While most conventional airborne radars rely on some form of mechanically scanned antenna to transmit and receive signals, active electronically scanned array (AESA) sensors employ a fixed aperture.

• 当多数常规机载雷达依靠机械扫描天线收发信号的时候，有源电子扫描阵列（AESA）传感器却使用固定的孔径。