<p>The potential of many real-time applications was increased by the positioning, navigation, and timing (PNT) capabilities offered by Global Navigation Satellite System (GNSS) technology. To cater to the user’s need for enhanced accuracy, various GNSS positioning techniques have evolved. One of the recent advancements in GNSS positioning technology is Precise Point Positioning (PPP), which enhances real-time GNSS data typically through post-processing. PNT services of the Quasi-Zenith Satellite System (QZSS), a regional satellite-based navigation system developed by Japan is available for Japan and the surrounding east Asia-Oceanic region including India. QZSS offers Multi-GNSS Advanced Demonstration of Orbit and Clock Analysis (MADCOA) service to provide real-time GPS/GLONASS/QZSS orbit and clock State Space Representation (SSR) corrections through QZSS satellite signals or over the Internet for instantaneous PPP reducing the processing time. First report on the performance of real-time PPP using QZSS MADOCA service from India is presented in this work. This study evaluates the performance of MADOCA-PPP in static and dynamic operation using compact, low-cost GNSS hardware from two locations in India using the online MADOCA-PPP service received through the Internet. The results show convergence of the solution within decimeter-level accuracy from both locations after about 45&#xa0;min of initial operation; the results would be useful in enhancing confidence of using the service for real-time PPP in the Indian region. </p><p>Statement on the relevance of the work: QZSS, a regional system developed by Japan has various advantages including real-time orbit and clock correction for enhanced position solution accuracy. Based on the experience of QZSS visibility from India and MADOCA-PPP service in the Asian region, the usability and advantages of the MADOCA-PPP are explored from India for the first time.</p>

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First Report on MADOCA Precise Point Positioning (PPP) Performance Evaluation from India

  • Somnath Mahato,
  • Dinesh Manandhar,
  • Aishrya S. Pillai,
  • Mrinal Goswami,
  • Anindya Bose

摘要

The potential of many real-time applications was increased by the positioning, navigation, and timing (PNT) capabilities offered by Global Navigation Satellite System (GNSS) technology. To cater to the user’s need for enhanced accuracy, various GNSS positioning techniques have evolved. One of the recent advancements in GNSS positioning technology is Precise Point Positioning (PPP), which enhances real-time GNSS data typically through post-processing. PNT services of the Quasi-Zenith Satellite System (QZSS), a regional satellite-based navigation system developed by Japan is available for Japan and the surrounding east Asia-Oceanic region including India. QZSS offers Multi-GNSS Advanced Demonstration of Orbit and Clock Analysis (MADCOA) service to provide real-time GPS/GLONASS/QZSS orbit and clock State Space Representation (SSR) corrections through QZSS satellite signals or over the Internet for instantaneous PPP reducing the processing time. First report on the performance of real-time PPP using QZSS MADOCA service from India is presented in this work. This study evaluates the performance of MADOCA-PPP in static and dynamic operation using compact, low-cost GNSS hardware from two locations in India using the online MADOCA-PPP service received through the Internet. The results show convergence of the solution within decimeter-level accuracy from both locations after about 45 min of initial operation; the results would be useful in enhancing confidence of using the service for real-time PPP in the Indian region.

Statement on the relevance of the work: QZSS, a regional system developed by Japan has various advantages including real-time orbit and clock correction for enhanced position solution accuracy. Based on the experience of QZSS visibility from India and MADOCA-PPP service in the Asian region, the usability and advantages of the MADOCA-PPP are explored from India for the first time.