公开(公告)号：US5402346A

公开(公告)日：1995-03-28

申请号：US112842

申请日：1993-08-25

申请人： Didier Lion ,  Eric de Poulpiquet

发明人： Didier Lion ,  Eric de Poulpiquet

IPC分类号： G01S13/50 ,  G01S13/58 ,  G01S13/64 ,  G01S13/91 ,  G01S13/92 ,  G08G1/01 ,  G08G1/015 ,  G06F15/70

CPC分类号： G08G1/01 ,  G01S13/64 ,  G01S13/92 ,  G08G1/015

摘要： This invention comprises a system for calculating at least one vehicular traffic check parameter. The system according to the invention includes a pulse modulated radar placed at a high point at the side of the lanes to be monitored. The radar emits pulses having a frequency f.sub.o and width .tau. according to a radiation diagram. The radiation diagram is narrow in plan and sufficiently wide in elevation to cover all lanes to be monitored, and inclined in elevation and plan such that at least one range bin of the radar is included in a lane. Echo signals received by the radar are then processed by a signal processing module and a parameter extraction module. The invention is particularly useful in automobile traffic, for calculation of the number of vehicles travelling in lanes, the vehicles speed and length, etc. The advantage of the this inventive system compared with previous systems is that it enables simultaneous checking of several traffic lanes.

摘要翻译： 本发明包括一种用于计算至少一个车辆交通检查参数的系统。 根据本发明的系统包括放置在要监视的车道侧的高点处的脉冲调制雷达。 雷达根据辐射图发射具有频率fo和宽度τ的脉冲。 辐射图在平面上是狭窄的，并且在高度上足够宽以覆盖要监视的所有通道，并且在高程和倾斜方向上倾斜，使得雷达的至少一个范围箱包括在车道中。 然后由信号处理模块和参数提取模块处理由雷达接收到的回波信号。 本发明在汽车交通中特别有用，用于计算车辆行驶的车辆数量，车辆速度和长度等。与先前系统相比，本发明的系统的优点是能够同时检查几个行车道。