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Calibration reminding method of aerial inertial navigation device

An inertial navigation and aviation technology, applied in the field of aviation inertial navigation devices, can solve the problems of high professional technical level requirements, high use and maintenance costs, and achieve the effect of shortening the maintenance cycle and reducing the requirements.

Inactive Publication Date: 2017-04-26
SHAANXI AIRCRAFT CORPORATION
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the use of a special external detection device, this method requires high use and maintenance costs, and requires a high level of professional skills for maintenance personnel. Maintenance personnel must undergo professional training before they are qualified to operate special equipment.

Method used

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  • Calibration reminding method of aerial inertial navigation device
  • Calibration reminding method of aerial inertial navigation device

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Experimental program
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Embodiment Construction

[0007] The present invention will be described in further detail with regard to specific implementation steps below:

[0008] Step 1, the inertial navigation device has a built-in satellite navigation receiver to realize satellite positioning, and regularly samples the satellite positioning data. Comparing the position calculated by the internal inertial channel of the inertial navigation device to calculate the longitude error and latitude error;

[0009] Step 2, the internal calculation software of the inertial navigation device calculates the radial error rate at each time according to the following formula,

[0010]

[0011] Among them, T is the navigation time, Δλ is the longitude error, Δφ is the latitude error, and φ is the latitude of satellite positioning;

[0012] Step 3: After the navigation is completed, the task radial error rate of a single navigation task is counted according to the radial error rate at each time, and the signal is transmitted to the display...

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Abstract

The invention belongs to the technical field of aerial inertial navigation devices, and relates to a calibration reminding method of an aerial inertial navigation device. The inertial navigation device samples satellite positioning data in a timing mode and compares the satellite positioning data with the position solved by an inertial channel formed in the inertial navigation device, the task radial error rate of a single navigation task is counted according to the radial error rates of all moments, and in case of the radial error rates of accumulated over eight tasks, accumulated circular probable errors are counted; when the task radial error rate or the accumulated circular probable errors exceed a specified value, a data bus transmits a calibration prompt to a display system for displaying. The problem that inertial navigation device navigation precision inspection needs to be completed by professional technical personnel through a professional external detection device is solved. The maintenance cost can be effectively controlled, the maintenance cycle can be shortened, and the requirements on the professional skill level of maintenance personnel can be lowered.

Description

technical field [0001] The invention belongs to the technical field of aviation inertial navigation devices, and relates to a calibration reminder method for aviation inertial navigation devices. Background technique [0002] The navigation accuracy inspection method of the inertial navigation device is mainly to check the navigation accuracy of the inertial navigation device by professional and technical personnel through a special external detection device, and judge whether it is greater than or equal to the specified value. Due to the use of a special external detection device in this method, the cost of use and maintenance is high, and the professional technical level of the maintenance personnel is relatively high. The maintenance personnel must undergo professional training before they have the qualification to operate the special equipment. Contents of the invention [0003] The technical problem solved by the invention is to provide an easy-to-operate calibration ...

Claims

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Application Information

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IPC IPC(8): G01C25/00G01C21/16
CPCG01C25/005G01C21/165
Inventor 刘俊杰陈健刘中平马韬邓爱国盛竟茹张卫侠马丽钱渊杨海燕司海峰梁凤霞安康夏亮
Owner SHAANXI AIRCRAFT CORPORATION
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