RADIO-RECEIVING DEVICE OF COHERENT RADAR WITH OPTIMUM FILTRATION OF SIGNAL Russian patent published in 2005 - IPC

FIELD: procedure of processing of radar signals.

SUBSTANCE: the device has the first and second receiving channels. The first receiving channel includes device of quadrature phase detection A1 and preliminarily processing device A3, quadrature phase detection device A1 of the first channel has an adder, amplifier unit with a time automatic gain control, the first and second frequency mixers, the first and second operational amplifiers, the first and second voltage comparators, the first and second low-pass filters, the first and second integrators, the first, second monitory circuit and a serviceability signal formation circuit. In its turn preliminarily processing device A3 of the first channel consists of the first and second analog-to-digital converters, the first and second digital-to-analog converters, digital heterodyning device, permanent storage of the digital heterodyning device, the first and second reversible counters, the first and second N-digit counter-type adders, the first and second multiplexers, write address driver, the first and second internal storages of every-period processing, read address driver, the first and second optimum filters, reference signal conditioner, first and second microcircuits FiFo ("first entered, first left"), control device, the first and second switches. The second receiving channel has quadrature phase detection device A2 and preliminary processing device A4, which schematically-structurally are made similarly to quadrature phase detection device A1 of the first channel and preliminary processing device A3 of the first channel. The radio receiving device of the coherent radar with optimum filtration signal includes the first and second decoders, crystal oscillator, level converter, frequency divider, band-pass filter, differentiating circuit, integrating circuit, the first and second tuned amplifiers, the third and fourth multiplexers and a signal synchronizer. The device also has a connector of the first channel input signal, connector of the input reference signal, connector of the second channel input signal, contact of the pulse for formation of the strobe pulse of antenna re-tuning, contact of the trigger signal the transmitter final stage, contact of the signal determining the phase of the transmitter trigger pulse, contact of the signal determining the phase of the transmitter trigger pulse, contact of the signal of the receiver blanking pulse, contact of the pulse accompanying the main signal, contact of the pulse of transmission beginning, connector of the output signal of the imaginary component, and a parallel information line.

EFFECT: expanded functional potentialities and improved basic technical characteristics of the radar parameters.

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