Beeknight @ Wed Oct 21, 2020 1:57 pm 写道: 涨姿势了
楼上那个应当是更适合陆地上, 还有这个水上专用的 emergency position-indicating radiobeacon (EPIRB)
https://en.wikipedia.org/wiki/Emergency_position-indicating_radiobeacon_stationA transmission (from anywhere on earth!) is typically detected and processed in this manner:
The transmitter is activated, either automatically in a crash or after sinking, or manually by survivors of an emergency situation.
At least one satellite picks up the beacon's transmission.
The satellites transfer the beacon's signal to their respective ground control stations.
The ground stations process the signals and forward the data, including approximate location, to a national authority.
The national authority forwards the data to a rescue authority
The rescue authority uses its own receiving equipment afterwards to locate the beacon and commence its own rescue or recovery operations.
您看着办吧。
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