基于遥测PCM数据的多经纬仪网络同步引导

Network Synchronization Guidance of Multi-Theodolite Based On PCM Telemetry Data

为提高光电经纬仪利用率,充分发挥光电经纬仪的跟踪测量能力,减少人工跟踪所耗精力与失误率,提出一种基于遥测PCM数据的多站点光电经纬仪网络同步实时引导方法;将试验场现有不同型号光电经纬仪组网,建立与中心机、遥测监控处信息交联的网络结构,实现远程中心通讯控制;基于TCP实现PCM数据网络接收,采用三点截止法剔除粗差,组播发送数据至各站点,经坐标转换和滤波等处理解算出目标相对于各站点的方位、俯仰和距离值并发送至主控程序进行驱动,从而实现光电经纬仪的实时同步引导;实际应用结果表明,该方法可实施性强,数据准确,可靠,目标引导跟踪稳定,是实现多经纬仪组网测量的有效保证。

In order to improve the photoelectric theodolite utilization, give full play to the tracking and measuring ability of photoelectric theodolite, and reduce the energy and error rate of manual tracking, a real--time guidance method of multi--site photoelectric theodolite net- work synchronization based on telemetry PCM data is proposed. The different models of photoelectric theodolite network is set up in the test site, and the network structure of the central control unit and the telemetry monitoring unit is established to realize remote central communi- cation control~ The PCM data is received through the TCP network , three--point cut--off method is adopted to remove the gross error. Then send the data to each site, calculate the azimuth, pitch and distance values of the target with respect to each site by coordinate transfor mation and filtering, and send it to the master control program to drive, so as to realize real--time synchronization guidance of the photoelec- tric theodolite. The practical application results show that the method is feasible, accurate and reliable, and the target guidance and tracking is stable. It is an effective guarantee for multi--theodolite network measurement.