利用GPS测量建立区域可降水量模型  

Establishment of Local Precipitable Water Vapor Based on GPS Observation

作　　者：吕福祥 闫文林[2] 王坚[2] 

机构地区：[1]山西焦煤西山煤电集团公司地测处,山西太原030053 [2]中国矿业大学环境与测绘学院,江苏徐州221008

出　　处：《矿山测量》2009年第4期60-63,共4页Mine Surveying

基　　金：矿山CORS平台及其协同灾害监测;预警系统的关键理论及技术(50810076);中澳科技合作特别基金项目多源动态变形监测数据综合建模与预警研究(200802901516);教育部博士点基金(新教师)

摘　　要：利用GPS精密定位的过程可以精确的估算出大气中的可降水量(PWV)分布,PWV的评估是气象学中研究的重要内容之一。通过对欧洲8个IGS观测站GPS的观测数据进行精密定位,计算出各观测站不同历元的天顶延迟值,进而反演出测站天顶方向的水汽含量;通过曲面拟合模型和距离加权模型分别建立了区域的水汽含量模型,并对两个模型的精度进行了比较,得出两个模型在建立PWV的一致性,同时也得到了区域内的水汽在一天内不同时刻的含量和变化趋势,为降水预报提供一定的依据。Precipitable Water Vapor (PWV) estimating is the main job of meteorology. 8-station-data which were obtained from the IGS were processed, and zenith delay in different epoch was computed. Further more we completed the estimating value of the PWV. Two PWV models were established in different methods and it was proved that the two models have the same precision and change tendency. PWV models could be applied to the precipitation forecast while there were the mount and the tendency of precipitation.

关 键 词：精密定位 大气延迟 可降水量 曲面拟合 距离加权 

分 类 号：P228.4[天文地球—大地测量学与测量工程]