
	Where results make sense

Topic: Radar reflector

Related Topics

Doppler radar

synthetic aperture radar

X band radar

Radar astronomy

Royal Signals and Radar Establishment

semi active radar homing

weather radar

radar imaging

radar picket

Royal Radar Establishment

radar altimeter

Shuttle Radar Topography Mission

In the News (Fri 17 Feb 12)

EXECUTIVE POWER

Iran

ANALYSIS

Pakistan

Family compact

	Chuck Husick on BoatUScom
		Radar detects targets in a manner similar to the way we see things when using a flashlight in total darkness, when the only objects we can see are those illuminated by the flashlight's beam.
		Radar Detectors similar in function to those commonly used in cars to announce the presence of speed control radar are available for use on boats.
		Various forms of radar reflectors are available, ranging from seemingly simple corner reflectors made of three intersecting sheets of radar reflective material to complex reflector geometry's using varying forms of corner reflector or a Luneburg lens.
	www.boatus.com /husick/nd_radar.asp (1557 words)

	[No title]
		Terms Radar reflectors are described in terms of their Radar Cross Section (RCS) and their performance is measured in decibels (dB) relative to some reference, usually a 1 m² sphere.
		Radar reflector performance is a direct function of size, proportional to the fourth power of its linear size.
		Many radar units are not continually monitored but set to automatically sound an alarm if a target registers three consecutive "hits." One big hit won't alert the ship's crew that a smaller vessel is in the vicinity.
	www.tri-lens.com /practical_sailor.txt (1460 words)

	TriLens Radar Refectors Info
		Radar systems typically require a minimum of 3 consecutive "hits" or blips on a ship's radar before the radar reflector can be acquired as a target.
		Experts agree that the best radar reflector is the one that gives the highest radar cross-section and continuous coverage.
		Vessels fitted with these TriLens Reflectors could be instantly located on the search radar of rescue craft whereas they would be lucky to be seen with a visual search when weather conditions have deteriorated or in fogs or at night.
	www.buoys.com.au /trilensinfo.html (611 words)

	1995 Radar Reflector Test
		X-band radar operates at a frequency of approximately 9.4 GHz (9400 MHz), with a wavelength of 3.2 cm, while S-band operates at approximately 3 GHz, with a longer wavelength of 10 cm.
		Most radar reflectors are variations on the 3-sided corner reflector, also known as a corner cube or a trihedral reflector.
		As the trihedral reflector is rotated off this axis in any direction, the echo becomes weaker, and drops by half (-3 dB) at an angle of 12° to 20° from the axis of symmetry, depending on its specific shape (see fig.
	www.ussailing.org /safety/Studies/radar_reflector_test.htm (1718 words)

	The Fitting of Radar Reflectors on Small Vessels - # 04/1992 - Ship Safety Bulletin - Marine Safety (Site not responding. Last check: 2007-11-03)
		In restricted visibility, where radar and the exchange of sound signals are the only means of detection, it is important that small vessels use radar reflectors to indicate their presence to other vessels in the vicinity.
		Although it may not appear to the owner/operator that there is an obvious need for the carriage of this equipment, a marine surveyor may indicate that a radar reflector is essential for the safety of the vessel and its occupants, based on incidents where small vessels have escaped detection.
		Radar reflectors are relatively inexpensive and represent a modest investment when compared with the cost of a vessel, its equipment and the lives of those on board.
	www.tc.gc.ca /marinesafety/bulletins/1992/04_e.htm (852 words)

	Radar Reflector 2
		A first test was done with the major axis perpendicular to the radar beam, corresponding to a reflector mounted upright on a vessel with no angle of heel, and viewed from every angle around the vessel.
		A second test was done with the reflector secured at an angle to the pedestal, corresponding to a reflector mounted upright on a heeled sailboat while a ship steams a circle around it.
		For each radar band, the first column indicates the average Radar Cross Section (RCS) in square meters for the reflector, using the recommended RMS (Root Mean Square) average.
	www.ussailing.org /safety/Studies/radar_reflector_3.htm (1401 words)

