文献类型：期刊文献

英文题名：Radiometric Terrain Correction Method Based on RPC Model for Polarimetric SAR Data

作者：Zhao, Lei[1,2] Chen, Erxue[1,2] Li, Zengyuan[1,2] Fan, Yaxiong[1,2] Xu, Kunpeng[1,2]

第一作者：赵磊

通信作者：Chen, ER[1];Chen, ER[2]

机构：[1]Chinese Acad Forestry, Inst Forest Resource Informat Tech, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Key Lab Forestry Remote Sensing & Informat Syst, NFGA, Beijing 100091, Peoples R China

年份：2023

卷号：15

期号：7

外文期刊名：REMOTE SENSING

收录：;EI(收录号：20231714008182);Scopus(收录号：2-s2.0-85153241180);WOS:【SCI-EXPANDED(收录号:WOS:000969783500001)】；

基金：This study was financially supported by the Central Public-Interest Scientific Institution Basal Research Fund of China (grant No. CAFYBB2019SY026), and in part by the National Key Research and Development Program of China (grant No. 2021YFE0117700), and in part by the National Science and Technology Major Project of China's High Resolution Earth Observation System under grant 21-Y20B01-900119/22.

语种：英文

外文关键词：polarimetric SAR; radiometric terrain correction; rational polynomial coefficient; local geometry angles

摘要：Radiometric terrain correction (RTC) is an important preprocessing step for synthetic aperture radar (SAR) data application in mountainous areas. At present, the RTC processing of SAR depends on the Range Doppler (RD) positioning model. However, the solution of this model has a high threshold for ordinary remote sensing technicians. To solve this problem, we propose an RTC method based on the rational polynomial coefficient (RPC) model, which is widely used in optical remote sensing and is simpler and more practical than the RD model. China's GF-3 polarimetric SAR data were used to verify the proposed method. The experimental results showed that the RTC method based on RPC is effective and can achieve better correction effects on the premise of reducing the complexity of the algorithm. The correction effect based on the RPC model can be similar to that based on the RD model. The proposed approach can realize the correction of 4 similar to 5 dB terrain radiation distortion to a 0.5 dB level.