本文研究的是多顆氣象衛(wèi)星的多信息源的數(shù)據(jù)同化問(wèn)題，主要應(yīng)用于城市溫度分布狀況的監(jiān)測(cè)系統(tǒng)，在使用多源數(shù)據(jù)前，首先需要對(duì)數(shù)據(jù)進(jìn)行同化處理。同化的方法是對(duì)不同衛(wèi)星探測(cè)輻射值進(jìn)行直接對(duì)比，然后進(jìn)行投影變換幾何粗校正和圖像平移精校正，使多源數(shù)據(jù)在幾何位置上能得以高精度的配準(zhǔn)。設(shè)計(jì)了軟件流程，編寫了ActiveX 組件，同化工作在服務(wù)器端完成，使用ODBC 對(duì)數(shù)據(jù)庫(kù)存取，最后利用實(shí)際遙感數(shù)據(jù)對(duì)系統(tǒng)進(jìn)行了檢驗(yàn)，獲得的結(jié)果符合反演使用的要求。
關(guān)鍵詞: 遙感信息處理；數(shù)據(jù)同化；極軌氣象衛(wèi)星；多源數(shù)據(jù)
Designing for Thermal Infrared Data Assimilation of Meteorological Satellite CAO Jian-qing1,Hu Yong2,ZHU Shan-you2,YIN Qiu2, GONG Cai-lan2 (1.Shanghai Second Polytechnic University, Shanghai 201209,P.R.China 2. Shanghai Institute of Technical Physics, Shanghai 200083, P.R.China) Abstract: Assimilation of different satellite data is researched , it applies to the monitoring system of the urban temperature. The thermal infrared data from polar orbit meteorological satellites must be assimilated before they are used. The method of assimilation is direct comparison of radiance detected by different satellites, geometric rough correction by projection transform and precious correction by image transfer, it can register multi-sources data in geometric positions with higher precision. The procedure of the software is designed ,
ActiveX component is programmed. Assimilation code is executed in the server , accessing the database by ODBC. The system is tested by inputting actual remote sensing data finally, the result obtained accords with the demand.
Key words: Remote sensing information process; Data assimilation; Polar orbit meteorological satellite;Multi-sources data