Re: Drones ground flights at Gatwick
If they can find out what frequency the ground station is transmitting on and what the signal looks like on the spectrum display that's their best bet. Pretty much the RF equivalent of a ballistics analysis.
Not sure that any of those off the shelf drone control radio systems are frequency agile like a military comms terminal would be but the transmitters in 2.4GHz and 5GHz type approved systems are very low powered.
The systems which operate on lower frequencies are far more powerful, travel for longer distances and are not as susceptible to interference by obstacles etc. There would be far more likelihood of being able to triangulate this type of signal.
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