Static and kinematic PPP-AR performance of low-cost GNSS receiver in monitoring displacements

Ogutcu S., Alcay S., DUMAN H., Ozdemir B. N., Konukseven C.

Advances in Space Research, vol.72, no.11, pp.4795-4808, 2023 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 72 Issue: 11
  • Publication Date: 2023
  • Doi Number: 10.1016/j.asr.2023.09.025
  • Journal Name: Advances in Space Research
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Artic & Antarctic Regions, Communication Abstracts, Compendex, INSPEC, MEDLINE, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.4795-4808
  • Keywords: Displacement, GNSS, PPP-AR, U-blox
  • Sivas Cumhuriyet University Affiliated: Yes

Abstract

Recently, low-cost GNSS receivers have played a significant role in displacement monitoring studies due to the increasing availability of mass-market applications. In this work, the performance of static and kinematic PPP-AR using a low-cost u-blox ZED-F9P GNSS receiver in monitoring displacements is investigated by comparing it with a geodetic-grade GNSS receiver using a displacement simulation apparatus. The capability to determine the horizontal displacement direction is also investigated for both receivers. The results showed that one-sigma horizontal / vertical RMSEs computed from the true displacements and computed displacements are 1.4 / 5.6 mm and 2.6 / 8.4 mm for the geodetic and u-blox receivers, respectively, using 24-h data with static GPS + GLONASS PPP-AR. It is found that GLONASS contribution to GPS-only static PPP is more evident for the u-blox receiver compared with the geodetic one. RMSEs are found to be higher as observation times are decreased. The post-processed kinematic test results showed that minimum 10 / 20 and 20 / 30 mm horizontal / vertical dynamic displacements can be visually detected as an offset from the daily time series for the geodetic and u-blox receivers, respectively.