racon

1. 3, vessels with the AIS equipments can get comprehensive remark messages while receiving the AIS messages from remark, can long-distance detect and distinguish remark in all kinds of conditions, AIS AtoN may reinforce and replace the expensive Racon.
   装有AIS设备的船舶在接收航标设施上AIS信息的同时还收到综合航标信息，能在各种气象条件下远程探测和识别航标。因此，AIS航标有望补充和取代昂贵的雷达应答器。
2. The Design of an X-Band Racon Antenna with Rectangular Waveguide
   X波段矩形波导雷达信标天线的设计
3. Radar echoes include echoes of lands, islands, all kinds of moving targets, racon, SART and sea, etc.
   雷达回波包括陆地、岛屿回波，各种活动目标的回波，雷康、SART回波，海杂波等。

noun

1. a device that, on receiving radar signals, transmits coded signals in response to help navigators determine their position

   Synonym:    radar beacon