FIELD: physics.
SUBSTANCE: device has a compensation-type digital moving target selector (MTS), a wide-band filter, a modulator, an amplifier and a multi-channel device for correlation-filter processing of pulsed Doppler radar signals selected in the MTS, as well as a weight function generator. The compensation-type digital MTS has an algebraic adder in a direct channel and, in a compensation channel, an analogue-to-digital converter, a digital low-pass filter (DLPF), a digital attenuator (DA), a digital delay line (DDL) and a digital-to-analogue converter, and also has a digital computer (DC) which controls operation of the DLPF, DA and DDL, wherein all these devices are connected to a radar synchronisation pulse source. The listed apparatus are connected to each other in a defined way. The DLPF used is a second-order recursive DLPF with special normalising and weight coefficients, uniquely associated with a parameter which is common for all, which determines the bandwidth of rejection crests of the digital MTS.
EFFECT: high stability of the value of suppressing noise spectral crests, electronic control of parameters of suppressing and eliminating intermodulation interference when processing powerful signal.
2 cl, 8 dwg
