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1. 发明授权

US5621413A Vehicle-ground surface measurement system 失效
标题翻译：车载地面测量系统
公开(公告)号：US5621413A
公开(公告)日：1997-04-15
申请号：US496512
申请日：1995-06-29
申请人： Robert B. Lempkowski , Sanjar Ghaem , W. J. Kitchen
发明人： Robert B. Lempkowski , Sanjar Ghaem , W. J. Kitchen
IPC分类号： G01S7/02 , G01S13/00 , G01S13/32 , G01S13/60
CPC分类号： G01S13/003 , G01S13/60 , G01S13/325 , G01S7/024
摘要： A measurement device (103) and method determines various metrics between a vehicle (101) and a ground surface (105) using a transmitter-antenna (109) for emitting energy including a portion directed down toward the ground surface. A receiving antenna (115), has a portion oriented facing toward the transmitter-antenna for receiving a portion of the emitting energy along a direct path (117), and a portion oriented facing downwardly toward the ground surface for receiving a portion of the emitting energy reflected from the ground surface along a reflected path (113). A decoder provides separate indications of forward (121) and sideward (123) velocity relative to motion of the vehicle along the ground surface. Furthermore, the decoder comprises means for determining vehicle height (125) dependent on a measured difference in path length, vehicle level (127), or front to rear tilt angle, dependent on polarization elliptical ratio changes, and road surface conditions (129) dependent on amplitude and phase changes that occur versus time.
摘要翻译：测量装置（103）和方法使用发射器天线（109）确定车辆（101）和地面（105）之间的各种度量，所述发射器 - 天线用于发射包括朝向地面的向下的部分的能量。接收天线（115）具有朝向发射机天线定向的部分，用于沿着直接路径（117）接收一部分发射能量，以及朝向地面向下定向的部分，用于接收发射的一部分沿着反射路径（113）从地面反射的能量。解码器提供相对于车辆沿着地面的运动的向前（121）和侧向（123）速度的独立指示。此外，解码器包括用于根据取决于极化椭圆率变化的路径长度，车辆水平（127）或前后倾斜角度的测量差异以及与路面状况（129）有关的方式来确定车辆高度（125）的装置在时间上发生的幅度和相位变化。

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