公开(公告)号：US20200011985A1

公开(公告)日：2020-01-09

申请号：US15830560

申请日：2017-12-04

申请人： The United States of America, as represented by the Secretary of the Navy

发明人： David C. Jenn ,  Phillip E. Pace ,  Ric A. Romero

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.

公开(公告)号：US10509117B1

公开(公告)日：2019-12-17

申请号：US15830560

申请日：2017-12-04

申请人： The United States of America, as represented by the Secretary of the Navy

发明人： David C. Jenn ,  Phillip E. Pace ,  Ric A. Romero

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.