GPS定位中4种对流层延迟修正模型适应性分析  

Applicability analysis of four sorts of troposphere delay error models in GPS positioning

作　　者：王新龙[1] 李亚峰[1] 

机构地区：[1]北京航空航天大学宇航学院,北京100191

出　　处：《电光与控制》2008年第11期5-9,18,共6页Electronics Optics & Control

基　　金：国家"八六三"高新技术项目;北京航空航天大学教学研究与实践项目(2008)

摘　　要：系统地分析了对流层延迟特性及其误差改正模型的精度及适应性。对GPS信号的对流层延迟误差产生机理进行了理论分析;对常用的4种对流层误差改正模型:霍普菲尔德(Hop-field)模型、萨斯塔莫宁(Saastamoinen)模型、Black模型及Egnos模型的特点及建模方法进行了详细论述;利用从GPS技术权威支持机构Crustal Dynamics Data Information System (CDDIS)得到的GPS对流层相关数据,定量分析了4种对流层误差改正模型的精确性及适用性条件。最后,为对流层延迟改正模型的选择给出了结论性的意见,所得结果为GPS精确定位时对流层延迟改正模型的选择提供了理论依据,具有工程应用参考价值。The characteristics and error correction model of troposphere delay are systematically investigated. The producing mechanism of troposphere delay error effecting on GPS signal was theoretically analyzed. The model peculiarity and modeling method of four commonly used troposphere delay correction models were discussed in detail, including Hopfield model, Saastamoinen model, Black model, and Egnos model. Utilizing the measurement data from Crustal Dynamics Data Information System （CDDIS） of the technical support institution for GPS, the accuracy and applicability of the four models were analyzed quantitatively. In the end, the conclusion was presented for selecting troposphere delay model, and the result may provide an academic reference for model selection in GPS accurate positioning, which are useful for practical engineering application.

关 键 词：GPS 定位误差 对流层延迟 修正模型 

分 类 号：V249.32[航空宇航科学与技术—飞行器设计] TN911.72[电子电信—通信与信息系统]