Results 31 to 40 of about 70,485 (278)

On the potential of undifferenced and uncombined GNSS time and frequency transfer with integer ambiguity resolution and satellite clocks estimated

GPS Solutions, 2022
The use of global navigation satellite systems (GNSS) has been a competitive way to provide high-precision and low-cost time and frequency transfer results.
Xiaolong Mi, Baocheng Zhang, A. el-Mowafy, Kan Wang, Yunbin Yuan   +4 more
semanticscholar   +1 more source

Calibrating receiver-type-dependent wide-lane uncalibrated phase delay biases for PPP integer ambiguity resolution

Journal of Geodesy, 2021
Wide-lane (WL) uncalibrated phase delay (UPD) is usually derived from Melbourne–Wübbena (MW) linear combination and is a prerequisite in Global Navigation Satellite Systems (GNSS) precise point positioning (PPP) ambiguity resolution (AR).
Bobin Cui, Pan Li, Jungang Wang, M. Ge, H. Schuh   +4 more
semanticscholar   +1 more source

Real-Time Precise Orbit Determination for LEO between Kinematic and Reduced-Dynamic with Ambiguity Resolution

Aerospace, 2022
The real-time integer-ambiguity resolution of the carrier-phase observation is one of the most effective approaches to enhance the accuracy of real-time precise point positioning (PPP), kinematic precise orbit determination (KPOD), and reduced-dynamic ...
Zhiyu Wang, Zishen Li, Ningbo Wang, Mainul Hoque, Liang Wang, Ran Li, Yang Zhang, Hong Yuan   +7 more
doaj   +1 more source

Accuracy Evaluation of Ionospheric Delay from Multi-Scale Reference Networks and Its Augmentation to PPP during Low Solar Activity

ISPRS International Journal of Geo-Information, 2021
The Precise Point Positioning (PPP) with fast integer ambiguity resolution (PPP-RTK) is feasible only if the solution is augmented with precise ionospheric parameters.
Lewen Zhao, Jan Douša, Pavel Václavovic   +2 more
doaj   +1 more source

An Attitude Navigation System Based on the GPS [PDF]

Engineering and Technology Journal, 2010
In this paper, the use of multi-GPS receiver to estimate the parameters ofattitude (orientation) of a platform is developed. The GPS receiver has twomeasurements; pseudorange and carrier phase.
Saad A-R. Makki, Mushtaq Talib Abd
doaj   +1 more source

An Efficient BDS-3 Long-Range Undifferenced Network RTK Positioning Algorithm

Remote Sensing, 2023
In 2020, the BeiDou-3 global navigation satellite system (BDS-3) was officially completed and put into service. Currently, network real-time kinematic (RTK) technology is considered the main means through which to improve the positioning accuracy of the ...
Huizhong Zhu, Jie Zhang, Jun Li, Aigong Xu   +3 more
doaj   +1 more source

Influence of the inhomogeneous troposphere on GNSS positioning and integer ambiguity resolution

, 2021
The tropospheric delay is one of many error sources that affect the Global Navigation Satellite System (GNSS) positioning solutions. The widely used troposphere models assume a homogeneous atmosphere so that only the zenith delay needs to be determined ...
Hongyang Ma, D. Psychas, Xuhuang Xing, Qile Zhao, S. Verhagen, Xianglin Liu   +5 more
semanticscholar   +1 more source

A variant of raw observation approach for BDS/GNSS precise point positioning with fast integer ambiguity resolution

Satellite Navigation, 2021
The Precise Point Positioning (PPP) technique uses a single Global Navigation Satellite System (GNSS) receiver to collect carrier-phase and code observations and perform centimeter-accuracy positioning together with the precise satellite orbit and clock ...
Qile Zhao, Jing Guo, Sijing Liu, Jun Tao, Zhigang Hu, Gang Chen   +5 more
semanticscholar   +1 more source

High-precision indoor fast positioning algorithm based on carrier phase

Tongxin xuebao, 2022
In order to improve the positioning accuracy and the speed of position solution in indoor wireless environment, a high-precision indoor fast positioning algorithm based on carrier phase was proposed.By introducing the reference terminal, the influence of
Shaoshuai FAN, Zhiqiang RONG, Hui TIAN, Lihua LI   +3 more
doaj   +2 more sources

Data-Driven Generalized Integer Aperture Bootstrapping for Real-Time High Integrity Applications [PDF]

, 2016
A new method is developed for integer ambiguity resolution in carrier-phase differential GPS (CDGPS) positioning. The method is novel in that it is (1) data-driven, (2) generalized to include partial ambiguity resolution, and (3) amenable to a full ...
Green, G. Nathan, Humphreys, Todd E., King, Martin   +2 more
core   +1 more source