A process and an image evaluation system are provided with a mobile sensor arrangement, including a camera (IR), a motion sensor (IMU), and a receiver (Komm), that is moved through a spatial area. The camera generates an image sequence. The motion sensor generates an orientation signal with camera viewing direction in a predefined three-dimensional coordinate system when generating an image. A signal processing unit (Sv) checks whether the receiver is receiving a signal from a transmitter (UWB.1, UWB.2, UWB.3) of a transmitter group. If the receiver receives a signal, the signal processing unit determines the distance between the transmitter and the receiver. A classifier (Kl) searches for images of humans in images of the image sequence. The signal processing unit decides whether an image of a human shows a person associated with a transmitter of the transmitter group and may generate a trajectory describing the movement of the camera.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

A receiver circuit is disclosed. The receiver circuit includes one or more receiver antennas configured to receive a plurality of RF signals transmitted from a transmitter circuit including one or more transmit antennas, an RF chain configured to generate a plurality of digitized samples of the received RF signals, and a controller configured to receive the digitized samples, to calculate a plurality of additional samples, and to calculate a measured angle of arrival or angle of departure (AoA or AoD) of the RF signals based on the digitized samples and the calculated additional samples.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

A direction finding method of determining bearings of radio signals by a direction finding system is described. Further, a direction finding system for determining bearings of radio signals is described.

The present disclosure provides an indoor direction finding method, which is applied to an indoor direction finding system. The indoor direction finding system comprises a transmitter and a receiver. A Bluetooth communication link is established between the receiver and the transmitter. The indoor direction finding method is performed by the receiver with the steps of: obtaining a receiver coordinate information of the receiver; receiving a Bluetooth signal moving in single direction at the receiver coordinate information; confirming a relative position information of the transmitter according to the receiver coordinate information and the Bluetooth signal moving in single direction. By obtaining the Bluetooth signal moving in single direction, the azimuth of the transmitter can be confirmed for improving the indoor direction finding accuracy.

A direction detection device includes: antennas that receive a received wave; an intensity difference imparting unit that imparts intensity differences different depending on the received-wave arrival direction to intensities of the received wave; a storage unit that stores an intensity difference table in which the intensity difference between two of the antennas is associated with the received-wave arrival direction, for each combination of any two of the antennas; a detector that detects an intensity difference between the two antennas and a phase difference between the two antennas, of the received wave; an extractor that extracts, from the table, a received-wave arrival direction corresponding to the detected intensity difference, for each combination; a calculation unit that calculates a received-wave arrival direction corresponding to the detected phase difference; and a comparator that compares the extracted received-wave arrival direction with the calculated received-wave arrival direction to acquire a matched received-wave arrival direction.

An antenna apparatus for use in a wireless network and method of operating such an antenna apparatus are provided. A wireless network controller provides a configuration of such an antenna apparatus, a method of operating such a wireless network controller, and a resulting wireless network. The antenna apparatus comprises a directional antenna and a uniform circular antenna array. The directional antenna can be rotatably positioned about an axis with respect to a fixed mounting portion of the apparatus in dependence on wireless signals received by the antenna array. The antenna array allows the antenna apparatus to receive wireless signals isotropically and thus to accurately monitor the wireless signal environment in which it finds itself. The antenna apparatus can thus monitor and characterise incoming signals, both from external interference sources and from other network nodes, and the directional antenna can then be positioned in rotation to improve the network throughput.

A system comprises an array of antennas suitable for intercepting electromagnetic waves, one or more sensors, wherein said one or more sensors are configured to provide data informative of a position of each of a plurality of the antennas over time, wherein each of a plurality of the antennas is linked to a non-rigid portion, thereby undergoing displacement upon displacement of the non-rigid portion, wherein data informative of the electromagnetic waves intercepted by the array and data informative of the position of the plurality of antennas over time are usable for determining data informative of at least one of a position and a direction of at least one emitter of the electromagnetic waves.