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A Practical Calibration Method of Inertial Navigation System

An inertial navigation system and calibration technology, applied in the field of inertial navigation system calibration, achieves the effects of easy production, saving manpower and material resources, and permanent disassembly and assembly repeatability

Active Publication Date: 2015-08-12
TIANJIN NAVIGATION INSTR RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This not only takes more time to prepare for calibration, but also requires a lot of manpower and material resources to complete calibration.

Method used

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  • A Practical Calibration Method of Inertial Navigation System
  • A Practical Calibration Method of Inertial Navigation System
  • A Practical Calibration Method of Inertial Navigation System

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Embodiment Construction

[0027] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be noted that the embodiments are illustrative, not restrictive, and cannot limit the protection scope of the present invention.

[0028] A practical inertial navigation system calibration method includes the following steps:

[0029] ⑴. Install the transition device on the carrier base. The transition device is installed on the carrier when the equipment is first installed, and will not be disassembled later.

[0030] The transition device is composed of a base 1 and two positioning pins 2, both of which are mounted on the base, and the positioning pins are stainless steel positioning pins made of stainless steel.

[0031] The upper surface of the base has a horizontal installation reference for the inertial navigation system 5 and the L-shaped calibration bracket 3 in the calibration device. The accuracy of the reference surface can be d...

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Abstract

The invention relates to a practical inertial navigation system calibration method. The practical inertial navigation system calibration method comprises the following steps of 1, installing a transition device on a carrier base, 2, installing a calibration device on the transition device, and carrying out levelness and direction calibration of the transition device, and dismantling the calibration device after the levelness and direction calibration satisfies requirements, and 3, installing an inertial navigation system on the transition device so that inertial navigation system calibration is finished. The practical inertial navigation system calibration method has a reasonable design, simple processes and a wide application range, simplifies a calibration process, reduces calibration repeatability, improves work efficiency, and satisfies the installation demand of a mass of inertial navigation systems.

Description

technical field [0001] The invention relates to the calibration field of an inertial navigation system, in particular to a calibration design method for a laser strapdown inertial navigation system on a ship. Background technique [0002] With the development of inertial navigation technology, military ships and civilian ships rely more and more on inertial navigation systems. The installation of the inertial navigation system needs to be physically calibrated to make the level and orientation of the system itself consistent with the level and orientation of the carrier. However, when the inertial navigation system is replaced or the system is disassembled again, the original datum state may be destroyed, and the horizontal and azimuth must be recalibrated. [0003] Calibration generally requires the carrier to stop running and be at a stable level. If the carrier is a surface or underwater vessel, it is also required to be in a pier state. This not only takes more time t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00
Inventor 杨盛林张崇猛
Owner TIANJIN NAVIGATION INSTR RES INST
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