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Topic: Semi active radar homing


  
  Semi-active radar homing - Wikipedia, the free encyclopedia
In addition, the resolution of a radar is strongly related to the physical size of the antenna, in the small nose cone of a missile there isn't enough room to provide the sort of accuracy needed for guidance.
Contrast this with beam riding systems, in which the radar is pointed at the target and the missile keeps itself centered in the beam by listening to the signal at the rear of the missile body.
SARH missiles require the tracking radar to lock on to the target and then illuminate it for the entire duration of the missile's flight.
en.wikipedia.org /wiki/Semi-active_radar_homing   (619 words)

  
 All words on Semi-active radar homing
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Cheviot, as the family shook down together, became less afraid of dignity or jocularity; though she still knew that she was only on unguarded observations.
He was admirable; and the school was so proposing to send home little Dickie to begin his education there.
www.allwords.org /se/semi-active-radar-homing.html   (758 words)

  
 Track-via-missile - Wikpedia   (Site not responding. Last check: 2007-10-09)
As with semi-active homing missiles, a ground-based radar illuminates the target with radar energy which is then reflected, and similarly the missile picks up the energy being returned from the target.
Unlike an active radar homing missile, the missile does not alert the target to the fact that it is homing in on it by blasting it with radiation.
Modern phased-array radars, by virtue of their thin beams and low side lobes aren't even that easy to detect until they are illuminating the target.
www.bostoncoop.net /~tpryor/wiki/index.php?title=Track-via-missile   (638 words)

  
 Missile guidance   (Site not responding. Last check: 2007-10-09)
The semi-active radar homing is a crossover, homing passively on a reflected active radar signal generated by some other system.
active radar homing uses a radar on the missile to provide a guidance signal.
Infrared homing, a passive system in which heat generated by the target is detected and homed on.
www.worldhistory.com /wiki/M/Missile-guidance.htm   (814 words)

  
 Air Power Analysis: AIM-120 AMRAAM
Simply put, the small radar located in the missile is not powerful enough to detect and track a target over the ranges at which missile launch typically occurs.
Because the radar only activates during the terminal phase of the missile's flight, the target receives little warning.
Should the target attempt to protect itself with active jamming, the radar is capable of utilizing its medium-PRF mode to provide a "home-on-jam" function.
www.jolly-rogers.com /airpower/aim-120/avionics.html   (782 words)

  
 Hughes F-98 Falcon
The Falcon initially operated on the principle of semi-active radar homing, that is, it tracked and homed in on a radar echo reflected back from a target illuminated by a radar set carried in the aircraft that launched the missile.
Infrared homing was considered to be ineffective in head-on encounters, and since semi-active radar homing was less precise, it was decided that the best option was to increase the yield of the warhead.
Following launch, the ASG-18 radar of the F-108 was to be used for mid-course guidance and target illumination, and an infrared sensor was to be used for terminal homing.
home.att.net /~jbaugher1/f98.html   (1434 words)

  
 AIM-7 Sparrow - Wikpedia   (Site not responding. Last check: 2007-10-09)
The AIM-7 Sparrow is a medium-range semi-active radar homing air-to-air missile operated by the USAF, US Navy, and USMC as well as various allied air forces.
This was considered for the F5D Skylancer interceptor and for the abortive Avro Arrow, but the missile proved to be beyond the state of the art for the mid-1950s, and was cancelled before entering service.
As with other semi-active radar guided missiles, the missile does not generate radar signals, but instead homes in on reflected continuous-wave signals from the launch platform's radar.
www.bostoncoop.net /~tpryor/wiki/index.php?title=AIM-7_Sparrow   (733 words)

  
 Vympel R-27 - Wikipedia, the free encyclopedia
The R-27 is manufactured in both IR-homing (R-27T) and semi-active radar homing (R-27R) variants, somewhat similar to the French MBDA MICA weapon.
It arms the MiG-29 and Sukhoi Su-27, and some late-model MiG-23MLD aircraft were also adopted to carry it.
Semi-active radar homing with an upgraded seeker head, enabling it to engage targets flying at 3 m above the sea.
en.wikipedia.org /wiki/Vympel_R-27   (168 words)

  
 Re: Advantage of a semi-active radar guided missile? - Aircraftbargains Forums
I know that SARH missiles use the radar signals from the launching aircraft the guide themselves to the target, so the launching aircraft may be able to see through countermeasures, if you know what I mean.
However, an actively guided missile does not require the launching aircraft to maintain a lock until impact.
But in using a SARH missile it seems that the launching aircraft's radar could give the missile a "second chance" by directing the missile back to the correct target.
www.aircraftbargains.com /forums/PrintPost.aspx?PostID=2461   (318 words)

