Results 31 to 40 of about 194 (149)

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

Comprehensive Evaluation of Data-Related Factors on BDS-3 B1I + B2b Real-Time PPP/INS Tightly Coupled Integration

Remote Sensing, 2022
Owing to the developments of satellite-based and network-based real-time satellite precise products, the Precise Point Positioning (PPP) technique has been applied far and wide, especially since the PPP-B2b service was provided by the third-generation ...
Junyao Kan, Zhouzheng Gao, Qiaozhuang Xu, Ruohua Lan, Jie Lv, Cheng Yang   +5 more
doaj   +1 more source

Modelling and Assessment of Single-Frequency PPP Time Transfer with BDS-3 B1I and B1C Observations

Remote Sensing, 2022
BDS-3 is now providing global positioning, navigation and timing (PNT) services. BDS-3 has new B1C, B2a and B2b signals compared to BDS-2. This work presents two single-frequency (SF) PPP time transfer models using BDS-3, B1C and B1I observations, and ...
Shengli Wang, Yulong Ge, Xiaolin Meng, Pengli Shen, Kaidi Wang, Fuyang Ke   +5 more
doaj   +1 more source

A New Strategy for Improving Multi‐Frequency PPP‐RTK Ionospheric Correction Availability and User Performance in Low‐ and Middle‐Latitudes

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract High‐precision regional ionospheric correction products are essential for achieving accurate and fast‐convergence solutions in Precise Point Positioning Real‐Time Kinematic (PPP‐RTK). For users in low‐ and middle‐latitudes, PPP‐RTK server narrow‐lane (NL) ambiguity resolution (AR) typically requires more than 10 min, which largely affects the ...
Pan Li, Shitong Chen, Jiahuan Hu, Xin Xie, Jiadi Dai, Bao Shu, Guanwen Huang   +6 more
wiley   +1 more source

A Novel Robust High‐Precision Ionospheric Delay Modeling for PPP‐RTK Using Crowdsourced Data

Space Weather, Volume 24, Issue 2, February 2026.
Abstract The performance of PPP‐RTK is critically dependent on the quality of ionospheric corrections derived from a reference network. While the proliferation of mass‐market Global Navigation Satellite System (GNSS) devices offers a promising crowdsourcing opportunity to densify or replace this infrastructure, it introduces the formidable challenge of
Bo Wang, Jiaxi Zhu, Zhilu Wu, Dejin Zhang, Zhao Li, Minsi Ao, Shengfeng Gu   +6 more
wiley   +1 more source

Assessment of Multi-Frequency PPP Ambiguity Resolution Using Galileo and BeiDou-3 Signals

Remote Sensing, 2021
From network RTK to PPP-RTK, it is highly expected that high-precision positioning within a few minutes can be achieved with a sparse reference network.
Jiang Guo, Qiyuan Zhang, Guangcai Li, Kunlun Zhang   +3 more
doaj   +1 more source