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Method for calculating azimuth gyro scale under platform inertial navigation dynamic conditions

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: 2016-03-02
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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  • Method for calculating azimuth gyro scale under platform inertial navigation dynamic conditions
  • Method for calculating azimuth gyro scale under platform inertial navigation dynamic conditions
  • Method for calculating azimuth gyro scale under platform inertial navigation dynamic conditions

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Embodiment Construction

[0019] The present invention will be further described in detail below with reference to the embodiments of the accompanying drawings.

[0020] The invention relates to a method for calculating azimuth gyro scaling based on dynamic conditions of platform inertial navigation. The method includes the following steps: firstly, the reference inertial navigation (marked as inertial navigation A) is in a good working state after startup and calibration, and the inertial navigation to be calibrated (marked as inertial navigation A) Execute the azimuth gyro calibration procedure for Inertial Navigation B); second, two sets of INS synchronously record heading data to obtain the heading change rate of Inertial Navigation B calibration process relative to Inertial Navigation A; the third is to use the relative heading changes of the two sets of INS rate, and obtain the inertial navigation B azimuth gyro scale.

[0021] In order to facilitate the description of the content of the present ...

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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 based on the dynamic conditions of a platform inertial navigation, and belongs to the field of inertial navigation. Background technique [0002] Inertial navigation system, referred to as inertial navigation, is the coordinate reference of various shipborne equipment. The attitude error of inertial navigation is the main error source that affects the accuracy of shipborne equipment. The main factors affecting the attitude angle accuracy of inertial navigation include gyro drift, accelerometer zero position error, gyro scale error and so on. [0003] Among the many parameters that need to be calibrated for inertial navigation, the acquisition conditions of the azimuth gyro scale are the most stringent, requiring the ship to be in the static condition of the dock pier. If the inertial navigation azimuth gyroscope fails at sea or at the dock, the precise position gyro scale cannot b...

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Application Information

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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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