Your browser does not support JavaScript!
http://iet.metastore.ingenta.com
1887

Theoretical analysis of RAIM in the occurrence of simultaneous two-satellite faults

Theoretical analysis of RAIM in the occurrence of simultaneous two-satellite faults

For access to this article, please select a purchase option:

Buy article PDF
£12.50
(plus tax if applicable)
Buy Knowledge Pack
10 articles for £75.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
IET Radar, Sonar & Navigation — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

Most algorithms on receiver autonomous integrity monitoring (RAIM) are under the assumption of a single-satellite fault, because there is an extremely small probability that significant simultaneous multiple-satellite faults may occur. However, after the implementation of the Galileo system in a few years, there will be more satellites in view for the user to utilise together with GPS satellites, and a combination of them will bring better performance for RAIM. On the other hand, with the help of wide area augmentation system and the use of dual-frequency operation, pseudo-range errors will be reduced greatly. Thus, tighter alert limits are required for RAIM, and formerly ‘small’ errors should not be neglected. All of those factors make it necessary to consider simultaneous multiple-satellite faults. A detailed theoretical analysis of RAIM under the condition of two-satellite faults for both vertical and horizontal directions is presented. The characteristic/max slopes for every pair of satellites are then deduced in order to calculate the tighter vertical/horizontal protection level for RAIM.

References

    1. 1)
      • Lee, Y.C.: `Investigation of extending Receiver Autonomous Integrity Monitoring (RAIM) to combined use of Galileo and modernized GPS', ION GNSS 17th Int. Technical Meeting of the Satellite Division, 21–24 September 2004, Long Beach, CA.
    2. 2)
      • , : `Minimum operational performance standards for airborne supplemental navigation equipment using Global Positioning System (GPS)', Document No. RTCA/DO-208, July 1991, Prepared by SC-159.
    3. 3)
      • R. Grover Brown . Solution of the two-failure GPS RAIM problem under worst-case bias conditions: parity space approach. NAVIGATION: J. Inst. Navig. , 4 , 425 - 431
    4. 4)
      • R. Grover Brown . A Baseline GPS RAIM Scheme and a note on the equivalence of three RAIM methods. NAVIGATION: J. Inst. Navig , 3 , 101 - 115
    5. 5)
      • Grohe, R., Tjaden, J.: `Galileo: Status and Way Forward', Institute of Navigation GPS/GNSS 2003 Proc., 9–12 September 2003, Portland Oregon.
    6. 6)
      • R. Grover Brown , G.Y. Chin . (1998) GPS RAIM: Calculation of threshold and protection radius using chi-square methods – a geometric approach, GPS Papers published in Navigation (Red Book Series), Institute of Navigation, Fairfax.
    7. 7)
      • Liu, J.: `GPS RAIM: Statistics based improvement on the calculation of threshold and horizontal protection radius', International Symposium on GPS/GNSS 2005, 8–10 December 2005, Hong Kong.
    8. 8)
      • Lee, Y.C.: `Performance of Receiver Autonomous Integrity Monitoring (RAIM) in the presence of simultaneous multiple satellite faults', ION 60th Annual Meeting/U.S. Air Force Institute of Technology and The U.S. Air Force Research Laboratory, Sensors Directorate, 7–9 June 2004, Dayton, OH.
    9. 9)
      • `U.S. Standard for Wide Area Augmentation System (WAAS) LPV Approach Procedure Construction Criteria', FAA Order 8260.50, 6 September 2002.
    10. 10)
      • Perz, M.: `GPS Modernization Update', Briefing presented at RTCA-159 Meeting, RTCA HQ, 16 May 2003, Washington, DC.
http://iet.metastore.ingenta.com/content/journals/10.1049/iet-rsn_20050159
Loading

Related content

content/journals/10.1049/iet-rsn_20050159
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address