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ACCURACY ENHANCEMENT OF A LOW COST INS/GPS INTEGRATION SYSTEM FOR LAND APPLICATIONS

Tan Duc Tran 1, *
Thuy Phu Nguyen 1
  1. College of Technology, VNU-HN
Correspondence to: Tan Duc Tran, College of Technology, VNU-HN. Email: pvphuc@hcmuns.edu.vn.
Volume & Issue: Vol. 12 No. 4 (2009) | Page No.: 30-38 | DOI: 10.32508/stdj.v12i4.2229
Published: 2009-02-28

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Copyright The Author(s) 2023. This article is published with open access by Vietnam National University, Ho Chi Minh city, Vietnam. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0) which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. 

Abstract

In this paper, the design of the low cost INS/GPS integration system is addressed with good accuracy. The Strapdown INS (SINS) and Cascade Kalman filter have been tested to ensure that the system can be operated flexibly between feed forward and feedback modes due to various GPS conditions. The vehicle motion constraints are also utilized to reduce the INS error degradation during the periods of GPS unavailability. The experiment results shown that the INS/GPS system can be applied to land applications in challenging GPS environments.

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