CLASLIB: An Open-source Toolkit for Low-cost high-precision PPP-RTK Positioning

2021

IEEJ Journal IA

This study evaluated the performance of the Quasi-Zenith Satellite System (QZSS) in Japan at an early stage for its future sustainable operation. After the four satellites of QZSS Michibiki started their official operation, the fixed-position and moving vehicles simultaneously received centimeter-class positioning augmentation signals, L6D-CLAS (Centimeter-Level Augmentation Service), and L6E-MADOCA (Multi-GNSS Advanced Demonstration tool for Orbit and Clock Analysis) from Michibiki. This is the first attempts the results of real-time.

Section: 2mentioning

confidence: 99%

Performance Evaluation of Centimeter-Level Augmentation Positioning L6-CLAS/MADOCA at the Beginning of Official Operation of QZSS

Namie

2021

IEEJ Journal IA

“…In (7) and ( 8), the following quantities are provided as the OSR correction values distributed by CLAS (Be output by SSR2OSR from CLAS). These estimated values are subtracted from both sides in (7), (8), then these terms are eliminated.…”

Section: Apply To Gr Modelmentioning

confidence: 99%

“…In CLAS, double-frequency signals are assumed to be used, and the specification values are specified for double-frequency positioning [6,7].…”

Section: Introductionmentioning

confidence: 99%

Positioning Accuracy of Single-Frequency GNSS PPP based on GR Models by using CLAS

Miyatake

Mimura

et al. 2021

Transactions of ISCIE

In this paper, we present the single frequency PPP algorithms based on our GR models with applying CLAS (Centimeter Level Augmentation Service) data from Japan Quasi-Zenith-Satellite-System (QZSS). Throughout the numerical experiments by using the single frequency (L1-band, only) measurement data for the static position, we have very accurate positioning results; namely the total 3D-RMS errors by applying CLAS is approximately 0.13 [m], which is the superior positioning result achieved as a single frequency GPS measurements.

“…13 show the positioning results plotted on Google Maps. The yellow pin is the position obtained by the PPP (Precise Point Positioning) method [9] with applying CLAS (Centimeter Level Augmentation Service) data from Japan QZSS (Quasi-Zenith-Satellite-System) [10] and it is assumed to be true position in evaluating the positioning results in this experiment. The PPP is a method that receives code and carrier phase from a satellite with a single receiver and estimates receiver position.…”

Section: Positioningmentioning

confidence: 99%

NLOS Satellite Detection Using Fish-Eye Camera for Improving GNSS Positioning Accuracy ― Further Results

Yoshida

Stochastic Systems Theory and its Applications (SSS)

Koya

2020