Law enforcement only please. Radar?
414347
NOPE!!!! All states allow officers to operate their radar or laser gun from inside or outside their car
254943
If they can arrest a person on private property, why would they not be able to radar a person on private property? Granted, if on private property they are likely focused on the matter in the area, perhaps a domestic dispute, but why would there be an expectation of privacy when you pass private property, upon which a police officer, is via a car? \n\nNow, if you mean the whole area, including the road, is private property, then I would assume no, as the presence of the police must be based on cause, which could be as simple as a neighbor calling in about suspicious noises. However, once on the property, the police's powers, while possibly limited if they are present because of a search warrant, still exist in terms of monitoring and apprehension. If a person is speeding on the property, unless that speeding, or other type of driving, is lawful on the property, the police would have reason to use a radar gun, or just to detain the person and possibly arrest him. At the very least, the matter is best understood by knowing what kind of driving may be performed on what kind of property.   \n\nIn either case, my strong suspicion is that they can in some cases.
794164
They have these things called CDs that contain music.  (A lot of really stupid people hang them from their rear-view mirror, thinking they prevent police radar from timing them or something.)\n\nYou should look for the Titanic soundtrack, by James Horner.
66296
It was pretty clear from the first answer but it was made a little bit clearer when put to me like this.  Have you heard a train horn coming toward you  then away from you?  The same horn at first sounds higher in frequency as the waves are compressing together in front of the train.  Then as it passes, goes away the same horn sounds lower in frequency because now the waves are stretching out, reaching us at a lower rate per second this is the doppler effect.\n \nDoppler is how the Police catch you speeding!  The early radar units were actually calibrated by the officers in the field using the motion of a common music tuning fork! (The back and forth motion of a certain note represented a certain specific MPH).\n\nDoppler really only refers to the change of frequency reflected from the target. If it is higher, then the target is coming toward the receiving antenna.  If it is lower in frequency, the target is going away from the receiving antenna.  The more the frequency shift, the faster the movement. \n\nConventional radar only shows the return signal, and does not measure its frequency shift from that which was transmitted.\n \nHope this helps you.
354367
You can Find it at NOAA's website which is www.weather.gov\n Then type in your zip code and there you have it. It Also tells you current radar.\n                          Enjoy
1172796
I'm guessing that you are asking because you are looking to purchase.  With that it mind here is some info and I hope it helps!\n\nIn early radar detectors:\nS - Band Radar : operates at 2 - 4 GHz\nX - Band Radar : operates at 10.50-10.55 GHz (Not accurate below 20MPH)\nK - Band Radar : operates at 24.05-24.25 GHz\n\nIn modern radar/ladar detectors:\nKa - Band : operates at 33.4 - 36.0 GHz (has 13 200-MHz channels, can operate in “hop” mode)\nLadar : uses light emitted at 904 nm (typical)\n\nAdvantages of Radar\n*Very flexible - can be used in a number of ways (Stationary mode, Moving mode, Two Directional mode)\n*Beam spread can incorporate many targets\n*Can often select fastest target or best reflection\n*Still very reliable\n\nRadar Disadvantages\n*Time - Radar can take up to 2 seconds to lock on\n*Radar has wide beam spread (50 ft diameter over 200 ft range)\n*Cannot track if deceleration is greater than one mph/second\n*Large targets close to radar can saturate receiver\n*Hand-held modulation can falsify readings\n*More interference sources\n\nLadar Advantages\n*Faster lock-on time (less than 1/3 second)\n*Very narrow beam spread (less than 6 ft over 2000 ft range)\n*Better ability to track decelerating targets\n*Typically mounted, and aimed with optical targeting device\n*Fewer sources of interference\n*Much more difficult to detect\n\nProblems with Ladar\n*Particles (dust, water) in air can limit range\n*Rounded surfaces, the colors black, blue, and violet are poor reflectors\n*Can be difficult to track target\n*Alignment can cause severe error\n*Extreme sunlight can be damaging\n\nConclusions\n*Ladar is, in the correct environment, better suited for speed detection\n*Ladar is not perfect, however\n*There is still room for Radar patrolling\n*Both could be used in concert to achieve maximum detection capabilities
410607
I would check with your local law enforcement agency.
23348
I drafted a pretty good LIDAR (laser-radar) speeding defense using these websites:\n\nhttp://www.helpigotaticket.com/proc/...\nhttp://www.tipmra.com/\nhttp://www.ticketassassin.com/\n\nThey give free advice for beating traffic tickets. I must caution you to verify the law contained in these websites. Hope this helps.
