公开(公告)号：US5420591A

公开(公告)日：1995-05-30

申请号：US78393

申请日：1993-06-16

Applicant: Gilbert Annee ,  Patrick Garrec ,  Pascal Cornic

Inventor： Gilbert Annee ,  Patrick Garrec ,  Pascal Cornic

IPC: G01F23/284 ,  G01S7/02 ,  G01S13/24 ,  G01S13/60 ,  G01S13/46

CPC classification number: G01S13/60 ,  G01F23/284 ,  G01S13/24 ,  G01S7/024

Abstract: Disclosed is a method for the discriminating of obstacles by means of a radar, and its different applications to the measurement of a liquid in a tank or vessel, or again to the elimination of unwanted or parasitic echos coming notably from the ground, for radars mounted on vehicles or controlling vehicle traffic. To implement the method, the obstacle to be discriminated must have a substantially plane surface. The disclosed method then consists in successively transmitting substantially plane waves at slightly different angular frequencies .omega..sub.i, each wave being furthermore sent with two different polarizations p and p' chosen in such a way that these different coefficients of reflection on the obstacles according to the incidence of the waves give a criterion of discrimination. The processing at reception depends on the use (measurement of distance, elimination of parasitic echos etc.). The main promising feature of the invention lies in the fact that it is possible to make very precise measurements without placing excessive constraints on the transmission pattern of the radar.

Abstract translation: 公开了一种通过雷达识别障碍物的方法，以及其对测量罐或容器中的液体的不同应用，或者再次消除了特别从地面引起的不希望的或寄生的回波，用于安装雷达 在车辆上或控制车辆交通。 为了实现该方法，待区分的障碍物必须具有基本上平面的表面。 所公开的方法然后包括以稍微不同的角频率ωi连续发送基本上平面的波，每个波还被进一步以两个不同的极化p和p'发送，使得这些不同的反射系数根据入射 的波浪给出歧视的标准。 接收处理取决于使用（距离的测量，消除寄生回波等）。 本发明的主要前景特征在于，可以进行非常精确的测量而不对雷达的传输模式造成过多的限制。