Fading Characteristics of Panchromatic Radar Backscatter from Selected Agricultural Targets
Fading Characteristics of Panchromatic Radar Backscatter from Selected Agricultural Targets
复制标题
选定农业目标的全色雷达后向散射的衰落特征
DOI：
10.1109/tge.1975.294402
复制
发表时间：
1973
期刊：
影响因子：
--
通讯作者：
Fawwaz Uloby
中科院分区：
文献类型：
--
作者：
T. Bush;Fawwaz Uloby
进行了一项实验，以确定来自四个农业目标的 9 GHz 反向散射雷达信号的衰落特性。目标包括两种不同的中耕作物（玉米和大豆）、连续的树冠（苜蓿）和裸地。在简要回顾了瑞利衰落后向散射的统计数据后，分析了数据处理方法和实验结果。与理论的比较表明，如果作物类型、土壤湿度条件和入射角正确地纳入目标模型，则与实验结果充分吻合。由于最近的研究表明，利用雷达绘制植被类型需要高精度，因此有必要尽可能多地获取目标衰落特征的先验知识。
An experiment was performed to determine the fading characteristics of backscattered radar signals from four agricultural targets at 9 GHz. The targets included two different row crops (corn and soybeans), a continuous canopy (alfalfa) and bare ground. After a short review of the statistics of Rayleigh fading backscatter, the data processing method and the results of the experiment are analyzed. Comparison with theory shows adequate agreement with the experimental results provided crop type, soil moisture condition and incidence angle are correctly incorporated in the target model. Because recent studies indicate that a high degree of precision is required for mapping vegetotion types with radar, it is necessary to acquire as much a priori knowledge of target fading characteristics as possible.