ground surveillance radar

例句：

1. 1.The ground surveillance radar system is used to detect and track enemy aircraft in real-time.
   地面监视雷达系统用于实时探测和跟踪敌机。
2. 2. The ground surveillance radar helped the military to monitor the movements of troops in the field.
   地面监视雷达帮助军队监控部队在战场上的行动。
3. 3. The ground surveillance radar has become an essential tool for military reconnaissance.
   地面监视雷达已成为军事侦察的必备工具。