箭载GPS信号传播误差改正模型的选优  

Optimization of Rocket-borne GPS Signal Transmission Error Correction Models

作　　者：赵树强[1,2] 许爱华[2] 申蔚[1] 

机构地区：[1]西北工业大学,陕西西安710072 [2]西安卫星测控中心,陕西西安710043

出　　处：《飞行器测控学报》2006年第5期13-18,共6页Journal of Spacecraft TT&C Technology

摘　　要：误差修正模型是影响箭载GPS定位精度的关键问题之一。针对几种常用的GPS信号传播误差改正模型,探讨了各模型伪距延迟修正量的计算方法,分析和比较了各模型之间的差异,给出了组合误差修正模型的选优标准。实测数据计算结果表明，选优后的误差修正模型可有效提高目标定位精度。Error correction models are a key factor of influence for the positioning accuracy of GPS receivers onboard rockets. This paper explores computing method for pseudorange delay of typical GPS signal transmission error correction models, and optimization criteria are given for combinational error correction models based on analysis and comparison of difference between the models. Computation results with flight experiment data indicate that the error correction models effectively increase rocket positioning accuracy after optimization.

关 键 词：GPS测量 电离层延迟 对流层延迟 修正模型 选优 

分 类 号：P352.3[天文地球—空间物理学]