Research and realization of high-precision GPS datum, considering plate movement, stability and system errors

Qm Zhang, Guan Wen Huang, Xiaoli Ding, Li Wang, Chao Ying Zhao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

6 Citations (Scopus)


It is essential to set a rational datum for the GPS adjustment of national or city-level subsidence monitoring. Based on the characteristics of the datum of urban GPS land subsidence network, and the shortage of traditional datum for the urban GPS land subsidence monitoring, this paper puts forward an enhanced quasi-stable datum model by considering the plate movement, stability of the base benchmarks and some other systematic effects. Owing to the consideration of the height effects from stability of base benchmarks and the plate movement and the unified GPS baseline frame and the quasi-stable datum for each epoch monitoring, this model can give reasonable deformation results by correcting the errors from instability of base benchmarks and inconsistent baseline frames of different monitoring epochs. Lastly six Xian GPS land subsidence monitoring datasets are tested and the rationality and feasibility of newly deduced model are verified.
Original languageEnglish
Pages (from-to)3158-3165
Number of pages8
JournalActa Geophysica Sinica
Issue number12
Publication statusPublished - 20 Dec 2009
Externally publishedYes


  • Baseline frame
  • GPS monitoring datum
  • Land subsidence
  • Plate movement
  • Quasi-stable datum
  • System parameters

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology

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