Re: Passive three dimensional track of non-cooperative targetsthrough opportunistic use of global positioning system (GPS) andGLONASS signals

At 03:08 PM 11/24/01 +0800, F. Marc de Piolenc wrote:

Damn. If this really works it is a cheap countermeasure to low-observable ("stealth") technology. In effect, everybody within the GPS and/or GLONASS coverage area has his own multistatic radar available 7/24.

I wonder if this has actually been implemented...

I think this patent is a formalization of an effect reported maybe a year ago... where stealth aircraft were localized via cell base station data... in England IIRC