基于GPS/BD机动参试设备角度标校方法研究

Research on Angle Calibration Method of Mobile Device Based on GPS/BD

针对机动参试的高精度测速设备标校存在的问题,利用GPS/BD卫星导航定位系统进行方向测量,具有设备简单、体积小、成本低、初始化时间短、精度高、无积累误差、不受地理条件影响等优点。设计了双天线GPS/BD系统进行雷达设备角度标校方法,在完成雷达角度标校的同时还可进行站址坐标的测量,降低了雷达设备对测量场地的要求,为实现真正意义上的机动参试奠定了基础。经某高精度测速设备试验表明,该方法标校精度与传统的方位标校方法相当,但标校效率提高,过程得以最大程度简化。

mIn order to solve the problems existing in angle calibration for the mobile speed measuring equipment, the orientation is measured by GPS/BD system, which has the advantages of simple device, small volume, low cost, short initialization time, high precision, no accumulation error, no geographical limitation, and so on. The way of angle calibration by the double antenna GPS/BD system is designed. In the completion of calibrating the angle of radar, while the station coordinate of the device can also be measured, which reduces the requirements of the device measurement site, and lays the foundation for doing trial task in the true sense in the mobile state. The test results of the mobile speed measuring device show that the accuary of this way is similar to that of the traditional way, and the calibration process is greatly simplified.