METHOD OF DIGITAL PROCESSING OF SIGNALS IN RADAR LOCATION STATIONS WITH SYNTHESIZED ANTENNA APERTURE OF CONTINUOUS RADIATION AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC G01S13/90 

FIELD: radio engineering, communication.

SUBSTANCE: method is performed by equalizing the amplitude-frequency spectrum of the signal before digitizing it. After equalization, the dynamic range of the signal amplitude at the input of the analog-to-digital converter decreases, which in turn leads to a decrease in the minimum signal level that can be digitized with it. For the practical realisation of the method for digital signal processing in the radar with synthetic aperture continuous wave antenna device comprising a series-connected receiver and a multiplier sequentially connected analog-digital converter and a digital processor, and a transmitter whose output is connected to the second input of the multiplier, additionally introduced frequency correcting circuit, whose input is connected to the output of the multiplier, and an output - to the input of an analog-digit converter. The amplitude-frequency characteristic of the frequency correcting circuit is inversely proportional to the law of variation of the amplitudes of the frequency components from the range.

EFFECT: alignment of the average level of brightness of the radar image in the direction of the far edge of the field of view, increasing the range of the radar.

2 cl, 1 dwg