Analysis of PPP-AR Using Real-Time Product in Suburban Environment

Zheng Xin Lin, Shau Shiun Jan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This study aimed to analyze the performance of precise point positioning with ambiguity resolution (PPP-AR) in a dynamic suburban environment. The phase biases of the satellites can be reduced using real-time observable-specific signal bias (OSB) products provided by Centre National d'Études Spatiales (CNES). Moreover, by using OSB products with the between-satellite single-difference (SD) approach, the phase biases of the receiver can be reduced, thereby recovering the integer property of wide-lane (WL) and narrow-lane (NL) ambiguities. Float WL ambiguities can be estimated through the Hatch–Melbourne–Wübbena linear combination, and SD WL ambiguities can be rounded to integers if the fractional cycle is small enough. Integer SD NL ambiguities can be determined using the least-squares ambiguity decorrelation adjustment (LAMBDA) method and validated using the ratio test and lower bound success rate. After SD NL ambiguities are fixed, SD ionosphere-free ambiguities can be fixed and the states in the extended Kalman filter (EKF) can be reduced to have a fixed solution. Dynamic experiments were conducted in a suburban environment, and in the experiments, NovAtel PwrPak 7 and LN200C were used as reference systems. Herein, the time to fix ambiguity, fixed rate, and positioning performance results of PPP-AR were compared with those of PPP in a suburban environment; this is the main contribution of our study. The root mean square error values in the east, north, and upward directions were 0.4051, 0.1335, and 0.3462 m, respectively. The positioning results of PPP-AR improved by 10% compared with those of PPP.

Original languageEnglish
Title of host publicationION 2024 International Technical Meeting Proceedings
PublisherInstitute of Navigation
Pages840-845
Number of pages6
ISBN (Electronic)9780936406367
DOIs
Publication statusPublished - 2024
Event2024 International Technical Meeting of The Institute of Navigation, ITM 2024 - Long Beach, United States
Duration: 2024 Jan 232024 Jan 25

Publication series

NameProceedings of the International Technical Meeting of The Institute of Navigation, ITM
Volume2024-January
ISSN (Print)2330-3662
ISSN (Electronic)2330-3646

Conference

Conference2024 International Technical Meeting of The Institute of Navigation, ITM 2024
Country/TerritoryUnited States
CityLong Beach
Period24-01-2324-01-25

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Electrical and Electronic Engineering

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