Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A low-cost and high-precision bd/mems fusion attitude measurement method

A measurement method and high-precision technology, applied in the field of navigation, can solve problems such as cumulative errors of gyroscopes and accelerometers, insufficient number of satellites, and difficulty in solving the ambiguity of the entire circle, and achieve the effect of strong performance and high precision

Active Publication Date: 2018-08-21
CHONGQING UNIV OF POSTS & TELECOMM
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method solves the problem that the satellite attitude measurement system cannot work normally due to insufficient number of observed satellites when the BD signal is blocked by obstacles, and solves the difficulty in solving the ambiguity of the whole circle caused by the signal loss of lock, and also solves the problem of The problem of cumulative error of gyroscope and accelerometer

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A low-cost and high-precision bd/mems fusion attitude measurement method
  • A low-cost and high-precision bd/mems fusion attitude measurement method
  • A low-cost and high-precision bd/mems fusion attitude measurement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0037] figure 1 It is a low-cost and high-precision BD / MEMS fusion attitude measurement flow chart of the present invention. As shown in the figure, in the present invention, the MEMS sensor module includes a three-axis accelerometer to output specific force information, a three-axis gyroscope to output angular velocity signals, and a three-axis magnetometer to output three-dimensional magnetic field strength. The BD attitude measurement module includes Two antennas and an integrated BD navigation and attitude measurement chip.

[0038] Step A1, data acquisition of MEMS inertial sensor module and BD receiver module.

[0039] Specifically, STM32 drives the MEMS inertial sensor and precisely controls the output frequency of the sensor through a timer. The two sensor data collected each time are encapsulated into a frame of data, in which the frame ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a low-cost high-precision BD / MEMS integration attitude measurement method, and belongs to the technical field of navigation. An MEMS inertia sensor module comprises a triaxial accelerometer, a triaxial gyroscope, and a triaxial magnetometer. A BD receiver module comprises two antennas and one integrated BD navigation chip. The method comprises the steps: solving a carrier attitude angle according to the information of an MEMS inertia sensor; solving the ambiguity of the whole cycle through the assistance of an AFM (ambiguity function method); and finally achieving the BD / MEMS integration attitude measurement through an expanded Kalman filter. The method solves a problem that a satellite attitude system cannot work normally under the condition that a BD signal is sheltered by an obstacle because of insufficient satellites, overcomes the difficulty, caused by signal lock loss, in solving the ambiguity of the whole cycle, and also solves a problem of accumulated errors of the gyroscope and the accelerometer. Compared with a conventional method, the method is higher in instantaneity and reliability and is higher in precision.

Description

Technical field [0001] The invention belongs to the technical field of navigation, and relates to a low-cost and high-precision BD / MEMS fusion attitude measurement method. Background technique [0002] The attitude information of the carrier is one of the important navigation parameters. These parameters can help understand the real-time carrier movement status and play an important role in military and civilian use. For example, artillery, radar, and missiles need fast and accurate attitude and azimuth results, otherwise their hit accuracy will be greatly affected. [0003] With the rapid development of carrier phase differential technology, it is possible to use the BD system to achieve attitude measurement. Compared with the inertial navigation system, the use of BD to achieve attitude measurement has the characteristics of no drift, no error accumulation, and small size. However, the BD signal is prone to external interference, such as weather, terrain, or other objective fa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/55G01C21/16
CPCG01C21/165G01S19/55
Inventor 蒋青刁春帆田增山周牧李小飞汪镱林张跃仲黎刚平
Owner CHONGQING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com