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Calculation method of azimuth gyroscope based on dynamic conditions of platform inertial navigation

A dynamic condition and azimuth technology, applied in the field of inertial navigation, can solve the problems affecting the attitude accuracy of inertial navigation and the inability to obtain the azimuth gyro scale, etc.

Inactive Publication Date: 2018-01-12
UNIT 63680 OF PLA
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Problems solved by technology

If the inertial navigation azimuth gyro fails at sea or at the dock, the accurate azimuth gyro scale cannot be obtained, which will seriously affect the inertial navigation attitude accuracy

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  • Calculation method of azimuth gyroscope based on dynamic conditions of platform inertial navigation
  • Calculation method of azimuth gyroscope based on dynamic conditions of platform inertial navigation
  • Calculation method of azimuth gyroscope based on dynamic conditions of platform inertial navigation

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Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] The present invention relates to a method for calculating the azimuth gyroscope based on the dynamic conditions of the platform inertial navigation system. The method comprises the following steps: one is that the reference inertial navigation system (denoted as inertial navigation system A) is in a good working state after power-on calibration, and the inertial navigation system to be calibrated (denoted as Perform the azimuth gyro calibration procedure for inertial navigation B); second, the two sets of inertial navigation simultaneously record heading data, and obtain the heading change rate of inertial navigation B relative to inertial navigation A during the calibration process; third, use the relative heading change of two sets of inertial navigation rate, to obtain the inertial navigation B azimuth gyro scale.

[0021] To facilit...

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Abstract

The invention relates to a method for calculating an azimuth gyro scale under platform inertial navigation dynamic conditions. The method comprises 1, starting a standard inertial navigation system A, carrying out calibration so that the standard inertial navigation system A is in a good work state, and carrying out azimuth gyro scale calibration on an inertial navigation system B to be subjected to calibration, 2, synchronously recording course data by the two inertial navigation systems and acquiring a turning rate of the inertial navigation system B calibration relative to the inertial navigation system A, and 3, through the relative turning rate of the two inertial navigation systems, calculating an azimuth gyro scale of the inertial navigation system B. The method realizes accurate calibration of the inertial navigation azimuth gyro scale under ship dynamic conditions in harbor, solves the problem that platform inertial navigation azimuth gyro scales are acquired only under harsh conditions such as strict ship docking static state conditions, and can produce the dynamic calibration precision the same to the static calibration precision.

Description

technical field [0001] The invention relates to a method for calculating an azimuth gyro scale under dynamic conditions of platform inertial navigation, which belongs to the field of inertial navigation. Background technique [0002] Inertial navigation system, referred to as inertial navigation system, is the coordinate reference of various shipboard equipment. The attitude error of inertial navigation system is the main error source affecting the accuracy of shipboard equipment. The main factors affecting the inertial navigation attitude angle accuracy include gyro drift, accelerometer zero position error, gyro scale error, etc. [0003] Among the many parameters that need to be calibrated for inertial navigation, the acquisition condition of the azimuth gyro scale is the most stringent, and the ship needs to be in the static condition of the dock. If the inertial navigation azimuth gyro fails at sea or at the dock, the accurate azimuth gyro scale cannot be obtained, whic...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 赵李健潘良周海渊刘新明焦宏伟王前学杜鹏杨恒徐如祥
Owner UNIT 63680 OF PLA
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