SGP4/SDP4模型应用于水平式光电跟踪设备的卫星轨道预报  

Applications of SGP4/SDP4 model in satellite orbit forecasting with horizontal photoelectric tracking equipment

作　　者：于洋[1,2] 郭立红[1] 李丹[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033 [2]中国科学院研究生部,北京100039

出　　处：《仪器仪表学报》2013年第6期1406-1412,共7页Chinese Journal of Scientific Instrument

摘　　要：针对以往水平式光电跟踪设备卫星轨道预报算法在卫星过天顶时由于方位角速度很快,导致的轨道预报精度差的问题,本文提出了一种基于SGP4/SDP4模型计算水平式卫星预报数据的算法,该算法直接计算卫星相对于水平式测量设备的轨道预报数据,相对于传统的先计算地平式设备的测站坐标,再进行坐标变换的算法,可有效地消除天顶引导误差。经过实验数据分析,其引导精度及稳定性可由4.5'提高到2.89″量级。可见,本文算法可有效地解决了卫星过天顶盲区的稳定跟踪问题,对高仰角卫星轨道预报具有更高的引导精度。In traditional satellite orbit forecasting algorithm with horizontal photoelectric tracking equipment, when the satellite has come closely to the vertex, the azimuth angle velocity is too fast, which leads to low orbit forecasting preci- sion. Aiming at this problem, a forecasting algorithm based on SGP4/SDP4 model is presented for calculating horizontal satellite forecasting data in this paper. This algorithm directly calculates the satellite orbit forecasting data relative to the horizontal measurement device. Compared with the traditional algorithm that calculates the observation station coordi- nates of the altitude azimuth form device firstly and then performs coordinate conversion, the new algorithm directly cal- culates the orbit forecasting data relative to the horizontal measurement device ,and can effectively eliminate the guide error of vertex. The experimental data analysis results show that the guiding precision and stability can be improved from 4.5＇to 2.89＂, which demonstrates that this algorithm can effectively solve the stable tracking problem when the sat- ellite moves across vertex blind region and also has higher guide precision for high elevation satellite orbit forecasting.

关 键 词：SGP4 SDP4模型 卫星预报 水平式 

分 类 号：V556[航空宇航科学与技术—人机与环境工程]