LIU Jingnan, DENG Chenlong, TANG Weiming. Review of GNSS Ambiguity Validation Theory[J]. Geomatics and Information Science of Wuhan University, 2014, 39(9): 1009-1016. DOI: 10.13203/j.whugis20140241
Citation: LIU Jingnan, DENG Chenlong, TANG Weiming. Review of GNSS Ambiguity Validation Theory[J]. Geomatics and Information Science of Wuhan University, 2014, 39(9): 1009-1016. DOI: 10.13203/j.whugis20140241

Review of GNSS Ambiguity Validation Theory

Funds: The National Science Foundation for Distinguished Young Scholars of China,No.41325015;the National NaturalScience Foundation of China,No.41004014;the National 863Program of China,No.2012AA12A202;the CRSRI Open Research Pro-gram,No.CKWV2012312/KY;the Fundamental Research Funds for the Central Universities,No.2012214020208.
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  • Author Bio:

    LIU Jingnan,Academician of Chinese Academy of Engineering,professor,PhD supervisor,specializes in the research ofmodern measurement data processing,GNSS technology and software development,as well as large project implementation.

  • Corresponding author:

    TANG Weiming

  • Received Date: March 30, 2014
  • Revised Date: September 04, 2014
  • Published Date: September 04, 2014
  • Objective Ambiguity resolution is a core issue in high precision GNSS carrier phase positioning,inclu-ding both ambiguity estimation and ambiguity validation.Ambiguity estimation fixes the float ambigu-ity to its integer value utilizing its precision information:an integer least-squares problem.Ambiguityvalidation evaluates the estimated ambiguity and whether it can be treated as the correct:aprobabilitystatistics problem.Incorrectly validated ambiguity can lead to wrong positioning results at the decime-ter or larger bias.Therefore,ambiguity validation will have a direct impact on the reliability of ambi-guity resolution and positioning results based on the theory of ambiguity validation.We introduce sev-eral widely used ambiguity validation methodologies.The advantages and disadvantages of each meth-od are compared and analyzed,from the perspective of the background theory and practicability.Atlast,we address the outlook for future research in ambiguity validation.
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