Xref: utzoo rec.autos.driving:5693 sci.electronics:21092 Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!pacbell.com!att!emory!athena.cs.uga.edu!mcovingt From: mcovingt@athena.cs.uga.edu (Michael A. Covington) Newsgroups: rec.autos.driving,sci.electronics Subject: Re: A New Approach to Radar Detection Message-ID: <1991Jun22.175649.8327@athena.cs.uga.edu> Date: 22 Jun 91 17:56:49 GMT References: <1991Jun20.161636.29034@rice.edu> <1991Jun20.162417.29255@rice.edu> Distribution: usa Organization: University of Georgia, Athens Lines: 22 The trouble with trying to detect police cars by listening to their radios is that the range is too good. There is *always* a police car close enough to you to give a strong signal. In fact there are always ten or twenty, unless you live in the Mojave Desert. Not only that, but signal strength is not a good indicator of proximity. Base stations put out a strong signal over a 20-mile radius. Cars put out a signal that varies depending on exactly what is between you and it. Finally, the police car standing still at a speed trap is not likely to be transmitting anything. -- ------------------------------------------------------- Michael A. Covington | Artificial Intelligence Programs The University of Georgia | Athens, GA 30602 U.S.A. -------------------------------------------------------