Real-time course precision detection system and method for inertial navigation system for ships

Abstract

The invention provides a real-time course precision detection system and a real-time course precision detection method for an inertial navigation system for ships. The system comprises a ship differential global positioning system unit 1, an electro-optic theodolite unit 2, an attitude information interface unit 3, a target unit 4 and a data acquisition processing unit 5, wherein the ship differential global positioning system unit 1 is used for guaranteeing time synchronization and acquiring accurate position information of the electro-optic theodolite unit 2 and the target unit 4; the electro-optic theodolite unit 2 and the target unit 4 are used for measuring relative bearing of the ship; the attitude information interface unit 3 can acquire the attitude course information of the ship and calculates to obtain the course precision of inertial navigation equipment for ships through the data acquisition processing unit 5. According to the device and the method provided by the invention, real-time course precision measurement can be realized, the dynamic course precision measurement errors are reduced, and the measurement precision of the electro-optic theodolite is improved.

Description

technical field [0001] The invention relates to the field of performance detection of navigation instruments, in particular to a dynamic course accuracy detection system and detection method of marine inertial navigation equipment. Background technique [0002] Inertial navigation is based on the principle of Newton's inertia, using inertial components (gyroscopes, accelerometers) to measure the angular velocity and acceleration of the vehicle itself, and the attitude (heading angle, roll angle, pitch angle), speed and position are obtained through integration and calculation , so as to achieve the purpose of vehicle attitude determination and navigation positioning. The equipment that makes up the inertial navigation system is installed in the carrier. The work does not depend on external information, does not radiate energy to the outside world, and is not easily disturbed. It is an autonomous navigation system. [0003] After the inertial navigation equipment is installe...

AI Technical Summary

Problems solved by technology

[0004] It is relatively easy to measure high-precision static level and azimuth of optical fiber inertial navigation equipment on land, but it is very difficult to measure high-precision under dynamic conditions at sea

Although the current platform compass accuracy detection method adopted in the mooring navigation test process meets the relevant requirements of the national military standard and the requirements of the ship navigation test specification, but is restricted by the technical support conditions at that time, the quoted national military standard measurement method can only guarantee the heading (that is, the relative accuracy of the heading), the data collection is completely completed manually during the test, and the efficiency is low

Therefore, the current accuracy detection method cannot fully meet the high precision requirements of the combat weapon system for the true heading.

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