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Navigation system to help you see through the fog in the war


At present, the inertial navigation system can be divided into platform inertial navigation and strapdown inertial navigation two categories. In the strapdown inertial navigation before the popular, platform inertial navigation is the earliest application of the navigation industry, "the older generation", the main gyroscope and accelerometer installed on a stable platform to the platform coordinate system as a benchmark, "pulse" parameter. Flying in the ointment is that the platform inertial navigation system using mechanical stability platform, not only huge size, poor reliability, and maintenance costs are expensive, which greatly limits its living environment in the brutal battlefield environment. Massachusetts Institute of Technology in 1953 put into use platform inertial navigation system weighs close to 1 ton, and the precision system is not high. 70 years of the United States Air Force in the intercontinental missile on the installation of advanced inertial reference platform, although the system accuracy has improved, but "obesity" is still not effectively controlled.


In modern society, people use navigation in order to get the object's real-time orientation, attitude and speed information. Strapdown inertial navigation system directly to the inertial sensitive components installed on the object to be measured, with small size, high stability advantages, the information can be directly transported to the navigation computer for real-time attitude calculation, accurate carrier attitude, speed and latitude and longitude And other parameter information.


At the beginning of the strapdown inertial navigation system, people can not wait to be as "Apollo-13" landing spacecraft emergency backup device. In the event of an explosion in the service module, the system successfully guided the spacecraft to return to Earth orbit, this event has become a milestone in the development of strapdown inertial navigation system. Today, strapdown inertial navigation system has been widely used in aerospace, aviation, navigation and other military fields. With the development of technology and the reduction of related costs, many countries have expanded their applications to transportation, marine development, geodesy and exploration, robot control and many other industries.

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