可拓评判方法在掩星定位及反演中的应用

APPLICATION OF EXTENT-TECH TO OCCULTATION LOCATIONING AND INVERSION

介绍可拓评判方法的原理以及在掩星定位及反演中的应用,并通过实际算例证明了不同高度角和几何分布对掩星卫星定位和反演精度的影响。试验结果表明,与常规方法相比,利用可拓评判方法选星后掩星定位,反演精度和稳定性均得到了显著提高。

This article introduces the principle of Extent-tech evaluation method and application to occultation locationing and inversion. The experiment proved that the different elevation angles and geometric distribution have influence on occultation satellite positioning and the accuracy of inversion. Compared with the conventional method, it shows that the occultation positionnning accuracy and stability of the inversion with this method has been signifi- cantly improved.