考虑钟差修正的X射线脉冲星导航算法研究

Research on the Navigation Algorithm Based on XRay Pulsars with Consideration of Clock Error

基于X射线脉冲星的航天器自主导航依赖于精确时间的测量,因此星载时钟钟差对导航性能有不容忽视的影响。在原子钟钟差模型和航天器动力学模型基础上,提出一种考虑星载时钟钟差修正的脉冲星导航算法。仿真结果表明,该算法可以有效消除钟差的影响,保证了导航精度,研究结果对脉冲星导航的工程应用有一定的理论参考价值。

The essential of navigation is the accurate measure of time,so clock error is one of the most important factors which effect the navigation. By combining the model of the atomic clock error and orbital dynamics,a new navigation algorithm based on x-ray pulsars with consideration of clock error is proposed in this paper. Results show that the effect of the clock error in the navigation is well dealt by this algorithm,so the new algorithm is referable to the application of navigation based on x-ray pulsars.