GPS定位与水汽反演中对流层干延迟的订正研究  

Research on the correction of troposphere dry delay in GPS positioning and inversing the water vapor in atmosphere

作　　者：陈兆林[1] 张书毕[2] 冯华俊[3] 

机构地区：[1]国家海洋环境监测中心,辽宁大连116023 [2]中国矿业大学环境与测绘学院,江苏徐州221008 [3]有色金属矿产地质调查中心北京测绘院,北京100012

出　　处：《气象科学》2009年第4期527-530,共4页Journal of the Meteorological Sciences

基　　金：我国近海海洋综合调查与评价专项(908-01-QC02)

摘　　要：根据美国Shreveport地区及中国徐州地区2006年的气象探空资料计算了GPS测量中的大气干延迟,将其作为真值与目前常用的普适模型计算的延迟值进行对比,结果表明,目前常用的几种普适模型在美国Shreveport地区的改正效果要明显好于中国徐州地区,直接反映出普适模型更适合北美地区。利用徐州地区2000—2006年的探空数据计算了大气干延迟值,在此基础上,根据地面气象要素建立了徐州地区大气干延迟的局地订正模型。分析表明,局地订正模型的改正效果好于普适模型。Atmospheric dry delay in GPS surveying is calculated by using radiosonde data of 2006 at Shreveport in the USA and Xuzhou in China, which we treat as the real value and eontrast with the value calculated by using the universal models. The result shows that the universal models work better in Shreveport than in Xuzhou and give a straight image that the universal models are suitable for North American area. Atmospherie dry delay is calculated by using radiosonde data of 2000-2006. Based on the calculation and the surface meteorological data, the loeal atmospheric dry delay models for Xuzhou are established. By analyzing we can conclude that the accuracy of the local correction models is better than the universal models.

关 键 词：GPS水汽 干延迟 订正模型 精度 

分 类 号：P412.292[天文地球—大气科学及气象学]