公开(公告)号：US3856403A

公开(公告)日：1974-12-24

申请号：US33968573

申请日：1973-03-09

Applicant: LITTON SYSTEMS INC

Inventor： MAUGHMER R ,  YAMAMOTO J

IPC: G01P3/36 ,  G01S17/50

CPC classification number: G01S17/50 ,  G01P3/366

Abstract: A laser velocimeter system for measuring the relative velocity between a carrier and a light scattering source illuminated by laser light. Light energy reflected from the laser illuminated scattering source is utilized to derive a signal indicative of the relative velocity. The reflected energy passes through a moving optical grating and is received by a light sensitive detector. The output signal of the detector is modulated by the effect of the grating moving across the speckle field of the reflected laser light, with the motion of the grating providing a velocity bias to the system.

Abstract translation: 一种用于测量由激光照射的载体和光散射源之间的相对速度的激光测速仪系统。 利用从激光照射的散射光反射的光能导出表示相对速度的信号。 反射能量通过移动的光栅并由光敏检测器接收。 检测器的输出信号通过光栅移动穿过反射激光的斑点场的影响来调制，光栅的运动为系统提供速度偏置。

公开(公告)号：US3711200A

公开(公告)日：1973-01-16

申请号：US3711200D

申请日：1970-09-18

Applicant: LITTON SYSTEMS INC

Inventor： MAUGHMER R

IPC: G01P3/36

CPC classification number: G01P3/366 ,  G01P3/36

Abstract: A laser velocimeter system for measuring the relative threedimensional vectorial velocity between a carrier and the surface over which the carrier moves. Light energy reflected from laser illuminated portions of the surface is utilized to compute the velocity of the carrier along each of three orthogonal coordinates. Different portions of the reflected energy are received by three light sensitive detectors after the energy first passes through coplanar optical gratings-a separate grating being associated with each of the light sensitive detectors. The output signals of the detectors are modulated by the effects of the gratings; and these last mentioned signals are processed by frequency tracker units and by a computer to provide signals representative of the relative vectorial velocity.

Abstract translation: 激光测速仪系统，用于测量载体与载体移动的表面之间的相对三维矢量速度。 利用从表面的激光照射部分反射的光能量来计算载体沿三个正交坐标中的每一个的速度。 在能量首次通过共面光栅之后，三个光敏检测器接收不同部分的反射能量，一个独立的光栅与每个光敏检测器相关联。 检测器的输出信号由光栅的影响进行调制; 并且这些最后提到的信号由频率跟踪器单元和计算机处理以提供表示相对矢量速度的信号。