靶场光电经纬仪跟踪精度评估技术

Evaluation of the Tracking Accuracy of Photoelectric Theodolites for Test Ranges

靶场鉴定光测设备跟踪精度以往采用静态拍星和动态误差增量合成法,然而这种方法与执行飞行试验任务时的真实工作条件差别较大,鉴定的内容和结果都有一定的局限性。针对光电经纬仪设备的实际跟踪状态,以GPS(全球定位系统)测量信息作为比较标准,采用散度、偏度、精度来综合评估设备跟踪精度,通过对各通道测量数据进行散度、偏度分析,建立散度统计模型检验方法和偏度统计处理算法,系统评估与分析光测设备跟踪质量,实现对光电经纬仪跟踪精度的综合评估,并利用实际数据进行仿真计算和分析,仿真分析结果验证了其方法的可行性。

The tracking accuracy of optical measurement instruments for test ranges is traditionally validated with static star photogrammetry and dynamic error increment synthesis method. However, the approach has limitations in the contents and results of validation because of the drastic difference from actual flight test operation conditions. Using GPS （Global Positioning System） information as the standard of comparison, this paper establishes a model and algorithm of divergence and skewness for comprehensive and statistical evaluation of the tracking accuracy of optical measurement devices based on the actual tracking status of photoelectric theodolites following analysis of indexes such as divergence and biasness of observation data of different channels. Feasibility of the new method is veri- fied through simulation with actual data.