  
 Semi-active radar homing - Freepedia   (Site not responding. Last check: 2007-10-09)
Early SARH systems typically required the tracking radar to continually point at the target, known as "lock on".
However advances in the electronics in both the missile tracking systems and the radars have largely eliminated this in modern systems.
A number of additional systems are then used to "fine tune" the guidance, including additional information coded in the radar signal (phase angle for instance) and typically some sort of proximity fuse and often even a terminal guidance system.
en.freepedia.org /SARH.html   (428 words)

  
 [No title]
Because they home on radar energy reflected from their targets, semi-active radar homing (SARH) missiles like Sparrow or SkyFlash required that their targets should be constantly ‘illuminated’ by the launch aircraft’s continuous wave (or later pulse Doppler) radar.
This meant that the missile used a small on-board radar to home onto the target in the final stages of flight.
The weapon could use traditional semi-active radar homing to get to this point, though a missile combining SARH mid-course guidance with active radar terminal homing would share many of the same disadvantages as a traditional semi-active missile.
www.ukdf.org.uk /millibrief/M45.doc   (1776 words)

  
 Weapon Guidance Systems
Many ARH weapons have a home on jam function which means that when jammed, the weapon will head for the jamming signal and target that.
This is normally used to track on radar transmitters but can be used to home in on radio, microwave, and other similar signals as well.
The weaknesses of this system is that it can be fooled by chaff, can be jammed by radar jamming, has minuses to targets that have radar stealth, most sensors will pick up the radar beam, and target must be in a direct line with the director (no over the horizon targeting).
www.geocities.com /TimesSquare/8976/weapguid.htm   (1988 words)

  
 TWA Flight 800: SHOOTDOWNS   (Site not responding. Last check: 2007-10-09)
The investigation continues to be active and ongoing at this time, more than a decade and a half after the accident.An article describing and showing some of his work on this investigation appears elsewhere within TWA 800 CASE FILES.
Di Stefano's conclusion that the Itavia DC-9 was struck by two missiles of the Semi-Active Radar Homing type.
It does appear from the angles of approach by missiles to accomplish damage consistent to that shown by the wreckage mock-up and also by other means that missiles of the Semi Active Radar Homing (SARH) type were involved.
www.whatreallyhappened.com /RANCHO/CRASH/TWA/MORE_DOWN/dc9analysis.html   (304 words)

  
 SWOD Series
In April 1942, the attention turned towards radar guidance, and in June that year the development of a semi-active radar homing glide bomb based on the Robin airframe was begun.
Finally, there was the active radar guided Bat, which used a larger airframe of the Pelican configuration.
Pelican used a semi-active radar seeker, homing on radar reflections from the target which was illuminated by the AN/APS-2 radar of specially converted PV-1P patrol aircraft.
www.designation-systems.net /dusrm/app1/swod.html   (996 words)

  
 AIM-7 "Sparrow"
The Sparrow III uses semi-active radar homing guidance and either continuous wave or pulse doppler radars for target illumination.
Active radar homing variant produced by Douglas (with Bendix-Pacific and Westinghouse).
On-board guidance uses solid-state electronics and a doppler radar with conical scanning from a flat-plate aerial.
www.novia.net /~tomcat/AIM-7.html   (1007 words)

  
 KIROV (ORLAN) CLASS (TYPE 1144.1/1144.2) (CGN)   (Site not responding. Last check: 2007-10-09)
SAM: 12 SA-N-6 Grumble (Rif) vertical launchers (Nakhimov); 8 rounds per launcher; command guidance; semi-active radar homing to 100 km (54 n miles); warhead 90 kg (or nuclear?); altitude 27,432 m (90,000 ft); 96 missiles.
Velikiy has a Tomb Stone fire-control radar instead of the forward Top Dome for SA-N-20 which is a maritime variant of SA-10C.
There are still some equipment deficiencies particularly in fire-control radars which are fitted for but not with.
www.janes.com /defence/naval_forces/news/jfs/jfs000908_2_n.shtml   (905 words)

  
 Welcome To: JimClonts.Com / Jim Clonts
Continuous Wave radar - a radar beam that transmits continuously.
Deception Jamming - a form of radar jamming whereby the enemy is fed misleading or incorrect information as to the range, location or number of enemy aircraft
Pulse Doppler Radar - radar which uses the Doppler shift to determine location, speed and direction of a target.
www.jimclonts.com /gloss.htm   (1161 words)

