Precision guidance weapon

Inertial navigation system (INS) Precision guidance weapon

 Inertial technology is one of the most commonly used guidance technologies for missiles and guided missiles. Precision guidance weapons mainly include three categories: precision-guided missiles, precision guidance munitions, and underwater guided weapons. Inertial navigation is the most commonly used navigation technology for guided missiles and ammunition, while underwater guided weapons usually use acoustic self-guided technology, wake self-guided technology, and wire-guided technology. The main difference between precision-guided missiles and ammunition is that the missile relies on its own power system and guidance and control system to fly to the target, while the precision-guided missile itself has no power device, and the initial and middle sections of its trajectory need to be thrown by means of artillery, aircraft and other carriers.

    At present, inertial guidance has been widely assembled in air-to-air missiles, cruise missiles, and ballistic missiles. Strategic missiles, including land-based cruise missiles, intercontinental and long-range ballistic missiles, are usually equipped with high-precision electromechanical gyroscope inertial guidance or laser inertial guidance, and the unit price of the system is more than one million yuan; for short- and medium-range missiles, mainly supporting laser inertial guidance(RLG INS) or fiber Inertial navigation(FOG INS), the unit price of the system is around one million yuan. Thousand of our SNQ1 navigation grade quartz accelerometer were used on IMU which is mounted in moving vehicles, the range is several hundred kilometers.

    Guidance systems generally account for about 40% of missile costs. The ratio of the guidance system cost to the missile cost depends on the missile type and guidance function technology. However, with the development of guidance system technology, the guidance accuracy has been continuously improved, and the value ratio has also increased year by year. For example, defense system missiles, seekers, and control systems have more sophisticated structures due to their advanced technology, accounting for more than 40% of the total missile cost.

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