DEVICE TO COMPRESS PULSE PHASE-SHIFT SIGNALS Russian patent published in 1997 - IPC

FIELD: radiolocation, radars using phase-shift signals. SUBSTANCE: device includes two quadrature channels each having n digital filters connected in series from which signals go into m registers, adder and code converter, counter and envelope detector common for both channels. Inputs of quadrature channels are information inputs of device. Clock inputs of all digital filters are tied up and connected to recording inputs of registers, counting input of counter and clock input of device. Input of zero range signal of device is connected to input of zero setting of counter which output is connected to input of code converter which m outputs are connected to inputs of zero setting of proper registers whose outputs are connected to inputs of adders. Outputs of adders are connected to inputs of envelope detector 6 which output is output of device. Operation of device is controlled by signals from radar synchronizer. EFFECT: device makes it possible to effectively detect phase-shift signals from targets at various ranges including those inside "dead zone" (pulse volume of uncompressed phase-shift signal). 5 dwg , 1 tbl