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Angle testing and correcting method of GPS/INS combined locating navigation system

A navigation system and combined positioning technology, applied in satellite radio beacon positioning system, testing/calibration of speed/acceleration/shock measurement equipment, speed/acceleration/shock measurement, etc., can solve the problem of increased measurement error and achieve The effect of preventing small angle deviation, improving positioning and navigation accuracy, and reducing rotation angle detection error

Inactive Publication Date: 2009-06-03
江苏华科导航科技有限公司
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AI Technical Summary

Problems solved by technology

The angle error is generated by the above-mentioned gyroscope. Most of the existing gyroscopes are micro-mechanical gyroscopes. The technical problem caused by their mechanical characteristics is that the measurement error of the angle measurement will continue to increase as time goes on.

Method used

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  • Angle testing and correcting method of GPS/INS combined locating navigation system
  • Angle testing and correcting method of GPS/INS combined locating navigation system
  • Angle testing and correcting method of GPS/INS combined locating navigation system

Examples

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Embodiment 1

[0022] See figure 1 , the GPS / INS combined positioning and navigation system of the present embodiment is suitable for vehicles, ships, etc. that can move along a straight line, and includes: a CPU unit 1, an INS module 2, a GPS receiver 3 for receiving latitude and longitude signals, and a touch screen control unit 4.

[0023] The GPS receiver 3 includes: a GPS module 31 and a radio frequency amplifier 32 connected to the radio frequency signal input end of the GPS module 31; the signal input end of the radio frequency amplifier 32 is connected to the GPS antenna.

[0024] INS module 2 comprises: be used to generate the speed detection unit 21 of speed pulse signal and be used to generate the gyroscope unit 22 of mobile angle signal; The angle signal output terminal of gyroscope unit 22 is connected the angle signal input end of GPS module 31; Speed ​​detection The speed pulse signal output terminal of unit 21 is connected to the speed pulse signal input terminal of GPS modu...

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Abstract

This invention relates to one angle test correction method of GPS / INS combination position guide system, which comprises the following steps: using GPS receiver for correction in rotation angle signals generated by top device in INS module; when there is GPS signals, CPU unit tests the angle for rotation signal from GPS module through error correction to reduce rotation angle test error to solve the technique problem of INS system rotation angle error with time problem.

Description

technical field [0001] The invention relates to an angle detection and correction method of a GPS / INS combined positioning and navigation system. Background technique [0002] The mainstream technology in the car navigation market is the GPS (Global Position System) system. The GPS system calculates positioning information by receiving wireless signals sent by 24 satellites distributed in the sky. It has the advantages of global, all-weather, high precision, and real-time positioning. However, due to the straight-line propagation characteristics of wireless signals, its dynamic performance and anti-interference ability are poor. , When the GPS receiver is near a tunnel, tree shade or tall buildings, the satellite signal is blocked, which affects accurate positioning, or even fails to locate. [0003] The INS (Inertial Navigation System) system has autonomous navigation capabilities, can independently provide positioning and navigation information such as carrier attitude, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00G01C21/28G01C21/18G01S5/14G01P21/02G01S19/49
Inventor 秦春达姜加伟
Owner 江苏华科导航科技有限公司
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