Analysis on Rice Backscatter Signatures in Time Domain: Comparison Between Radarsat-SAR Observation and Simulated Model Results
水稻时域后向散射特性分析：雷达卫星观测与模型模拟结果对比

The study simulates the radar backscatter coefficients of rice using developed microwave backscatter simulated model, and analyze the interaction between microwave electromagnetic wave and rice crown within a rice growth cycle. The emphasis is paid attention to the effects of rice physical parameters to the rice backscatter coefficient and the law as polarization variation. The data include the rice physical parameters measured in field and Radarsat-SAR remote sensing multi-temporal images acquired at the same time around Zhaoqing test site, Guangdong province.The comparison between Radarsat-SAR observation results and the backscatter simulated model results shows that rice backscatter characteristic varied as the physical parameters variation in the rice growth cycle, and that the variation law is different with the polarization modes. It provides theoretical support for multi-temporal and multi-polarization SAR remote sensing technology application to rice monitoring and production estimation.