LS is an abbreviation for a family of Chinese built precision-guided munitions (PGM) named Thunder Stone Precision Guided Bomb developed by China Aerospace Science and Technology Corporation (CASC). Alternatively, the LS PGB is also referred to by its gliding capability, as Thunder Stone Gliding Guided Bomb, or LS GGB. The guidance design of LS PGB is also adopted for another family of Chinese PGM, the YZ series, such as YZ-102 series. These PGMs are referred to in China as precision guided bombs (PGB).
A model of the LS-6 (right) on display at the Farnborough International Airshow 2010 along with a JF-17 Thunder
A model of the LS-6 precision-guided glide bomb. The folding wings on top of the bomb can be seen, as well as the tail kit, both coloured white.
Precision-guided munition
A precision-guided munition (PGM), also called a smart weapon, smart munition, or smart bomb, is a guided munition intended to hit a specific target, to minimize collateral damage and increase lethality against intended targets. During the Persian Gulf War guided munitions accounted for only 9% of weapons fired, but accounted for 75% of all successful hits. Despite guided weapons generally being used on more difficult targets, they were still 35 times more likely to destroy their targets per weapon dropped.
A laser-guided GBU-24 (BLU-109 warhead variant) strikes its target
BOLT-117, the world's first laser-guided bomb
Diagram showing the operation of a laser-guided ammunition round. From a CIA report, 1986.
A F-22 releases a JDAM from its center internal bay while flying at supersonic speed