SIGNAL FILTER WITH V-FREQUENCY MODULATION Russian patent published in 2022 - IPC H04B1/12 H04B1/707 

FIELD: radar.

SUBSTANCE: invention relates to the field of radar, in particular to methods and techniques for processing radar signals, and can be used to build radar signal processing devices. The signal filter with V-shaped frequency modulation contains a signal separation unit, the first and second compression filters, an adder, a subtraction unit, the first and second limiters from below at the zero level, and an intersection unit. The input of the signal splitting block is the input of the filter. The first output of the signal separation unit is connected to the input of the first compression filter, and the second output is connected to the second input of the adder through the second compression filter. The input of the subtracted unit to be reduced is connected to the output of the first compression filter and the first input of the adder, and the input of the subtracted unit is connected to the second input of the adder. The inputs of the first and second limiters from the bottom at the zero level are connected to the outputs of the adder and the subtractor, respectively. The first and second inputs of the crossing block are connected to the outputs of the first and second limiters from below at the zero level, respectively. The output of the intersection block is the output of the filter. The impulse response of the first compression filter is matched to the entire signal. One half of the impulse response of the second compression filter is in phase with the corresponding half of the impulse response of the first compression filter, while the other half is in phase with the second half of the impulse response of the first compression filter.

EFFECT: decrease in the number and decrease in the level of side peaks of the autocorrelation function and the relative level of noise and interference at the filter output.

1 cl, 8 dwg