河海大学学报（自然科学版）
河海大學學報（自然科學版）
하해대학학보（자연과학판）
JOURNAL OF HOHAI UNIVERSITY (NATURAL SCIENCES)
2015年
3期
267-270
,共4页
GPS%大气可降水量%超快速星历%数值天气预报
GPS%大氣可降水量%超快速星歷%數值天氣預報
GPS%대기가강수량%초쾌속성력%수치천기예보
GPS%atmospheric precipitable water vapor%ultra-rapid ephemeris%numerical weather forecasting
为实时获取高时空分辨率的大气水汽场，基于地基GPS遥感大气水汽原理，结合香港CORS网的实测数据进行处理，根据大气可降水量( PWV)解算过程中超快速星历预报部分的时间跨度不同，设计了3个方案，并比较了各方案中最终精密星历、超快速星历和探空资料解算得到的PWV序列。结果表明，利用超快速星历估计PWV与最终精密星历结果一致，其精度满足气象预报等实时业务的要求。
為實時穫取高時空分辨率的大氣水汽場，基于地基GPS遙感大氣水汽原理，結閤香港CORS網的實測數據進行處理，根據大氣可降水量( PWV)解算過程中超快速星歷預報部分的時間跨度不同，設計瞭3箇方案，併比較瞭各方案中最終精密星歷、超快速星歷和探空資料解算得到的PWV序列。結果錶明，利用超快速星歷估計PWV與最終精密星歷結果一緻，其精度滿足氣象預報等實時業務的要求。
위실시획취고시공분변솔적대기수기장，기우지기GPS요감대기수기원리，결합향항CORS망적실측수거진행처리，근거대기가강수량( PWV)해산과정중초쾌속성력예보부분적시간과도불동，설계료3개방안，병비교료각방안중최종정밀성력、초쾌속성력화탐공자료해산득도적PWV서렬。결과표명，이용초쾌속성력고계PWV여최종정밀성력결과일치，기정도만족기상예보등실시업무적요구。
In order to obtain a real-time atmospheric water vapor field of high temporal and spatial resolution, based on the principle of remote sensing of atmospheric precipitable water vapor ( PWV) using a ground-based GPS, the observed data at certain stations in the Hong Kong CORS network were processed. According to the different time spans in calculating PWV with ultra-rapid ephemeris, three schemes were designed. In each scheme, PWV data calculated with final precise ephemeris, ultra-rapid ephemeris, and radiosonde data were compared. The results show that the predicted PWV data of the ultra-rapid ephemeris agree with those of the final precise ephemeris, and its accuracy satisfies the requirements of real-time service, such as weather forecasting.
