星箭分离前后外测数据的联合定轨技术

Joint Orbit Determination by Outer-trajectory Measurement Data before and after Satellite-rocket Separation

为了使航天测控中星箭分离后得到的数据能够在定轨时获得应用,提出了一种修正方法。该方法利用动量守恒原理对星箭分离后的数据进行修正,使之与分离前的数据保持一致,从而能在定轨时获得运用。仿真计算和实际运用结果表明,该方法能够有效地提高初轨确定的精度。

To use the data after separation of satellite and rocket in the process of calculating orbit,a correction method is proposed. The method is based on conservation of momentum to correct the data after separation of satellite and rocket. And the corrected data is consistent with the data before separation of satellite and rocket, so the corrected data can be used to calculate orbit. The calculation results show that the joint orbit determination method can effectively improve the precision of satellite initial orbit determination.