摘要
针对部分靶场经纬仪外测数据处理时常忽略折射率湿项对大气折射效应影响的现状,基于2019年环渤海某地区626组气象探空数据,利用射线描迹法计算了考虑折射率湿项和忽略折射率湿项两种情况下大气折射导致的经纬仪测高偏差。通过统计全年内不同仰角、不同高度等情况下折射率湿项对测高精度的影响,结果表明:折射率湿项是构成靶场经纬仪测高残差的一个重要误差源,对于目标高度测量有较高精度要求的试验任务,特别是在低仰角测量的情况,不能忽略折射率湿项的影响。
The influence of refractivity wet term on atmospheric refraction effect is often ignored during the measurement flight data processing of partial cinetheodolites.Based on the 626 sets of radiosonde data in a certain area around the Bohai Sea in 2019,the deviation of height measurement by theodolite caused by atmospheric refraction was calculated with and without the consideration of refractivity wet term by using the ray-tracing algorithm.According to the statistics of the influence of refractivity wet term on the accuracy of height measurement at different elevation angles and different heights throughout the year,the results show that the refractivity wet term is an important source of height measurement residual errors.For the test tasks with high precision requirements for target height measurement,especially in the case of low elevation angle measurement,the influence of the refractivity wet term cannot be ignored.
作者
韩先平
陈祥明
HAN Xianping;CHEN Xiangming(Unit 92941 of the PLA,Huludao 125000,China;Research Institute of Radiowave Propagation,Qingdao 266107,China)
出处
《应用光学》
CAS
北大核心
2024年第4期790-795,共6页
Journal of Applied Optics
基金
张明高院士工作室基金(A332103Y12)。
关键词
光波大气折射率
折射率湿项
折光修正
射线描迹
测高误差
optical wave atmospheric refractivity
refractivity wet term
optical wave refraction correction
ray tracing
height measurement error
