Open AccessACCURACY ENHANCEMENT OF A LOW COST INS/GPS INTEGRATION SYSTEM FOR LAND APPLICATIONS
Author(s) -
Duc–Tan Tran,
N.P. Thuy
Publication year - 2009
Publication title -
khoa học công nghệ
Language(s) - English
Resource type - Journals
ISSN - 1859-0128
DOI - 10.32508/stdj.v12i4.2229
Subject(s) - unavailability , global positioning system , gps/ins , kalman filter , computer science , precision lightweight gps receiver , assisted gps , real time computing , engineering , reliability engineering , gps receiver , telecommunications , artificial intelligence
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.