Technology SITREP: How Russian engineering made the current operation in Syria possible
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Russian airstrikes are amazingly accurate even though the Russians are flying at over 5000m above ground, well out of reach of man portable air defense systems (MANPADS).
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They are even flying at night and in bad weather. This is even more puzzling considering that most of the work, at least in quantitative terms, is done by old SU-24s (first deployed in 1974) and SU-25 (first deployed in 1981).
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The original bombs of “WWII” technology were simple gravity bombs.
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with the increase in the speed of aircraft a one second delay in releasing a bomb could easily result in a miss by 600-800 meters
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some reinforced targets needed a direct hit (command posts, bridges, etc.). Two main type of guided bombs were developed: laser-guided and TV guided.
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The laser guided bomb work very simply: the aircraft (or ground spotter) “paints” the target with a laser beam
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The TV guided bomb also operates in a simple manner: the weapons system officers centers the bomb’s TV camera on the target and glides the bomb towards it
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The advent of satellite guidance ushered a new era for guided weapons. For the first time it became possible to use GPS (or, for the Russians, GLONASS) satellite signals to guide a bomb to a target.
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The Americans came up with an elegant solution: the JDAM. The Joint Direct Attack Munition kit was a way to convert “dumb” (non-guided) bombs into “smart” (guided) bombs by attaching a special kit to them

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The Russians came up with a much better solution.
Instead of mounting a kit on an old bomb and lose the kit every time, the Russians mounted a JDAM-like kit, but on the airplane.
Introducing the SVP-24:
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SVP stands for “специализированная вычислительная подсистема” or “special computing subsystem”. What this system does is that it constantly compares the position of the aircraft and the target (using the GLONASS satellite navigation system), it measures the environmental parameters (pressure, humidity, windspeed, speed, angle of attack, etc.). It can also receive additional information from datalinks from AWACs aircraft, ground stations, and other aircraft. The SVP-24 then computes an “envelope” (speed, altitude, course) inside which the dumb bombs are automatically released exactly at the precise moment when their unguided flight will bring them right over the target (with a 3-5m accuracy).
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every 30+ year old Russian “dumb” bomb can now be delivered by a 30+ year old Russian aircraft with the same precision as a brand new guided bomb delivered by a top of the line modern bomber
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pilot does not even have to worry about targeting anything. He just enters the target’s exact coordinates into his system, flies within a defined envelope and the bombs are automatically released for him. He can place his full attention on detecting any hostiles (aircraft, missiles, AA guns). And the best part of this all is that this system can be used in high altitude bombing runs, well over the 5000m altitude which MANPADs cannot reach. Finally, clouds, smoke, weather conditions or time of the day play no role in this whatsoever.
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since the SVP-24 is mounted on the aircraft and not the bomb, it can be reused as often as needed
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SVP-24 has now been confirmed to be mounted on the Russian SU-24s, SU-25s, Tu-22M3 “Backfires” and the Kamov Ka-50 and Ka-52 helicopters, the venerable MiG-27 and even the L-39 trainer
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