339706
I'm confused.  Some law enforcement aircraft have infared detection gear that senses gradient temperatures...the DEA for example uses this technology for interdicting drug shipments...is that what you're talking about or are you tallking about heat seeking weapons on police helicopters?
530175
don't think so, if you want the radar to penetrate more than a few inches
735838
"radar station is 160 miles"? what does that mean??\n\nIf you want people to answer math questions please provide the appropriate information.
993726
I don't know of anything commercially available, but I would be willing to bet that the military has something akin to this, perhaps for aircraft silhouette recognition by visual radar, as an I-F-F device.
397942
Air and Spaceborne Radar Systems - An Introduction \nBy: Lacomme, P.; Hardange, J-P.; Marchais, J-C.; Normant, E. © 2001 William Andrew Publishing/Noyes; This book focuses on the history, main principles, functions, modes, properties, and specific nature of modern airborne radar.\nhttp://www.knovel.com/knovel2/Toc.jsp?BookID=262\n\n\nRADAR SYSTEMS\nENGINEERING HANDBOOK\nhttps://ewhdbks.mugu.navy.mil/
849164
Most often, especially for low speed applications, it is a matrix of carbon fibers in a foam substrate.  At higher speeds, carbon fiber composites can be used, but radar waves can even be reflected from insulating materials (due to the change in dielectric constant between air and the material).  Many of these things reflect very poorly, though.  Coating the front of your car would not likely help with the local police radar -- however.
276567
Checked with a friend of mine he advises me you have LASER, some hand held portables  radar ka guns, and some units have Vascar a non radio in car computer based on officer observation.\n\nThis is connected to the vehicles speedometer through a sensor that feed both the computer and the radar and corrects the vehicle speed indicated for patrol car speed.\n\nAPS
1091686
A\n\n-Doppler radar measures Speed of the target\n-While Normal radar only measures the Range or position of target\n-Pulse Doppler Radar(PDR) measures Speed+location of target
811566
Always look for sites and/or groups/lists/forums that are operated by persons in the area.\n\nDon't get fooled by sites which slurp up data from others and post it as their own.\n\nAlso Radio Shack is CLUELESS! You purchase a unit from them and then get the real info you need. The guides included with RS and Uniden/Bearcat are OUTDATE and FLAT OUT WRONG in a LARGE portion of the data they contain.\n\nLook at:\nhttp://groups.yahoo.com/group/Socal-Scanner/\n\nhttp://groups.yahoo.com/group/CaliforniaOnlineScanning/\n\nOne, if not the BEST site for Southern CA is:\nhttp://www.freqofnature.com/\n\nCheck to see if they cover down to San Diego.\n\nAs for scanners and their use, owner ship and crimes.\n\nSeveral states have laws which prohibit use of scanners in vehicles and/or on your person (IN law prohibits carrying a scanner, unless its changes just recently.) FL is so draconian it could apply to the UPS truck delivering it to your home.\n\nUsing a scanner in the aid of crime is a federal offense, and theres ways to make state laws apply too. It rightfully is one.\n\nUsing one in your home, auto, or carrying for personal use is not an issue unless your local area has laws which prohibit such use in cars etc..\n\nTo listen to streaming scanners:\n\nSan Diego Police, Fire\nhttp://www.scansandiego.net/ (Video)\n\n\nSan Diego County Sheriff, Police, CHP & Fire\nhttp://www.scansandiego.net/ (Text Tags)\n\nSan Diego County RCS North Fire & VHF Fire\nhttp://www.kg6fwo.net/\n\nSan Diego County RCS North Fire\nhttp://www.mattlogic.com/\n\nSan Diego County RCS South Fire\nhttp://www.mattlogic.com/\n\nSan Diego County RCS South Fire\nhttp://www.firefeeds.com\n\nSan Diego County ATC\nhttp://www.scansandiego.net/ (Text Tags)\n\nLinks for other areas streaming:\n\nhttp://scannerfeeds.us\nhttp://livepolicescan.homeworldnet.com/\nhttp://www.scannerbuff.net/teamspeak/teamspeak.html\nhttp://www.incidentbroadcast.com/\nhttp://shoutcastscanners.notlong.com/\nhttp://www.police-scanner.info/index.htm\nhttp://www.publicsafetyfeeds.com/\nhttp://www.FireFeeds.com/\nhttp://easystream.us/\nhttp://www.LiveATC.net