无线电指向标

无线电指向标

1

海面多路径效应对舰载雷达探测低空目标的影响海空两用无线电指向标

Sea Surface Multi-channel Footpath Effect Deal with the Influence of Low-altitude Target to the Shipboard Radar
2

相移全向无线电指向标

Phase-shift omnidirectional radio range
3

沿海港口和重要水域建成交管系统17个，新建、改造航标300余座，并建成无线电指向标差分全球定位系统20个台站，基本实现了航标成链的目标。

Some17traffic-control systems have been established , 300 navigation aids set up or upgraded , and20rbn-dgps stations in coastal ports and crucial waters established , basically achieving the target for completing the nation 's navigation aid chains .