	How Speed Trap Radar Works
		Mobile radar is a more complex radar setup where the officer is able to check the speeds of drivers while his patrol car is moving (or not moving).
		Due to it's cost and physical constraints, traffic radar is as not as infallible as you're told it is. In the late 1970's, a Florida TV station reported that police radar clocked a tree at 37 mph and a house at 28.
		Photo radar detectors also work, but because of the very low power of the radar, you better be smiling for the camera by the time your detector goes off, because it got you.
	www.tipmra.com /new_tipmra/how_Speed_Trap_Radar_works.htm (4989 words)

	Ocean Navigator Online - Avoiding stealth
		A radar reflector must be made of a material that is opaque at the frequency of the radar.
		An effective radar reflector must be able to present a significant RCS regardless of the direction from which it is illuminated by a searching radar signal.
		One answer to the need for satisfactory reflector operation over a wide and ever-changing range of incident angles is the use of multiple corner reflectors, typified by the familiar radar reflectors.
	www.oceannavigator.com /article.php?a=671 (2712 words)

	Big Dot Radar Reflectors - Radar Relectors are important to marine safety, learn why Big Dot can help (Site not responding. Last check: 2007-11-03)
		During conditions of limited visibility (including night), RADAR is the prime method of "seeing" and the radar echo from your boat is how you are "seen".
		Radar principles are commonly understood and therefore we won't go into the details, but basically your boat must reflect the radar signal directly back to the transmitting radar unit, and herein lies a problem.
		With a radar equipped boat in a fixed location, and a novice operator at the radar controls (a good operator can tune up and "read" marginal signals at a far greater distance), have each boat sail away until its echo is lost.
	www.bigdot.net /RadarReflector.html (614 words)

	Dictionary of Technical Terms for Aerospace Use - R
		The terms primary radar and secondary radar may be used when the return signals are, respectively, by reflection and by the transmission of a second signal as a result of triggering responder beacon by the incident signal.
		Radar range depends upon variables such as weather conditions, type of target, etc. Radar range, sense 2, is sometimes given a specific definition, e.g., the range at which the set is effective one-half of the time.
		pulse radar it is a function of the cross-section area of the beam of the antenna and the pulse length of the transmitted pulse.
	roland.grc.nasa.gov /~dglover/dictionary/r.html (10660 words)

	Sea-Me Crew Safety. Radar Target Enhancer. Why Active reflectors are better than Passive reflectors. Improve radar ...
		The Sea-me Radar Target Enhancer is an ACTIVE system which receives a radar signal, amplifies it and re-transmits it.
		Radar is the prime tool used by ships to see.
		Sea-me has a maximum radar cross section of 63sqm, some 6 times the current requirement for a passive radar reflector, and an average of 34sqm.
	www.sea-me.co.uk /about.html (409 words)

	Avmar Limited :: Suppliers of Marine Safety Equipment - Inflatable Radar Reflector
		The internal radar reflector is manufactured from a material which is extremely robust, flexible and has excellent reflecting properties.
		The reflector can be mounted on a three piece fibreglass pole which passes through the aerial aperture in the canopy and secured to the raft by a lanyard.
		An alternative method of fixing the reflector would be by means of a net system incorporated in the canopy design of the life raft.
	www.avmar.co.uk /radarreflector.htm (246 words)

	GLOSS'Y Q-R
		RADAR EQUATION - A mathematical expression for primary radar which, in its basic form, related radar parameters such as transmitter power, antenna gain, wavelength, effective echo area of the target, distance to the target, and receiver input power.
		RADAR RESOLUTION CELL (RRC) - A volume bounded by the antenna beamwidth, the width of the radar pulse and the bandwidth of the receiving filter in the radar.
		RADAR SHADOW - Absence of radar illumination because of an intervening reflecting or absorbing object; the shadow is manifested on the display by the absence of blips from targets in the shadow area.
	www.sew-lexicon.com /gloss_qr.htm (7445 words)

	Radar Reflectors
		$199.45 Echomax EM230 I Inflatable Radar Reflector Metax array with fluorescent yellow PVC case; folds down neatly and is an ideal addition to the grab bag for emergency use.
		$158.21 Echomax EM180 Radar Reflector Due to the enormous demand for an Echomax for smaller boats, Echomax are pleased to announce the availability of the NEW Echomax EM 180 Radar Reflector based on the prove...
		$264.12 Radar reflector for RIB - Echomax 230 Basemount The Echomax 230 Midi Basemount is the ideal radar reflector for frame mounting on the stern of RIB’s or on sports boats and has been fitted to RNLI insh...
	www.sailgb.com /c/radar_reflectors (500 words)

