低轨卫星的非差运动学精密定轨

ZERO-DIFFERENCE KINEMATIC PRECISE ORBIT DETERMINATION OF LOW EARTH ORBIT SATELLITE

总结了低轨卫星精密定轨的方法,分析了非差运动学定轨的原理、步骤和定轨精度的影响因素。并将非差运动学定轨与双差运动学、非差简化动力学、双差简化动力学定轨进行比较,发现它可以获得与其他定轨方法相近的精度,并且计算简单。

The approaches to precise orbit determination （POD） for satellites in Low Earth Orbit （LEO） were sumed up, and the theory, the steps and the factor influencing the accuracy of zero-difference kinematic POD were analyzed. Futhermore, by comparing the zero-difference kinematic orbit determination with double-difference kinematic, zero-difference reduced-dynamic and double-difference reduced-dynamic orbit determination it is found that with this method not only the accuracy close to that with other three methods can be attained, but also it is simple for computing.