Results 31 to 40 of about 91,121 (140)

Are PPP tests erratically behaved? Some panel evidence [PDF]

, 2006
This paper examines whether, in addition to standard unit root and cointegration tests, panel approaches also produce test statistics behaving erratically when applied to PPP.
Hanck, C, Caporale, GM
core   +7 more sources

Assessment of PPP Using BDS PPP-B2b Products with Short-Time-Span Observations and Backward Smoothing Method

Remote Sensing
The BeiDou Navigation Satellite System (BDS) offers orbit and clock corrections through the B2b signal, enabling Precise Point Positioning (PPP) without relying on ground communication networks.
Lewen Zhao, Wei Zhai
doaj   +2 more sources

Performance Analysis of BDS-3 PPP-B2b During the Satellite In-Orbit Upgrade Period

Remote Sensing
The satellite-based precise point positioning service represented by BeiDou third-generation (BDS-3) PPP-B2b provides all-day, high-availability, and weak communication-dependent precise positioning solutions for GNSS real-time undifferenced users ...
Zeen Yang, Wenjing Huang, Ziyu Yang, Xiao Chen, Naishuo Bu, Chuang Qian, Zhuojun Jiang   +6 more
doaj   +2 more sources

Real‐time precise orbit determination for FY‐3C and FY‐3D based on BDS and GPS onboard observation

IET Radar, Sonar &Navigation, Volume 17, Issue 8, Page 1213-1229, August 2023., 2023
(1) The real‐time precise orbit determination (POD) for low earth orbit (LEO) satellites based on spaceborne global positioning system (GPS) and BDS‐2 observations are executed. (2) Code multipath piece‐wise linear (PWL) error model of BDS‐2 satellites is constructed and applied to real‐time LEO POD.
Zhiyu Wang, Liang Wang, Zishen Li, Mainul Hoque, Ningbo Wang, Dongyan Wei, Hong Yuan   +6 more
wiley   +1 more source

Application of journey maps to the development of emergent sustainability‐oriented technologies: Lessons for user involvement in agriculture

Business Strategy &Development, Volume 5, Issue 3, Page 209-221, September 2022., 2022
Abstract This article foregrounds the challenges and necessity of promoting user involvement in traditional sectors, especially those that constitute strong pillars for sustainable development. As a case in point, the emergence of precision agriculture technologies requires novel methods to integrate users in innovation processes.
Débora Monteiro Moretti, Chad M. Baum, Michael Wustmans, Stefanie Bröring   +3 more
wiley   +1 more source

Signal‐in‐Space and Positioning Performance of BDS Open Augmentation Service

Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022
As a typical augmentation satellite system for centimeter‐level positioning, PPP (Precise Point Positioning) service based on PPP‐B2b signal of China’s new generation BeiDou system (BDS‐3) was released for Asia‐Pacific area on July, 2020. This paper first introduces the recovery theory of PPP‐B2b SSR (State Space Representation) messages and then ...
Liang Chen, Guangyu Zhou, Guo Chen, Weibin Sun, Luotian Pan, Xinyuan Jiang   +5 more
wiley   +1 more source

Modelling and Assessment of BDS‐3 Real‐time Precise Point Positioning Time Transfer Based on PPP‐B2b Service

Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022
In 2020, users in and around China had access to a new real‐time precise point positioning (RTPPP) service with the BeiDou global navigation satellite system (BDS‐3) B2b (PPP‐B2b) signal. In this study, the quality of PPP‐B2b products is first assessed and compared with the CNAV1 broadcast ephemeris. Then a mode of BDS‐3 PPP time transfer with PPP‐B2b (
Jian Tang, Daqian Lyu, Fangling Zeng, Yulong Ge, Runzhi Zhang, Jun Li   +5 more
wiley   +1 more source

PPP/PPP‐RTK open formats: Overview, comparison, and proposal for an interoperable message

NAVIGATION, Volume 68, Issue 4, Page 759-778, Winter 2021., 2021
Abstract This paper presents and reviews the main existing open specifications for PPP/PPP‐RTK services, including satellite navigation providers (QZSS, Galileo, BeiDou, GLONASS) and other industrial or scientific initiatives (RTCM, SAPCORDA, 3GPP, IGS).
Rui Hirokawa, Ignacio Fernández‐Hernández, Simon Reynolds   +2 more
wiley   +1 more source

Analysis of B2b signal of BDS III satellite

Dianzi Jishu Yingyong, 2020
With the construction of BDS III satellite nearing completion, Beidou service will transition smoothly to be provided mainly by BDS III system. The B2b signal interface document was announced on December 27, 2019.
He Xulei, Liu Cheng, Chen Ying, Ba Xiaohui, Chen Jie   +4 more
doaj   +1 more source

Principle and performance of BDSBAS and PPP-B2b of BDS-3

Satellite Navigation, 2022
Within the framework of differential augmentation, this paper introduces the basic technical framework and performance of the BeiDou Global Navigation Satellite System (BDS-3) Satellite-Based Augmentation System (BDSBAS), including orbit products ...
Yuanxi Yang, Qun Ding, Weiguang Gao, Jinlong Li, Yangyin Xu, Bijiao Sun   +5 more
doaj   +1 more source