free space radiation pattern

例句：

1. 1. The satellite's free-space radiation pattern is measured to determine its location.
   卫星的自由空间辐射模式被测量以确定其位置。
2. 2.The radar system uses a free-space radiation pattern to detect and track targets.
   雷达系统使用自由空间辐射模式来检测和跟踪目标。
3. 3.The engineer designed the antenna to have a specific free-space radiation pattern for optimal performance.
   工程师设计了天线，具有特定的自由空间辐射模式，以实现最佳性能。