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http://dx.doi.org/10.5139/JKSAS.2003.31.6.052

Two-Failure Gps Raim by Parity Space Approach  

Yoo, Chang-Sun (한국항공우주연구원 스마트무인기 사업단)
Ahn, Iee-Ki (한국항공우주연구원 항법제어연구그룹)
Lee,Sang-Jeong (충남대학교 전자공학과)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.31, no.6, 2003 , pp. 52-60 More about this Journal
Abstract
In aviation navigation using GPS, requirements on availability and integrity must be absolutely satisfied. Current study on accomplishing this integrity includes RAIM(Receiver Autonomous Integrity Monitoring), monitoring integrity internaIly in GPS receiver itself. Parity space technique as one of RAIM techniques has shown the advantages in fault detection and isolation due to each use of its magnitude and direction under the assumption of one fault. ln case of multiple fault, as biases in errors interact decreasing the effect of multiple fault in parity space, the exact fault detection and identification(FDI) may be difficult to be conducted. This paper focuses on FDI study on two faults and explains why parity space techniques applied on single fault is not adequate to the application of multiple fault case and shows that extended parity space technique may improve the performance of RAIM on two faults.
Keywords
aciation navigation; GPS; RAIM; two fault; FDI;
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