摘要
介绍了GPS信号经过较平滑土地反射后信号特性的变化,建立起反射信号功率与土地湿度的对应关系,阐述了GPS-R接收机的构成,完成了在草地和裸地条件下的反射信号实时处理显示并存储。数据处理结果表明,利用所设计的GPS-R接收机处理出的归一化反射信号功率变化能够反映土地湿度变化的趋势。
The changes of signal characteristic after reflection from land are introduced in this paper. The relationship between the power of reflected signal and the soil moisture is established. And the structure GPS-R receiver is discussed afterwards. Two tests of the grassland and bare land have been finished. The processing result of reflected signal can output from the receiver in real time. Data analysis results show that normalized power of reflected signal can relate to the trend of soil moisture changes.
出处
《全球定位系统》
2009年第5期7-10,共4页
Gnss World of China