	Yachting and Boating World: Radar reflector
		Many reports suggest most reflectors are almost useless (wait for the howls of protest), with the possible exception being the aluminium tetrahedral mounted so as to catch rain.
		A local fishing boat was paid by the water company whose sewer outfall it marks to fit a temporary radar reflector on a post attatched with wire to the top of the damaged buoy until it could be repaired properly.
		He fixed a bog standard aluminium octahedral reflector as seen in any chandlers or boat jumble.Result was it showed up really well on radar until the buoy was taken away for repair.Now it shows up poorly again and locally is considered to be something of a hazard.
	www.ybw.com /forums/showflat.php?Number=329636&page= (1067 words)

	nautical, boating supply, marine supply, boating gear, sailing gear, sailing supply (Site not responding. Last check: 2007-11-03)
		Echomax Reflectors are constructed of a three stack array of laser cut aluminum enclosed in a glass fibre case.
		Echomax Reflectors are constructed of a two stack array of laser cut aluminum enclosed in a polyethylene case.
		Echomax Reflectors are constructed of a three stack array of laser cut aluminum enclosed in a polyethylene case.
	www.waterways.tv /products/subcategory.cfm?catID=179&mfrID=241&shmsg=1&list=all&subcatID=917&mfrall=1 (126 words)

	Radar Detector Flags
		The radar reflector flags install in seconds and assembly is not required.
		The radar reflector flags are made of advanced materials containing hundreds of 90 deg.
		Radar waves only need to hit a small area of the flag to cause the waves to amplify across and reflect from the entire surface.
	www.survivalinstinct.com /radrefflag.html (359 words)

	Radar Glossary
		Surveillance radar is used to detect targets within range of the radar.
		Pulse-compression radars make use of specific signal processing techniques to provide most of the advantages of extremely narrow pulses widths whilst remaining within the peak power limitations of the transmitter.
		(RHI) is a radar display that represents the height of the target on the vertical axis, and uses the horizontal axis of the RHI to represent the target range.
	www.argospress.com /Resources/radar (1368 words)

	Radar Reflectors - Boat Design Forums
		Location: Sarasota FL Often, a radar reflector is no more than three square sheets of metal all tack welded together like the corner of a box.
		Other types of reflectors can be a simple dipole arangement inside the focal point of a parabolic dish aimed at the radar transciever.
		Dave, you mentioned that the dimensions are somehow related to the frequency of the wave to be reflected.
	www.boatdesign.net /Forums/showthread.php?t=1285 (538 words)

	Trilens Radar Reflectors
		The TriLens Radar which is based on US Defence Department technology, reflects the signal back at all angles of rolling and pitching and is therefore the best radar reflecting device of its type available in the world.
		The TriLens Radar Reflector ensures that the radar signal from another boat to your boat is properly reflected and magnified so that you show up on the radar screen of the other vessel whatever the prevailing sea conditions.
		The Trilens reflector is made in three sizes to suit the size of your vessel and give you total piece of mind when traveling at sea in day or nightime.
	www.buoys.com.au /trilens.html (479 words)

	Maine Sea Grant - Radar Reflectors & Sea Kayak Visibility
		Radar reflectors are used by sailboats, motorized recreational craft, and working boats of all sizes to increase their potential appearance on the radar of other vessels; the more obvious the “return” on a radar screen, the more likely an attendant boat captain is to avoid collision.
		The purpose of this study was to review the effectiveness of a variety of commercial and homemade radar reflectors in increasing the visibility of sea kayaks on radar.
		Excel 16 KB For those interested in the details of the study set-up, this field data form was created to track 'hits' and 'misses' of reflector-equipped kayaks on a radar screen at various distances and settings.
	www.seagrant.umaine.edu /extension/coastcom/raref.htm (319 words)

