ground echo meaning in English

地面回波。

Chapter 2 deals with the ground echo signal of sar , and establishes the signal models of static target and moving target
第二章研究了合成孔径雷达回波信号,建立了静止目标和运动目标的回波模型。
Chapter 3 studies the false target jamming . jamming signal generation formula is proposed by the investigation of simultaneous ground echoes of two different point targets in radar beam . comprehensive research about the characteristics of jamming signal is made , and raw data is used in simulation
第三章对虚假图像干扰进行了研究,通过对雷达波束内两个不同的点目标在同一时刻的回波信号进行的分析比较,推导了干扰信号的生成公式,对干扰信号的特征作了详细的分析,并结合实测数据做了仿真实验。