3 ms·
Side note: Same technique can be used to track a cell phone, except GSM frequencies are higher so the tracking distance is considerably shorter then a normal ra
by unnouinceput 7y ago
Side note: Same technique can be used to track a cell phone, except GSM frequencies are higher so the tracking distance is considerably shorter then a normal radar. But still good enough to do a city wide track of a person of interest.
- blattimwind 7y agoGSM frequencies (800, 1800 MHz) are about an order of magnitude lower than typical radar frequencies (~5-20 GHz).
- touisteur 7y agoMode S is 1030/1090 MHz, and L-band/S-band Primary Surveillance Radars ('real' radars) are still quite in use, especially in ground-based surveillance or Air Traffic Management. In fact 4G and wimax were threatening civilian radar bands.