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Found 4 results

  1. I'm trying to have a little bit of fun on instant mission 8 Vs 8 on Caucasus. At least half of my AIM-7 doesn't guide on launch, even with target at 12 o'clock and 10Nm and prior STT lock. Am I the only one ? Edit: https://we.tl/t-INeJOsfNTy
  2. I dont see much a diffrence of Detecting, locking and firing of SA-2 against Tiger, Viper and Hornet Tacview-20220907-170302-DCS.zip.acmi Tacview-20220907-165846-DCS.zip.acmi Tacview-20220907-165406-DCS.zip.acmi
  3. Pretty much in the title. One of the questions that often enters my mind is how effective chaff is in real life. In DCS, its exclusive use is as a last ditch effort to break a lock specifically in or around the notch. IRL, it would appear to be much more versatile and longer lasting. I'd also like to pin a question to this request. It seems to me like chaff would work really well if dropped while fully defensive (flying away from the bandit) and losing altitude. Not only does the missile (or its host) have to contend with a look down scenario, but also a receding target with a trail of noisy microwave reflections. Is this the case, or is chaff still more effective in the notch?
  4. In DCS - ALL RADARs (Airborne/Ship/Ground) CANNOT BE AFFECTED BY CHAFF AT ALL, there is no ccm_k0 value in Lua code in any radar in game. CHAFF vulnerability factor ccm_k0 only present in missile Lua codes. Because of this, any radar in game will have you "locked" (not literally), except you notch him or fly out of its limits. - THIS IS WRONG! Because of various foil stripes length packed into single chaff, it has an effect on most of the radar frequency ranges and will affect both missiles (active or passive) and radars (search or tracking) - generating tracking errors or a radar break-lock. DOPPLER RADAR: Against Doppler radars, self-protection chaff is most effective when dispensed at or near the beam, relative to the threat radar. Doppler processing radars will continue to track the aircraft unless it also has a relative velocity of zero. This occurs when the aircraft is abeam the radar. Even Doppler radars can have problems with chaff, doppler effect during foil translation can generate inside of the could reflected radar waves with phase shift recognized by Doppler radar as high relative radial speed - which is not filtered out by doppler gate. Considering Chaff cloud as just falling cloud of metallic foils is very inaccurate assumption. SAM RADAR TRACK WHILE SCAN Chaff employed against a track-while-scan (TWS) radar is designed to put multiple targets, with an RCS greater than the aircraft, in the resolution cell of the horizontal and vertical radar beams. Since the tracking loop tracks the largest return, the TWS radar will automatically switch to the chaff. After dispensing chaff, the pilot can maneuver vertically or horizontally to move the aircraft out of the resolution cell. SAM TWS is not the same as airborne TWS, which also use Doppler filter to filter out most of chaff effects. In DCS some late cold war/modern SAM systems able to search while tracking multiple targets. CONICAL SCAN RADAR - very vulnerable to chaffs. Burst chaff dispensing, employed during the final phase of an engagement by air-to-air or surface-to-air weapons, can generate tracking errors or a radar break-lock. The most dominant factor in chaff effectiveness is the radar cross section of the chaff compared to the airplane at the time when airplane and chaff are in the same resolution cell (angular and range). Chaff cloud have largest RCS reflection when viewed from the side of flight direction and smallest from the front and aft. Aircraft lowest RCS reflections are roughly around 45° off the nose or tail of the aircraft. Aspect is important when developing self-protection maneuvering and chaff dispensing tactics against threat radars. Since the typical fighter aircraft RCS varies between 1 and 10 square meters, depending upon frequency and aspect, the RR-170 chaff cartridge should provide a sufficient RCS to mask the aircraft RCS. In DCS some active radar missiles and older SAM systems. MONOPULSE RADAR - also vulnerable to chaffs.Chaff employed against a monopulse radar is designed to put multiple targets in at least two of the tracking beams. This generates errors in the azimuth, elevation, and range tracking circuits. Multiple chaff targets continue to generate azimuth and elevation errors that can eventually generate a break-lock condition, as the radar transfers lock-on to the chaff. Chaff is most effective against monopulse radars when employed on the beam in order to create the maximum angular tracking error. In DCS some active radar missiles and late Cold War SAM systems. (some of above mentioned informations comes from "Electronic Warfare Fundamentals 2000" book, some from "Characteristics and experimental study of radar scattering foil")
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