公开(公告)号：US3811774A

公开(公告)日：1974-05-21

申请号：US24599572

申请日：1972-04-20

Applicant: US ARMY

Inventor： HONEYCUTT T ,  OTTO W ,  CASON C

IPC: G01S17/32 ,  G01C3/08 ,  G01P3/36

CPC classification number: G01S17/325

Abstract: A frequency modulated, continuous wave radar range measurement system using a laser oscillator is disclosed. A ring laser, carbon dioxide (CO2), laser oscillator allows target range and velocity measurement as either an active or a passive system. Nonlinear variation of laser output power is obtained by mixing the reflected signal with the energy within the laser cavity. In an active system the resulting beat frequency is sensed by a local receiver-detector and reduced to obtain the range and velocity data at the transmission site. The beat frequency is also superimposed on the transmitted laser beam and is therefore available at the target causing the beat frequency and is available to other detectors which may be positioned to receive a portion of the reflected energy, affording a passive system.

Abstract translation: 公开了一种使用激光振荡器的调频连续波雷达测距系统。 环形激光器，二氧化碳（CO2），激光振荡器允许目标范围和速度测量作为主动或被动系统。 激光输出功率的非线性变化是通过将反射信号与激光腔内的能量混合而获得的。 在有源系统中，所产生的拍频由本地接收机检测器感测并减少以获得传输站点处的范围和速度数据。 拍频也叠加在发射的激光束上，因此在目标处可以产生拍频，并且可用于可被定位成接收一部分反射能量的其它检测器，从而提供无源系统。