多站连续波跟踪雷达的测速定轨研究

连续波跟踪测量系统中，测距元通道通常存在较大的系统误差，并且有时出现个别测元数据质量较差，不能应用的情况，而其变化率及其多站测速系统提供的测速数据，精度较高，且测元多，是否可以利用测速元数据直接定轨，精度如何，在实际数据处理及应用中具有重要意义。文章对利用测速元进行航天飞行器定轨进行了详细的研究和大量的计算，获得了相应的理论和计算结果，通过比较，提出了利用样条函数非线性估计轨道的方法，并提供了具体的算法和相应的误差估计公式。理论分析和计算结果表明：该方法轨道估计精度高，成功地解决了测速定轨问题，在实际中有广泛的应用价值。

STUDY OF ORBIT DETERMINING BY USE OF RATE DATA OF CONTINUOUS WAVE RADAR

In continuous wave radar tracking system,system error of range data is usally large,while range rate data has high precision.How to use rate data to determine orbit of a spacecraft is important.The theoretical analysis and actual computation results show that orbit determining by use of rate datas point by points has very poor precision and isn't valuable.The detailed study is given and the new nonlinear spline function method of orbit determining by use of rate data is presented.The actual algorithm and the error propagation formula are given Results show that the new method has high precision.The actual application shows that the new method is successful and widely valuable.