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Error compensation method for strapdown inertial navigation, and navigation system

A strapdown inertial navigation and error compensation technology, applied in the field of inertial navigation, can solve problems such as scroll error, paddle error, and cone error

Active Publication Date: 2020-10-23
重庆青年职业技术学院
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AI Technical Summary

Problems solved by technology

In this case, the attitude calculation and navigation calculation can only be completed by solving the difference equation, and when the vehicle has linear vibration and angular vibration, or the vehicle is maneuvering, there will be a coning error in the attitude calculation. There will be a paddle error in the speed solution and a scroll error in the position solution

Method used

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  • Error compensation method for strapdown inertial navigation, and navigation system
  • Error compensation method for strapdown inertial navigation, and navigation system
  • Error compensation method for strapdown inertial navigation, and navigation system

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Embodiment Construction

[0079] The description and the claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. As mentioned throughout the specification and claims, "comprising" is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0080] Unless otherwise specified, the method steps in the claims and description do not represent the order, but only include the steps, and the method steps that change the order on this basis all fall within the protection scope of the present application.

[0081] The system is mainly composed of three laser gyroscopes, three accelerometers, a signal processor, a perimeter steady flow controller, a jitter controller, a timing module, an external odome...

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Abstract

The invention discloses a vehicle-mounted strapdown inertial navigation system. The system is a core component composed of a laser gyro, an accelerometer, a barometric altimeter, a speedometer and other sensors and provides high-precision autonomous positioning and directional guidance. The system is good in concealment, the working environment is not disturbed and influenced by the outside and isnot limited by meteorological conditions, the system has the advantages of autonomy, concealment, real-time performance, all-weather performance and the like, and accurate position coordinates, azimuth angles, roll angles, pitch angles, speeds, travelled distances, heights and other information of carriers can be provided in real time. The system is suitable for navigation, guidance, positioningand orientation, attitude control and the like of various carriers.

Description

technical field [0001] The present invention relates to the technical field of inertial navigation, more specifically, it relates to a kind of error compensation method and navigation system of strapdown inertial navigation. Background technique [0002] The inertial navigation system is an autonomous navigation system that does not rely on any external information and does not radiate energy to the outside. It has the characteristics of good concealment and can work in various complex environments such as air, ground, and underwater. The main points are There are two types of platform inertial navigation systems and strapdown inertial navigation systems. The strapdown inertial navigation system is developed on the basis of the platform inertial navigation system. It is a frameless system consisting of three rate gyroscopes, three linear accelerometers and a microcomputer. The gyroscope and accelerometer are fixed directly on the carrier. The gyroscope and accelerometer ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00G01C21/16G01C19/66G01S19/47G01C5/06G01C22/00
CPCG01C25/005G01C21/165G01C19/66G01S19/47G01C5/06G01C22/00Y02T90/00
Inventor 王建中张富强尹丽莎张燕王元伟尹春松
Owner 重庆青年职业技术学院
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