Radar Expert Explains How To Cheaply Add Radar To Your Own Hardware Projects 69
szczys writes "Gregory Charvat has been playing with and teaching others about entry-level radar concepts for a long time. Now he's sat down and explained how you can do it yourself inexpensively. He says, 'One enabling technology for Radar was the cathode ray tube (CRT), which facilitated a method of measuring the time delay between transmitted and received waveforms. ... Today, rather than using a CRT we can use high-speed digitizers. This offers the obvious advantage of applying signal processing to acquired data so that only moving targets are detected, tracking can be achieved, imaging, and a multitude of other modes. But for hobbyist and consumer projects we do not need this much power, range, and can not afford the cost. We need the ability to sense like a long range radar (detecting only moving targets, imaging, Doppler, signatures, etc) but at short ranges and at low costs.' Charvat then proceeds to walk through several options for the amatuer hardware hacker."
Re:My interest (Score:5, Interesting)
Dunno about where you live, but around here, police use LIDAR which is much more difficult to deal with for the would be detector/jammer.
LIDAR is pretty much impossible to detect until it's pointing right at you, at which point the best you can do is try to jam it long enough to slow down (which is pretty damn obvious when the cops LIDAR gun goes nuts as soon as he points it at your car).
Easier now, but not new to ham radio guys (Score:5, Interesting)
Re:My interest (Score:5, Interesting)
Problem is; most places in North America and I imagine Europe as well, already have laws on the books covering illegible or obscured registration tags and these covers often fall on the wrong side of the law. Personally, I'd rather get the speeding ticket than a missing/illegible plate ticket and would really really like to avoid any possible "obstruction of a police officer in the performance of his duties" charge.
Something else to consider; based on what seems to be the growing trend in the US: Do you want to get a speeding ticket which usually isn't a criminal act and only nets you a fine Or do you want to use a device whose (arguably) sole purpose is to break the law with impunity, leading to your car being declared as property used in the commission of a crime and confiscated? (while you get beaten half to death and charged with resisting arrest) If you speed, you are only in violation when you speed, but if you put a contraband plate cover on, you are in violation just parked on the street