LI Rui, WANG Yongchao, ZHANG Jun, ZHU Yanbo. New Techniques for Multi-mode SatelliteNavigation Receiver[J]. Chinese Journal of Electronics, 2010, 19(2): 365-368.
Citation: LI Rui, WANG Yongchao, ZHANG Jun, ZHU Yanbo. New Techniques for Multi-mode SatelliteNavigation Receiver[J]. Chinese Journal of Electronics, 2010, 19(2): 365-368.

New Techniques for Multi-mode SatelliteNavigation Receiver

  • Received Date: 2009-02-02
  • Rev Recd Date: 1900-01-01
  • Publish Date: 2010-04-05
  • | Multi-mode satellite navigation receivers
    have to endure heavier computation load because of huge
    increment of visible satellites, in hybrid GPS, GLONASS,
    Galileo and Compass navigation scenario. To solve these
    problems, in the paper, two new technologies are presented
    to decrease computation load: Fast satellite selection algo-
    rithm (FSS) and Novel weighted least-squared positioning
    algorithm (NWLS). Di®erent with conventional methods,
    FSS is based on satellite elevation and azimuth. Firstly,
    all visible satellites are classi¯ed by elevation, with three
    sections: low, medium and high elevation. Then, parts of
    satellites in medium elevation section are excluded through
    sorting, di®erencing, and ratio of high elevation satellites
    and low elevation satellites. As to NWLS positioning al-
    gorithm, ionosphere delay and other error are analyzed
    separately ¯rstly; then weighted observation matrix is cre-
    ated according to two kinds error and satellite position.
    The matrix is employed in receiver position calculation.
    With satis¯ed positioning accuracy, FSS algorithm is able
    to decrease computation load by about 20»30%. In conclu-
    sion, FSS and NWLS algorithm are e±cient and e®ective
    to decrease load of receiver; they are proper to integrated
    satellite navigation application scenario.
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