本文選題：SAR　切入點：CCMP　出處：《遙感技術與應用》2016年06期 　論文類型：期刊論文

【摘要】：首先獲取覆蓋浙江省近海215景長時間序列多模式ASAR Level 1B數據,對獲取的ASAR數據進行幾何校正、輻射定標、極化比轉化、噪聲剔除后,將所有的影像統一重采樣得到1km×1km分辨單元的后向散射系數影像,嘗試利用CCMP風向作為SAR風速反演地球物理模式函數的風向初始場,對比目前國際上最常用的3種模式函數CMOD4、CMOD-IFR2和CMOD5的風速反演效果,將反演得到風速分別與CCMP插值風速和現場觀測氣象站點的風速進行對比,結果表明CCMP風向數據可作為SAR風速反演的風向初始場,其中結合CMOD4模式函數能夠得到較高精度的反演風速,由于CCMP數據有效時間長、覆蓋范圍廣、易于獲取,因此聯合CCMP風向有利于SAR近海風場反演的業(yè)務化應用。
[Abstract]:Firstly, the multimode ASAR Level 1B data covering 215 times offshore of Zhejiang Province are obtained. After geometric correction, radiometric calibration, polarization ratio conversion and noise elimination, the obtained ASAR data are calibrated. The backscattering coefficient images of 1km 脳 1km resolution unit are obtained by the unified resampling of all the images. The initial wind direction field of the geophysical model function is retrieved by using the CCMP wind direction as the SAR wind speed function. By comparing the results of wind speed inversion of CMOD4 CMOD-IFR2 and CMOD5, the wind speed obtained from the inversion is compared with that of CCMP interpolation wind speed and field observation meteorological station, respectively. The results show that the CCMP wind direction data can be used as the initial wind direction field of SAR wind speed inversion. The wind speed inversion can be obtained by combining the CMOD4 model function. Because of the long effective time and wide coverage of CCMP data, it is easy to obtain. Therefore, the combination of CCMP wind direction is beneficial to the operational application of SAR offshore wind field inversion.
【作者單位】： 浙江大學遙感與信息技術應用重點實驗室;杭州師范大學遙感與地球科學研究院;浙江省氣候中心;
【基金】：公益性行業(yè)(氣象)科研專項“多源測風資料融合技術研究及其在風能資源評估中的應用”(GYHY201306050) 浙江省科技計劃項目“近海面風場遙感協同反演方法研究及其應用”(2013C33068)
【分類號】：P714.2;P715.7

【參考文獻】

相關期刊論文 前3條

1 丁峗;;QuikSCAT/NCEP混合風場資料在海上風資源評估中的應用[J];水電與新能源;2011年02期

2 陳艷玲;黃s，

本文編號：1573118