| 摘要 |
2. A search system for detecting moving targets, in chaff, and including a transmitter for reflecting bursts of randomly phase coded, electromagnetic energy from a target, and a receiver, said receiver comprising A DELAY LINE HAVING A PLURALITY OF OUTPUT TAPS THEREON, MEANS FOR APPLYING SAID REFLECTED BURSTS TO SAID DELAY LINE, A PLURALITY OF PHASE SHIFTERS WHICH ARE PRESET IN ACCORDANCE WITH THE PHASE CODING OF SAID TRANSMITTER, EACH PHASE SHIFTING MEANS BEING CONNECTED TO A DIFFERENT OUTPUT TAP OF SAID DELAY LINE, SAID PLURALITY OF PHASE SHIFTERS REMOVING SAID PHASE CODING FROM SAID BURSTS AND PROVIDING A PURE Doppler signal output, and DISPLAY MEANS OPERABLY CONNECTED TO RECEIVE THE OUTPUT FROM EACH OF SAID PHASE SHIFTING MEANS FOR INDICATING THE Doppler shift introduced by the target to each pulse of said burst.
|
