Abstract
With the rapid development of Global Navigation Satellite Systems (GPS, BDS, GALILEO and GLONASS), the number of available satellites is increasing. The redundancy of GNSS is enhanced. This will offer the possibility of realizing receiver fault detection and exclusion (FDE). Due to factors such as satellite fault and strong electromagnetic interference, measurements from some satellite are vulnerable to become outliers. Unacceptable positioning errors will occur unless such faulty measurements are detected and excluded. Therefore, it is very important to apply RAIM (Receiver Automatic Integrity Monitoring) algorithm for improving the positioning precision. The main function of RAIM algorithm includes two aspects: fault detection and fault exclusion. This paper presents a RAIM algorithm based on residual separation. The algorithm uses the residual sum of squares of observation equations as test statistics. When test statistics exceed alarm threshold, it can be considered that there are faults in measurements. And then the visible satellites are excluded at every turn, while multi-combinations of remaining measurements are obtained. After SSE (Sum of Squared Error) calculated, the combination of remaining measurements with smallest SSE is the optimal result. Field test data and simulation data are processed in this work. The RAIM algorithm based on residual separation can not only avoid excluding too many satellites, but also improve the positioning accuracy in the case of containing faults.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Xu S, Zhang H, Yang Z, Wang Z (2015) Theory and application of GPS measure. Wuhan University Press, Wuhan
Wu J, An X, Zheng W (2015) Air-vehicle position and navigation technology. National Defense Industry Press, Beijing
Chen J (2001) Research of GPS integrity augmentation. Information Engineering University, Zhengzhou (in Chinese)
Joerger M, Chan F-C, Pervan B (2014) Solution separation versus residual-based RAIM. J Inst Navig U S A
Chan F-C, Pervan B (2010) A practical approach to RAIM-based fault-tolerant position estimation In: Proceedings of 23rd international technical meeting of the satellite division of the institute of navigation, ION GNSS 2010, Portland, OR, Sept 2010, pp 3181–3190
Blanch J, Walter T, Enge P (2013) Result on the optimal detection statistic for integrity monitoring In: Proceedings of the 2013 international technical meeting of the institute of navigation, San Diego, California, Jan 2013, pp 263–273
Joerger M, Stevanovic S, Chan F-C, Langel S, Pervan B (2013) Integrity risk and continuity risk for fault detection and exclusion using solution separation ARAIM In: Proceedings of the 26rd international technical meeting of the satellite division of the institute of navigation, ION GNSS+2013, pp 2702–2722
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2017 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Li, Z., Li, Q., Wu, J. (2017). RAIM Algorithm Based on Residual Separation. In: Sun, J., Liu, J., Yang, Y., Fan, S., Yu, W. (eds) China Satellite Navigation Conference (CSNC) 2017 Proceedings: Volume II. CSNC 2017. Lecture Notes in Electrical Engineering, vol 438. Springer, Singapore. https://doi.org/10.1007/978-981-10-4591-2_19
Download citation
DOI: https://doi.org/10.1007/978-981-10-4591-2_19
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-10-4590-5
Online ISBN: 978-981-10-4591-2
eBook Packages: EngineeringEngineering (R0)