Radiometric Terrain Correction Method Based on RPC Model for Polarimetric SAR Data

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 Range Doppler (RD) positioning model. However, solution this model has a high threshold ordinary remote sensing technicians. To solve problem, we propose method based rational polynomial coefficient (RPC) model, which widely used optical and simpler more practical than RD China’s GF-3 polarimetric were to verify proposed method. The experimental results showed that RPC effective can achieve better effects premise reducing complexity algorithm. effect be similar approach realize 4~5 dB radiation distortion 0.5 level.