CAJ | 학술논문

GNSS水汽探测通过获取卫星导航系统信号得到高时空分辨率的大气水汽资料,监测灾害性天气的产生和发展,对天气预报,气候研究和人工影响天气等有着重要的应用价值.本文利用北斗试验网的数据,结合探空观测,对北斗系统与GPS系统、探空系统之间进行详细的比较分析,对用北斗卫星进行水汽探测给出初步分析结果,并提出当前存在的问题.北斗系统与GPS系统及探空系统大气可降水量的探测结果较一致,很好的反应了大气可降水量的变化情况;北斗系统解算出的大气可降水量大于GPS系统,水汽含量较低时,两个系统的一致性更好;北斗系统水汽探测与探空标准的系统误差和标准偏差还较大,定位定轨模型有待优化,系统稳定性有待提高.
GNSS수기탐측통과획취위성도항계통신호득도고시공분변솔적대기수기자료,감측재해성천기적산생화발전,대천기예보,기후연구화인공영향천기등유착중요적응용개치.본문이용북두시험망적수거,결합탐공관측,대북두계통여GPS계통、탐공계통지간진행상세적비교분석,대용북두위성진행수기탐측급출초보분석결과,병제출당전존재적문제.북두계통여GPS계통급탐공계통대기가강수량적탐측결과교일치,흔호적반응료대기가강수량적변화정황;북두계통해산출적대기가강수량대우GPS계통,수기함량교저시,량개계통적일치성경호;북두계통수기탐측여탐공표준적계통오차화표준편차환교대,정위정궤모형유대우화,계통은정성유대제고.
The GNSS remote sensing water vapor detection got high spatial and temporal resolution atmospheric water vapor data by acquisition signal of satellite navigation system, monitoring the emergence and development of disastrous weather, which had important application value to the weather forecasting, climate research and artificial influence on weather.This paper used Beidou experimental network data, combined with the radiosonde observation, made detailed comparative analysis among Beidou, GPS and sounding system, gave the preliminary results of performance and accuracy of Beidou vapor detection, and put forward current problems.The result of PWV were consistent detected by Beidou, GPS and radiosonde, which well reflected the change regularity of PWV. PWV detected by Beidou was more than that of GPS. The two systems were more consistent when the PWV relatively lower. There were systematic errors and standard deviation between the water vapor detection by Beidou and radiosonde. Positioning and orbit determination model need to be optimized. The stability of the system need to be improved.