In DSC/AIS search CH 70 beacon mode for the DF-500 system, how is the bearing determined?

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Multiple Choice

In DSC/AIS search CH 70 beacon mode for the DF-500 system, how is the bearing determined?

Explanation:
In DSC/AIS beacon mode the bearing is computed from known positions rather than measuring the RF signal direction. The DF-500 uses the GPS position of the beacon and the GPS position of the aircraft to determine the direction from the beacon to the aircraft. With both coordinates, it can calculate the azimuth (bearing) between the two points, giving a precise line-of-sight direction. This approach relies on GPS data for both ends, so it isn’t based on the antenna signal direction, nor on manual input or satellite triangulation. The bearing is simply the azimuth from the beacon’s GPS position to the aircraft’s GPS position.

In DSC/AIS beacon mode the bearing is computed from known positions rather than measuring the RF signal direction. The DF-500 uses the GPS position of the beacon and the GPS position of the aircraft to determine the direction from the beacon to the aircraft. With both coordinates, it can calculate the azimuth (bearing) between the two points, giving a precise line-of-sight direction.

This approach relies on GPS data for both ends, so it isn’t based on the antenna signal direction, nor on manual input or satellite triangulation. The bearing is simply the azimuth from the beacon’s GPS position to the aircraft’s GPS position.

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