公开(公告)号：WO1997001767A1

公开(公告)日：1997-01-16

申请号：PCT/US1996006454

申请日：1996-05-07

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  LEMPKOWSKI, Robert, B. ,  GHAEM, Sanjar ,  KITCHEN, W., J.

IPC: G01S13/60

CPC classification number: G01S13/003 ,  G01S7/024 ,  G01S13/325 ,  G01S13/60

Abstract: 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.

Abstract translation: 测量装置（103）和方法使用用于发射能量的发射机天线（109）来确定车辆（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。 接收天线（115）具有朝向发射器 - 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，以及朝向地面朝下的部分，用于接收一部分发射能量 沿着反射路径（113）从地面反射。 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路径长度，车辆水平（127）或取决于极化椭圆率变化的前后倾斜角以及路面条件（129）依赖的测量差异来确定车辆高度（125）的装置 在时间上发生的幅度和相位变化。

公开(公告)号：EP0776488A1

公开(公告)日：1997-06-04

申请号：EP96913961.0

申请日：1996-05-07

Applicant: MOTOROLA, INC.

Inventor： LEMPKOWSKI, Robert, B. ,  GHAEM, Sanjar ,  KITCHEN, W., J.

IPC: G01S13 ,  G01S7

CPC classification number: G01S13/003 ,  G01S7/024 ,  G01S13/325 ,  G01S13/60

Abstract: 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.