METHOD FOR PROCESSING RADAR SIGNALS IN A PULSE-DOPPLER RADAR STATION WITH AN ACTIVE PHASED ANTENNA ARRAY Russian patent published in 2021 - IPC G01S13/02 G01S13/04 H01Q3/26 H01Q21/06 

FIELD: radars.

SUBSTANCE: invention relates to the field of radar, specifically to the processing of a radar signal in pulse-Doppler radar stations (RS), and can be used in systems for processing primary radar information of pulse-Doppler radars for various purposes. In the claimed method, in the transmission mode, APAA is used with channels switched on and off by means of electronic keys. Before the emission of a burst of N probe pulses, a window function is selected, which ensures a coherent accumulation of the energy of the received signals. For each probing pulse in the packet, the value of the energy potential of the APAA is estimated, at which the amplitude of the signal at the input of the APAA in the receiving mode will be proportional to the corresponding value of the selected window function. For each probing pulse in the packet, the states of the APAA electronic keys in the transmission mode are set, at which the corresponding value of the APAA energy potential will be achieved at a constant position of the phase center of the switched-on channels. Next, a pack of N coherent probing pulses is emitted with a repetition period T. In the intervals between the radiations of the bundle of probing pulses, signals reflected from objects in the probed region of space are received by all APAA channels in the receiving mode. The received channel signals are amplified and transferred to an intermediate frequency with the formation of quadrature components. The sampling of the quadrature components of the channel signals is performed, N sequences of the quadrature components of the channel signals are recorded in N_t samples. The corresponding samples of N sequences of quadrature components of signals of all APAA channels with the same weights are added, matched filtering of the total sequence of N_t samples is performed, objects are detected with the determination of the range and radial velocity.

EFFECT: ensuring the redistribution of the transmitter power: reducing the average energy potential of the active phased antenna array (APAA) during the emission of a burst of probing pulses while maintaining the characteristics of the signal received for processing, or reducing losses for signal processing while maintaining the average energy potential of the APAA.

1 cl, 7 dwg, 2 tbl