RECEIVER OF COHERENT-PULSE RADAR WITH LARGE DYNAMIC RANGE Russian patent published in 2004 - IPC

FIELD: procedure of processing of radar signals.

SUBSTANCE: the coherent-pulse radar receiver with a digital output is introduced in the unit of tuned amplifiers with a time-varied gain control circuit providing a controller gain. The gain factor of the unit of tuned amplifiers with a time-varied gain control circuit varies discretely by commands from the parallel information line. Variation of the gain factor of the amplifier unit is effected due to a discrete variation of the value of successive negative feedback by the gates on field-effect transistors. The gain setup time is 1.5. Formation of the monitoring signal for check-up of the quadrature of the receiving channels is accomplished by a crystal oscillator, and for production of reference signals for synchronous transducers in a coherent-pulse receiver with a digital output use is made of a reference-frequency signal formed at the signal conditioner.

EFFECT: expanded dynamic range of the device and enhanced accuracy of adjustment of the quadrature of receiver signals.

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