REJECTOR FILTER Russian patent published in 2022 - IPC H03H7/12 G01S7/36 

FIELD: radar engineering.

SUBSTANCE: invention relates to radar engineering and can be used in coherent-pulse radar systems for separating signals from moving targets against the background of passive interference with an unknown Doppler phase. The notch filter additionally contains the second and third delay blocks, a complex multiplier, a complex inverter, and a Doppler phase meter. The inputs of the second delay block are connected to the first inputs of the Doppler phase meter, and the outputs are connected to the inputs of the first delay block. The outputs of the first delay block are connected to the inputs of the third delay block and the second inputs of the Doppler phase meter. The outputs of the Doppler phase meter are connected to the second inputs of the complex multiplier. The outputs of the third delay block are connected to the first inputs of the complex multiplier. The outputs of the complex multiplier are connected to the inputs of the complex inverter. The outputs of the complex inverter are connected to the second inputs of the complex adder. The output of the clock generator is also connected to the clock inputs of the second and third delay units, complex multiplier, complex inverter and Doppler phase meter. The inputs of the notch filter are the inputs of the second delay block, and the outputs are the outputs of the complex adder.

EFFECT: increasing the efficiency of rejecting passive interference with a priori unknown Doppler phase and separating signals from moving targets.

1 cl, 8 dwg