Coherent imaging in the range-azimuth plane using a bistatic radiometer based on antennas with beam synthesizing

Mapping of Acoustic Noise and Microwave Radiation

“…These systems are based on time difference of arrival of the radiation received by two or more antennas [3]. Coherent radiometric mapping requires synchronous scanning of antennas additionally.…”

“…This scheme enables accurate range estimation and fine range resolution at the distances comparable with bistatic baseline. A mapping approach with detailed computer simulation and experimental verification is given in [3]. The minimum detectable temperature change of 0.12 K is obtained experimentally.…”

“…A vibration of objects may be estimated with non-acoustic techniques. Radiometric monitoring allows obtaining information about natural thermal electromagnetic radiation of objects at a physical temperature above 0 K [3]. The spatial resolution of the radiometer is usually based on parameters of its real or synthesized antenna beam [4].…”

“…The spatial resolution of the radiometer is usually based on parameters of its real or synthesized antenna beam [4]. However, the spatial diversity of the bistatic radiometer antennas enables to estimate additionally Time Difference Of Arrival (TDOA) of objects thermal emissions [3]. Objects' vibration detector may be based on Doppler filter bank on the output of the bistatic radiometer.…”

Frequency and angular estimations of detected microwave source using unmanned aerial vehicles

“…The signal incoming direction can be estimated using a forward or back looking reconfigurable antenna array [1,2]. Another approach to detect the incoming direction is to use the UAV motion and passive or radiometric Synthetic Aperture Radar (SAR) techniques [3][4][5]. The latter approach provides much higher angular resolution performance and admits exploiting a simple antenna.…”