- 专利标题: CONTINUOUS WAVE (CW) RADAR SYSTEM FOR PHASE-CODED TIME DELAYED TRANSMIT-RECEIVE LEAKAGE CANCELLATION
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申请号: US15830560申请日: 2017-12-04
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公开(公告)号: US20200011985A1公开(公告)日: 2020-01-09
- 发明人: David C. Jenn , Phillip E. Pace , Ric A. Romero
- 申请人: The United States of America, as represented by the Secretary of the Navy
- 主分类号: G01S13/38
- IPC分类号: G01S13/38
摘要:
Disclosed is a method, system, and apparatus for transmitting a randomly phase-coded CW waveform in a manner that suppresses signal leakage and enables the recovery of polyphase subcodes advantageous for the purposes of correlation and pulse compression. The CW system transmits and receives a random waveform while concurrently providing properly delayed phase conversion parameters (ϕi−θi) from a corrections generator to various range gates. Each range gate processes any echo returns using a most recent phase conversion parameters (ϕk−θk) provided and correlation of the resulting echo subcodes ϕR produce either target indications or noise signals, depending on the most recent phase conversion parameters (ϕk−θk) provided to the range gate. The system may transmit the randomly phase-coded CW waveform while recovering any phase code {ϕ1, ϕ2, . . . ϕN} that lends itself to advantageous pulse compressions.
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