YI Zhonghai, CHEN Yuanjun. An Improved GPS Fast Ambiguity Resolution Algorithm with Epoch-Differenced Coordinate Information[J]. Geomatics and Information Science of Wuhan University, 2019, 44(4): 489-494. DOI: 10.13203/j.whugis20170157
Citation: YI Zhonghai, CHEN Yuanjun. An Improved GPS Fast Ambiguity Resolution Algorithm with Epoch-Differenced Coordinate Information[J]. Geomatics and Information Science of Wuhan University, 2019, 44(4): 489-494. DOI: 10.13203/j.whugis20170157

An Improved GPS Fast Ambiguity Resolution Algorithm with Epoch-Differenced Coordinate Information

  • Single-frequency GPS ambiguity resolution on-the-fly has the problem that normal equation is ill-posed. Using epoch-differenced coordinate information between neighboring epochs can mitigate the ill-condition problem to some extent, as a result, the accuracy of the float ambiguity solution will be improved and the convergence time of ambiguity will be shortened. In order to further improve the ambiguity fixing effciency of epoch-differenced method, the epoch-differenced coordinate pseudo-observation error equation and its new variance matrix is reconstructed. The experimental results show that, compared with the previous algorithm with epoch-differenced coordinate information, the new method has higher stability and efficiency.
  • loading

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return