Precise Point Positioning with the BeiDou Navigation Satellite System [PDF]
Sensors, 2014 By the end of 2012, China had launched 16 BeiDou-2 navigation satellites that include six GEOs, five IGSOs and five MEOs. This has provided initial navigation and precise pointing services ability in the Asia-Pacific regions.
Qile Zhao, Jing Guo, Xing Su
exaly +6 more sources
Characterization and Performance Assessment of BeiDou-2 and BeiDou-3 Satellite Group Delays
NAVIGATION: Journal of the Institute of Navigation, 2022 Based on one year of data, a comprehensive assessment of broadcast group delays and differential code biases (DCBs) from network solutions is presented for all open BeiDou signals. Daily DCB estimates exhibit a precision of 0.1 ns, which also places a limit on long-term variations of the satellite group delays.
Montenbruck, Oliver +3 more
openaire +4 more sources
FFAE-UNet: An Efficient Pear Leaf Disease Segmentation Network Based on U-Shaped Architecture [PDF]
SensorsThe accurate pest control of pear tree diseases is an urgent need for the realization of smart agriculture, with one of the key challenges being the precise segmentation of pear leaf diseases.
Wenyu Wang +4 more
doaj +2 more sources
LSOS: An FG Position Method Based on Group Phase Ranging Ambiguity Estimation of BeiDou Pseudolite
Remote Sensing, 2023 Due to the influence of indoor space environments, the carrier phase information obtained by the BeiDou pseudo-satellite often has the issue of cycle slips, which makes the user unable to carry out high-precision positioning.
Heng Zhang, Shuguo Pan
doaj +2 more sources
Precise orbit determination and point positioning using GPS, Glonass, Galileo and BeiDou
Journal of Geodetic Science, 2014 State of the art Precise Point Positioning (PPP) is currently based on dual-frequency processing of GPS and Glonass navigation systems. The International GNSS Service (IGS) is routinely providing the most accurate orbit and clock products for these ...
Tegedor J., Øvstedal O., Vigen E.
doaj +2 more sources
Basic performance and future developments of BeiDou global navigation satellite system [PDF]
, 2020 The core performance elements of global navigation satellite system include availability, continuity, integrity and accuracy, all of which are particularly important for the developing BeiDou global navigation satellite system (BDS-3).
Yuanxi Yang, Yue Mao, Bijiao Sun
openalex +2 more sources
Overcoming the Challenges of BeiDou Receiver Implementation [PDF]
Sensors, 2014 Global Navigation Satellite System (GNSS)-based positioning is experiencing rapid changes. The existing GPS and the GLONASS systems are being modernized to better serve the current challenging applications under harsh signal conditions.
Mohammad Zahidul H. Bhuiyan +4 more
doaj +3 more sources
Performance Analysis of Beidou-2/Beidou-3e Combined Solution with Emphasis on Precise Orbit Determination and Precise Point Positioning [PDF]
Sensors, 2018 In 2015, the plan for global coverage by the Chinese BeiDou Navigation Satellite System was launched. Five global BeiDou experimental satellites (BeiDou-3e) are in orbit for testing.
Xiaolong Xu +3 more
doaj +3 more sources
Galileo and BeiDou AltBOC Signals and Their Perspectives for Ionospheric TEC Studies. [PDF]
Sensors (Basel)For decades, GNSS code measurements were much noisier than phase ones, limiting their applicability to ionospheric total electron content (TEC) studies. Ultra-wideband AltBOC signals changed the situation. This study revisits the Galileo E5 and BeiDou B2
Chen C +6 more
europepmc +2 more sources
Agriculture, 2023 Image datasets acquired from orchards are commonly characterized by intricate backgrounds and an imbalanced distribution of disease categories, resulting in suboptimal recognition outcomes when attempting to identify apple leaf diseases.
Jie Ding +6 more
doaj +1 more source