include a first level of the cascade configured to split the electromagnetic energy from the beamforming network input into two first-level beamforming waveguides, a second level configured to split the electromagnetic energy from each of two first-level beamforming waveguides into two respective second-level beamforming waveguides, and a third level of the cascade configured to split the electromagnetic energy from one of two respective second-level beamforming waveguides into two respective third-level beamforming waveguides.

Abstract: On a radar apparatus, a direction derivation part derives a peak angle related to an angle of a target based on reception signals received by a plurality of reception antennas. Then, a detection information derivation part derives, based on the peak angle, target data that are internal data about the target, and stores the derived target data into a memory. A reliability determination part determines a reliability of an object peak angle upon which the target data about the target was derived, the reliability of the object peak angle being determined based on a different peak angle derived concurrently with the object peak angle by the direction derivation part. Then, a data erasure part deletes, based on the reliability of the object peak angle determined by the reliability determination part, the target data relevant to the object peak angle from the memory to exclude the target data from further processing.

Abstract: A peripheral object detection apparatus that is installed in a vehicle to detect a peripheral object obstructing travel by a vehicle includes: a radar that obtains a reflection intensity by transmitting an electromagnetic wave and receiving an electromagnetic wave reflected by an object; and a determination unit that calculates an integrated value of an amount of variation in the reflection intensity within a predetermined section, obtained by the radar, and determines on the basis of the integrated value whether or not the object is a low object not obstructing travel by the vehicle.

Abstract: A radar sensing system for a vehicle includes a transmitter, a receiver, a memory, and a processor. The transmitter transmits a radio signal and the receiver receives a reflected radio signal. The processor samples reflected radio signals during a plurality of time slices. The processor produces samples by correlating reflected radio signals to time-delayed replicas of transmitted radio signals. The processor accumulates the time slices into a first radar data cube and stores the first radar data cube in a memory. The processor combines a portion of the first radar data cube with a portion of a previously stored radar data cube. Based at least in part on the combined portions of the radar data cubes, the processor processes a time series that is a time series of the first radar data cube concatenated with a time series from the previously stored radar data cube.

Abstract: An influence system including open cell structures with one or more fractal reflective or resonating structures, wherein the fractal reflective or resonating structures are adapted to produce an emitted reflective or resonance signal that approximately matches a target electromagnetic signal reflection or resonance profile comprising a plurality of electromagnetic signal characteristics, said plurality of electromagnetic signal characteristics, a tow yoke coupled to one end of said blanket comprising a floatation chamber section, a tow cable adapted to tow said tow yoke and blanket, said tow cable comprising a low electromagnetic observable material or having a radar absorptive material coating.

Abstract: An all-solid-state marine radar technology based on a non-rotating cylindrical array antenna is described. Multiple transmit and receive modules are used to form the antenna beam, which allows the beam sequencing, the dwell time in each beam position, the resolution, and the beam shape to be varied in order to make best use of the available energy. Waveforms with a high duty ratio can be used on transmit in order to make efficient use of solid-state power amplifiers. High resolution in both range and Doppler provides high measurement accuracy and superior performance in clutter. Alternate embodiments, including continuous waveform embodiments are disclosed.