China Satellite Navigation Conference (CSNC) 2012 by Rui Li, Xinyuan Zhang, Zhigang Huang (auth.), Jiadong Sun,

By Rui Li, Xinyuan Zhang, Zhigang Huang (auth.), Jiadong Sun, Jingnan Liu, Yuanxi Yang, Shiwei Fan (eds.)

Proceedings of the third China satellite tv for pc Navigation convention (CSNC2012) provides chosen learn papers from CSNC2012, hung on 15-19 may well in Guanzhou, China. those papers speak about the applied sciences and functions of the worldwide Navigation satellite tv for pc process (GNSS), and the newest growth made within the China BeiDou process specially. they're divided into nine subject matters to check the corresponding periods in CSNC2012, which generally lined key issues in GNSS. Readers can find out about the BeiDou method and hold abreast of the most recent advances in GNSS thoughts and functions. solar Jiadong is the manager clothier of the Compass/BeiDou approach, and the Academician of chinese language Academy of Sciences; LIU Jingnan is a professor at Wuhan collage, and the Academician of chinese language Academy of Engineering; YANG Yuanxi is a professor at China nationwide management of GNSS and functions, and the Academician of chinese language Academy of Sciences; FAN Shiwei is a researcher on satellite tv for pc navigation.

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It contains horizontal position which combines certain false alarm probability and missed detection probability; VPL will be gained for vertical guidance process. A flowchart of RAIM algorithm can be shown as follows: Step 1: identify the number of visible satellites; make a decision whether it satisfies the qualification of RAIM algorithm. Step 2: gain the visible satellites’ geometry structure based on ephemeris information. Step 3: compute the test threshold T and protection threshold PL of current position based on the geometry structure, false alarm probability and probability of missed detection probability.

Institute of Navigation, Washington, DC (pp. 223–229). 5. Brown, R. G. (1992). A baseline GPS RAIM scheme and a note on the equivalence of three RAIM methods. Navigation, 39(3), 301–316. 6. , Feng, Y. , & Wang, C. (2009). Rover autonomous integrity monitoring of GNSS RTK positioning solutions with multi-constellations. Proceedings of the 22nd International Technical Meeting of the Satellite Division of the Institute of Navigation (pp. 1361–1370). 7. Zhang, X. , Huang, Z. , & Li, R. (2010). Ramose RAIM: A multiple-failure detection algorithm design for civil aviation.

Lijun et al. Demanded quantity GPS satellite COMPASS satellite Galileo satellie GPS UERE Compass UERE Observation geometry Navigation position User position Galileo UERE PMD Positioning Solution P FA RAIM algorithm Protective level Statistics monitoring Pmd Positing error Fig. 1 Flow chart of RAIM algorithm follow section, the design and determination of critical parameters of RAIM considering the characters of multi-constellation system would be discussed. 1 Space–Time Transformation of Measurement Equation Measurement equation of RAIM algorithm for multi-constellation system should be constructed in a unified space coordinate system.

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