基于实测数据的大气密度模型修正方法  

Correcting Method of Atmosphere Density Model Based on Real Measuring Data

作　　者：杜凯[1] 王家松[1,2] 靳忠涛[1] 

机构地区：[1]中国西安卫星测控中心 [2]宇航动力学国家重点实验室

出　　处：《载人航天》2011年第3期15-21,共7页Manned Spaceflight

摘　　要：大气阻力摄动是低轨航天器的重要摄动源。实测大气密度比大气模型更能反映实际情况。基于实测大气密度的预报技术可以提高低轨航天器轨道预报精度。本文基于实测大气密度,给出一种通过旋转、平移、缩放实现模型和实测值贴合的模型修正方法,以提高预报精度,并以在轨600km高度卫星为例进行试算,证明该方法有效。Atmosphere resistance is one of the main sources of perturbing force for lower orbit satellites. The predicting technology based on real measuring atmosphere density may enhance the orbit predicting precision of lower orbit satellites. Based on the real measuring data, a model correcting method is put forward through circumrotating,translating,zooming in and out, so as to make the model data close to the real measured data, and to enhance the predicting precision. A 600km height satellite is taken as an example to verify that the method is effective.

关 键 词：大气密度 预报精度 摄动力 

分 类 号：V520.1[航空宇航科学与技术—人机与环境工程]