发明授权
- 专利标题: Laser radar utilizing pulse-tone waveform
- 专利标题(中): 激光雷达采用脉冲音波形
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申请号: US725243申请日: 1985-04-19
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公开(公告)号: US4690551A公开(公告)日: 1987-09-01
- 发明人: Brian E. Edwards , David G. Biron
- 申请人: Brian E. Edwards , David G. Biron
- 申请人地址: MA Cambridge
- 专利权人: Massachusetts Institute of Technology
- 当前专利权人: Massachusetts Institute of Technology
- 当前专利权人地址: MA Cambridge
- 主分类号: G01S7/483
- IPC分类号: G01S7/483 ; G01S7/499 ; G01S17/10 ; G01S17/58 ; G01S17/87 ; G03G15/00
摘要:
Pulse-tone laser radar utilizing an acousto-optic angular multiplexer and frequency shifter. The laser radar includes both a pulsed laser and a CW laser. A portion of the CW laser beam is utilized as a reference or local oscillator. An acousto-optic angular multiplexer passes the output of the pulsed laser when the acousto-optic multiplexer is in its off state and passes and frequency shifts the output of the CW laser when the acousto-optic multiplexer is in its on state. The acousto-optic angular multiplexer is operated to pass a pulse followed by a CW tail to generate the pulse-tone waveform. The return signal from a target is beat together with the local oscillator signal derived from the CW laser. The resulting beat signal includes both range and velocity information.
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