| 基于相对轨道根数计算的测绘卫星单点定位研究 |
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| 引用本文：赵峻天.基于相对轨道根数计算的测绘卫星单点定位研究[J].计算技术与自动化,2022,(4):46-51 |
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| 中文摘要:传统测绘卫星定位方法无法获取轨道全面信息，且传统方法忽略了多个测绘卫星并行航行情况，导致出现定位误差的问题。因此，提出一种基于相对轨道根数计算的测绘卫星单点定位方法。采用基于J2摄动模型的卫星轨道根数预测方法，预测卫星所在的轨道六根数，以此掌握卫星所在轨道信息；在此基础之上，通过基于相对轨道根数的卫星单点位置预测方法，预测卫星单点位置与卫星的运行速度，实现测绘卫星单点定位。实验结果验证：所提方法在多个测站位置的N、S、E三个方向的平均定位误差最大值为0.05 m。且所提方法预测近地卫星、中高度卫星、地球同步卫星所在轨道根数时，预测误差均方值均低于0.04；定位三种测绘卫星时，定位误差均方值最大值为0.02。数据表明所提方法可准确预测卫星位置信息，可作为测绘卫星定位的有效工具。 |
| 中文关键词:相对轨道根数计算 轨道信息 测绘卫星 单点定位 J2摄动模型 |
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| Research on Single Point Positioning of Surveying and Mapping Satellite Based on Relative Orbit Elements Calculation |
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| Abstract:In view of the traditional surveying and mapping satellite positioning method can not obtain the comprehensive orbit information, and the traditional method ignores the parallel navigation of multiple surveying and mapping satellites, leading to the positioning error. Therefore, a single point positioning method based on relative orbital elements is proposed. The method of satellite orbit elements prediction based on J2 perturbation model is used to predict the six elements of the satellite orbit, so as to grasp the orbit information of the satellite; On this basis, the single point position prediction method based on the relative orbital elements is used to predict the single point position and the running speed of the satellite, so as to realize the single point positioning of the surveying and mapping satellite. Experimental results show that the maximum average positioning error of the proposed method in N, S and E directions of multiple stations is 0.05m. The mean square error of the proposed method is less than 0.04 when it is used to predict the orbital elements of the near earth satellite, medium altitude satellite and geostationary satellite; When positioning three kinds of Surveying and mapping satellites, the maximum mean square value of positioning error is 0.02. The data show that the proposed method can accurately predict the satellite position information, and can be used as an effective tool for surveying and mapping satellite positioning. |
| keywords:relative orbital elements calculation orbit information mapping satellite single point positioning J2 perturbation model |
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