	The Super Reflector -- A Radar Signal Enhancement Dish
		The Super Reflector is an 18 panel, welded aluminum dish, designed to reflect a radar signal directly back to the radar gun.
		When radar bounces off an object, the vast majority of the signal is either absorbed, passed through, or lost because it is reflected at odd angles.
		The Super Reflector is designed to capture a small area and return all of that radar energy directly back to the radar gun.
	www.stalkerradar.com /sports_reflect.shtml (421 words)

	Marinestore Chandlers: Radar Reflector 300x300x415 mm
		For best results, a radar reflector should be hoisted aloft as high as possible.
		Generally, bigger is better with radar reflectors : the reflection capacity is proportional to the reflector's size.
		Having a radar reflector on board is no substitute for an active watch.
	marinestore.co.uk /Merchant2/merchant.mvc?store_code=mrst&screen=PROD&product_code=PL16187 (221 words)

	Cruiser Log Crewfinder (yacht crew wanted) and Sailing Forums - Radar reflectors (Site not responding. Last check: 2007-11-03)
		Perhaps this is because his passage in Bass Straits was during active sea conditions, as big ship radars (on S band, as I recall; X band is used in port maneuvers) operate exclusively in a detection-percentage mode.
		The YM article demonstrates major differences in passive reflector performance, and the same conclusions were drawn by Belvoir Pubs in tests they've done for their magazines, including Practical Sailor.
		I will not be buying an expensive reflector or Sea-Me unit for my boat but will continue with the old fashioned, conventional (and cheap) reflector I have, mounted at the mast head and will definately be in the marked for an AIS transponder next season.
	www.cruiserlog.com /forums/topic.asp?TOPIC_ID=1028 (1591 words)

	Get the Facts on Radar Detectors
		Rocky Mountain Radar produces what is called a “passive radar scrambler”, but they call it a radar jammer, because the phrase “radar jammer” has for a long time implied a very effective device.
		When radar is triggered from a radar gun, it travels down the highway as an invisible wave and is referred to as the RF signal.
		When a claim is made about jamming to within 100 feet, (the "punch-through" distance where the radar gun overpowers the FM Chirp Signal of a Passive Scrambler), Rocky Mountain Radar should be able to prove it with written test reports and/or videos from Speed Measurement Labs (SML), the recognized authority in this field.
	www.1-radar-laser-jammers-detectors.com /support/dont-buy-passive/index.php (489 words)

	MOBRI Radar Reflector
		This compact multi-angular radar reflector is accepted by professional mariners around the world for maximum radar visibility in all kinds of weather.
		No matter what your vessel looks like, make sure you can be "seen" with Mobri's unique, low windage, noiseless, chafe-free and light-weight reflector.
		The M-3 has a flanged mount for power boats.
	www.landfallnavigation.com /mobrireflect.html (118 words)

	Maine Sea Grant - Radar Reflectors and Sea Kayaks Photo Gallery
		The Davis 153 aluminum radar reflector, a commercially available reflector often used by sailors and fishermen.
		The red tube in front of the cockpit was the only commercially available reflector designed specifically for sea kayaking that the study organizers were able to locate on the market.
		Considering that a boat traveling at 15 knots covers 1/4 nautical mile in 60 seconds, anything that can improve the visibility of small boats at sea is useful, including some forms of radar reflectors, effective VHF communications, and minimal traveling in high boat traffic areas.
	www.seagrant.umaine.edu /extension/coastcom/rarefgal.htm (643 words)

	Davis Sailing Equipment
		Frequency), based on optimum orientation between the radar and the reflector.
		Excellent as a back-up aboard larger vessels or primary reflector on smaller boats that might not normally carry a radar reflector.
		Reflector tape on the vane and tacking tabs make windex easy to read at night.
	www.cgedwards.com /Davis/dvs3.html (1171 words)

	Radar Reflectors - Electronics - May 2002 (Site not responding. Last check: 2007-11-03)
		To measure RCS, radar echo measurement equipment is calibrated to a precision steel sphere.
		Then a reflector is tested from every angle around the horizon, resulting in a plot of effective RCS in the form of an irregular circle.
		X-band is far and away the most common type of radar, and all SOLAS ships are required to carry it, but many also carry an S-band set, which they tend to use more in rainy conditions.
	www.powerandmotoryacht.com /electronics/0502electronics/index1.html (835 words)

Try your search on: Qwika (all wikis)