  
 [No title]   (Site not responding. Last check: 2007-10-09)
However, The USAF later had second thoughts about giving an unmanned guided missile a fighter designation, and in 1950, the Hughes Falcon air-to-air missile was redesignated GAR-1, the GAR standing for *Guided Aircraft Rocket*.
The GAR-3A radar homer of 1959 had a new motor having boost/sustainer charges, improved radar homing guidance, provision for reduced susceptibility to enemy electronic countermeasures, and some changes in the airframe.
It was the primary armament for the F-106 interceptor of the Air Defense Command.
skunkworks.free.fr /aim4.DOC   (1926 words)

  
 FighterJets - Glossary S   (Site not responding. Last check: 2007-10-09)
The tactics of targeting and attacking enemy radar and SAM position.
Stealth - Common term applied to low observable technology and doctrine that makes an aircraft near invisible to radar, infrared or visual detection.
Stall - The sudden loss of lift due to the disruption of airflow over the wings.
www.milavia.net /users/fighterjets/glossary/letter_s.php   (291 words)

  
 Buk
Our passionate preoccupation with the sky, the stars, and a God somewhere in outer space is a homing impulse.
We are drawn back to where we came from.
Radars: 9S18 Kupol Tube Arm target acquisition radar, band, range km.
www.astronautix.com /lvs/buk.htm   (210 words)

  
 Phoenix OSFS Wiki: AIM-7E-4   (Site not responding. Last check: 2007-10-09)
The AIM-7 Sparrow is a Semi-Active Radar Homing air-to-air missile used by Western air forces during the past 30 years.
To address the combat failings of the design, the improved AIM-7E-2 was introduced in 1969 as a "dogfight missile." It had a shorter minimum range, clipped wings for higher maneuverability, improved autopilot, and better fuzing.
The AIM-7E-3 had further improved fuzing and higher reliability, and the AIM-7E-4 was specially adapted for use with high-power fighter radars like the F-14's AWG-9 and F-15’s APG-63.
phoenixosfs.org /wiki/wiki.pl?AIM-7E-4   (320 words)

  
 S-200
It was equipped with the first semi-active radar homing head.
Radars: 5N69 Big Back early warning radar, D band, range 500 km.
PRV-11 Side Net high frequency radar, E band, range 180 km.
www.astronautix.com /lvs/s200.htm   (284 words)

  
 Army Technology - The Aspide 2000 missile uses semi-active radar homing and has a range of 25km.
Army Technology - The Aspide 2000 missile uses semi-active radar homing and has a range of 25km.
The Aspide 2000 missile uses semi-active radar homing and has a range of 25km.
Copyright 2005 SPG Media Limited a subsidiary of SPG Media Group PLC
www.army-technology.com /projects/spada/spada2.html   (43 words)

  
 All words on Track-via-missile   (Site not responding. Last check: 2007-10-09)
Most modern SAM systems use the track-via-missile technique.
Although I shall be personally present much of the to form many new ones, I am sure you will be glad to learn that I the active manager of this Museum, Mr.
As he allow me to add that he is one to whose successful qualities as a often filled this building may well bear testimony.
www.allwords.org /tr/track-via-missile.html   (900 words)

  
 The page cannot be found   (Site not responding. Last check: 2007-10-09)
If you typed the page address in the Address bar, make sure that it is spelled correctly.
Open the home page, and then look for links to the information you want.
Click the Back button to try another link.
www.chinfo.navy.mil /navpalib/factfile/missiles/wep-stnd.html   (57 words)

  
 3D lwo AMRAAM AIM-120 semi
KEYWORDS: AIM-120 AMRAAM semi active radar homing missile
A very high detail model of an AIM-120 AMRAAM semi active radar homing missile
An AIM-120 AMRAAM, modelled from pictures taken at an airshow.
www.turbosquid.com /FullPreview/Index.cfm/ID/160625   (66 words)

  
 Surface Forces  RE:AEGIS/SM-2MR/ESSM vs PAAMS/Aster30/15 StrategyPage.com
Guidance: SM2-IIIB Inertial mid-course guidance, semi-active radar homing terminal guidance with infra-red secondary terminal guidance / Aster30 Intertial mid-course guidance, active radar homing terminal guidance.
Manoeuvrablity: SM2-IIIB Aerodynamic control (g not stated) / Aster30 Aerodynamic control and pyrotechnic control, 50+ g
Guidance: ESSM semi-active radar homing / Aster 15 mid-course inertial guidance, active radar homing terminal guidance
www.strategypage.com /messageboards/messages/8-4773.asp   (268 words)

  
 [No title]   (Site not responding. Last check: 2007-10-09)
Wing Span: 3 feet 6 inches (1.08 meters)
Guidance system: Semi-active radar homing (IR in Block IIIB)
Primary Function: Fleet and extended area air defense
en-cyclopedia.com /wiki/RIM-161_SM-3   (94 words)

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