An ultra-wideband (“UWB”) communication system comprising a transmitter and a receiver having two antennas. An UWB signal transmitted by the transmitter is received at each of the antennas. By comparing the carrier phases of the received signals, the phase difference can be determined. From this phase difference and the known distance, d, between the antennas, the Cartesian (x, y) location of the transmitter relative to the receiver can be directly determined.

Example techniques relate to playback based on acoustic signals in a system including a first network device and a second network device. A first network device may detect a presence of a user using a camera and/or infrared sensors. The first network device sends, in response to detecting the presence of the user, a particular signal via the first network interface. The second network device receives data corresponding to the particular signal and plays back an audio output corresponding to the particular signal.

The present invention relates to a method for testing the accuracy of the automatic positioning means of a signal tracking antenna during a satellite signal searching and/or tracking operation; wherein the platform, such as a ship, on which the signal tracking antenna is mounted is kept stationary during the testing operation. The method includes the use of an unmanned aerial vehicle and a control station.

The invention relates to a method (300) for calibrating an airborne goniometry apparatus by means of a generator, referred to as calibration generator, remote from said airborne goniometry apparatus, said method (300) comprising the following steps: sharing (304), between said goniometry apparatus and said calibration generator, a calibration sequence, sharing (308), between said goniometry apparatus and said calibration generator, a start time of said calibration sequence, and executing (310) said calibration sequence by said goniometry apparatus and by said calibration generator, at said start time;
characterized in that said start time is determined in reference to the same clock (H), referred to as reference clock, provided to said goniometry apparatus and said calibration generator, by an external source (206).

It likewise relates to an installation implementing such a method.

Example techniques relate to playback based on acoustic signals in a system including a first network device and a second network device. A first network device may detect a presence of a user using a camera and/or infrared sensors. The first network device sends, in response to detecting the presence of the user, a particular signal via the first network interface. The second network device receives data corresponding to the particular signal and plays back an audio output corresponding to the particular signal.

To provide a novel and improved control device and storage medium capable of performing control based on a positional relation with higher accuracy.

A control device includes a control unit configured to perform control based on a presence area of a first communication device determined using a signal transmitted and received between the first communication device and at least one second communication device. The control unit performs control related to an operation of a controlled device in accordance with a second presence area when a first presence area determined based on a coordinate position of the first communication device on an arbitrary coordinate system associating the first communication device with the second communication device is inconsistent with the second presence area determined based on a distance between the first and second communication devices.

Example techniques relate to playback based on acoustic signals in a system including a first network device and a second network device. A first network device may detect a presence of a user using a camera and/or infrared sensors. The first network device sends, in response to detecting the presence of the user, a particular signal via the first network interface. The second network device receives data corresponding to the particular signal and plays back an audio output corresponding to the particular signal.

A phased array antenna system includes a plurality of radio frequency (RF) tile sub-arrays. Each RF tile sub-array includes a multiplicity of RF elements, a tile control integrated circuit, a multiplicity of RF integrated circuits and a configuration storage device. The configuration storage device stores data including calibration and configuration information that is unique to the RF tile sub-array and the tile control integrated circuit. The multiplicity of RF integrated circuits, the multiplicity of RF elements, and the configuration storage device are disposed on a single associated RF tile sub-array. The system also includes an antenna controller configured to process data for steering or tracking one or more RF beams by the multiplicity of RF elements. The calibration and configuration information that is unique to the RF tile sub-array is downloaded from the configuration storage device through the tile control integrated circuit to an RF element compensation table.

A mobile radio direction finding (RDF) calibrator, and a method of using it to calibrate an RDF system aboard a vehicle. The calibrator has a GPS (global positioning satellite) or other GNSS (global navigation satellite system) receiver, which permits the calibrator to make its location known to the calibration process of the RDF-equipped vehicle. During calibration, the calibration process controls the calibrator remotely. As the RDF-equipped vehicle moves in a circle, it collects calibration response data, as well as location data, so that the calibration response data can be mapped to the correct azimuth.

A radio receiver is made much more immune to jamming signals. A vector EM sensor, in a 2-dimensional (3-axis sensor) or 3-dimensional (6-axis sensor) sensor configuration, is combined with a unique digital rotation to a preferred direction to create a new reference channel and, using an advanced frequency domain noise mitigation algorithm or other noise cancellation algorithm, can effectively reject jamming and other interference signals and improve the signal-to-noise ratio (20-40 dB) and the receiving performance of the receiver. The method can cancel both near-field and far-field interference and improve accuracy for various applications concerned with establishing the direction, or bearing, to a source. A communication receiver with the vector sensor and the cancellation algorithm has unique anti-jamming capabilities even for multiple jamming sources.