Results 31 to 40 of about 70,049 (245)

The Bias in PPP-B2b Real-Time Clock Offset and the Strategy to Reduce It

Remote Sensing, 2022
Precise point positioning can provide accurate coordinates to users without reference stations, and the high-precision real-time clock offset product is necessary for real-time precise point positioning application.
Jinhuo Liu, Chengpan Tang, Shanshi Zhou, Xiaogong Hu, Yufei Yang, Jianhua Yang, Yuchen Liu   +6 more
doaj   +1 more source

A Decentralized Processing Schema for Efficient and Robust Real-time Multi-GNSS Satellite Clock Estimation

Remote Sensing, 2019
Real-time multi-GNSS precise point positioning (PPP) requires the support of high-rate satellite clock corrections. Due to the large number of ambiguity parameters, it is difficult to update clocks at high frequency in real-time for a large reference ...
Xinyuan Jiang, Shengfeng Gu, Pan Li, Maorong Ge, Harald Schuh   +4 more
doaj   +1 more source

Performance Analysis of Real-Time GPS/Galileo Precise Point Positioning Integrated with Inertial Navigation System

Sensors, 2023
The integration of global navigation satellite system (GNSS) precise point positioning (PPP) and inertial navigation system (INS) is widely used in navigation for its robustness and resilience, especially in case of GNSS signal blockage.
Lei Zhao, Paul Blunt, Lei Yang, Sean Ince   +3 more
doaj   +1 more source

Performance Evaluation of Real-Time Precise Point Positioning Method

IOP Conference Series: Earth and Environmental Science, 2017
Post-Processed Precise Point Positioning (PPP) is a well-known zero-difference positioning method which provides accurate and precise results. After the experimental tests, IGS Real Time Service (RTS) officially provided real time orbit and clock products for the GNSS community that allows real-time (RT) PPP applications.
Salih Alcay, Muzeyyen Turgut
openaire   +1 more source

Quality monitoring of real-time GNSS precise positioning service system

Geo-spatial Information Science, 2023
The Real-Time Global Navigation Satellite System (GNSS) Precise Positioning Service (RTPPS) is recognized as the most promising system by providing precise satellite orbit and clock corrections for users to achieve centimeter-level positioning with a ...
Run Ji, Xinyuan Jiang, Xinghan Chen, Huizhong Zhu, Maorong Ge, Frank Neitzel   +5 more
doaj   +1 more source

Research on the Real-Time Ambiguity Resolution Algorithm of GPS/Galileo/BDS Based on CNES Real-Time Products

Remote Sensing, 2023
Real-Time (RT) Precise Point Positioning (PPP) uses precise satellite orbits and clock corrections, and employs a separate receiver for positioning. With the growing demand, RT PPP is becoming an increasingly popular research topic.
Meng Gao, Ziheng Meng, Huizhong Zhu, Aigong Xu, Zhihua Cao, Chunbo Tan   +5 more
doaj   +1 more source

Performance assessment of BeiDou-3 PPP-B2b real time pre-cise point positioning

Scientific Reports
To assess the performance of the PPP-B2b service, most existing studies typically store real-time PPP-B2b messages and leverage them to acquire precise satellite orbits and clock offsets.
Yu Lin, Laiyong Song, Jiaqi Shen, Zelin Mu   +3 more
doaj   +1 more source

Property Analysis of the Real-Time Uncalibrated Phase Delay Product Generated by Regional Reference Stations and Its Influence on Precise Point Positioning Ambiguity Resolution

Sensors, 2017
The real-time estimation of the wide-lane and narrow-lane Uncalibrated Phase Delay (UPD) of satellites is realized by real-time data received from regional reference station networks; The properties of the real-time UPD product and its influence on real ...
Yong Zhang, Qing Wang, Xinyuan Jiang
doaj   +1 more source

Guidelines for Pediatric Radiotherapy Simulation: A Report From the Children's Oncology Group Radiation Oncology Discipline

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric radiation therapy presents unique challenges compared to adult treatments, including those of immobilization, potential need for sedation, and the critical importance of accurate, reproducible positioning. Additionally, heightened attention to imaging doses is necessary to minimize long‐term toxicity in survivors.
Parham Alaei, Stephen Mihalcik, Sujith Baliga, Young Kwok, Dana Casey, Eric Ehler, Christiane Burton, John C. Breneman, Daphne A. Haas‐Kogan, Suzanne L. Wolden, Arnold C. Paulino, Nadia N. Laack, Natia Esiashvili, Sarah Milgrom, Christine Hill‐Kayser, Thomas J. Fitzgerald, John A. Kalapurakal, Chia‐Ho Hua   +17 more
wiley   +1 more source

Real-Time Precise Point Positioning Method Considering Broadcast Ephemeris Discontinuities

Navigation
With advancements in the broadcast ephemeris accuracy of global navigation satellite systems (GNSSs), precise point positioning based on broadcast ephemeris (BE-PPP) is gradually showing promising prospects.
Quanrun Cheng, Junping Chen, Yize Zhang, Chao Yu   +3 more
doaj   +1 more source