Results 11 to 20 of about 3,052 (255)

Population fusion optimization algorithm for GNSS integer ambiguity resolution based on PSO and AFSA [PDF]

open access: yes工程科学学报
Carrier phase measurement plays a crucial role in achieving rapid and high-precision positioning within a global navigation satellite system (Global navigation satellite system, GNSS).
Yingqing GUO   +5 more
doaj   +3 more sources

Reliable GPS Integer Ambiguity Resolution. [PDF]

open access: yes, 2011
To operate, guide and control vehicles in low visibility conditions, it is critical that the states of the vehicle are accurately estimated, which includes the three dimensional position, velocity, and attitude. This can be accomplished by GPS (Global Positioning System) aided encoder or GPS aided inertial approaches.
Chen, Anning
core   +8 more sources

Precise Point Positioning Integer Ambiguity Resolution with Decoupled Clocks [PDF]

open access: yes, 2012
Precise Point Positioning (PPP) integer ambiguity resolution has been a challenging topic during the past five years. So far, three PPP integer ambiguity resolution methods – the singledifference between satellites method, the decoupled clock model and the integer phase clock model – have been developed. By using integer ambiguity resolution in PPP, cm-
Shi, Junbo
openaire   +3 more sources

Indoor Carrier Phase Positioning Technology Based on OFDM System

open access: yesSensors, 2021
Carrier phase measurement is a ranging technique that uses the receiver to determine the phase difference between the received signal and the transmitted signal. Carrier phase ranging has a high resolution; thus, it is an important research direction for
Zhenyu Zhang, Shaoli Kang, Xiang Zhang
doaj   +1 more source

Precise Point Positioning with integer ambiguity resolution [PDF]

open access: yes, 2023
The aim of this diploma thesis is to compare the accuracy and time of convegence of the Precise Point Positioning (PPP) method and PPP with an integer ambiguity resolution and to asses the applicability of the PPP method in estimating earthquake ...
Orviská, Terézia
core   +2 more sources

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

open access: yesAerospace, 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   +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

open access: yesISPRS 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   +2 more
doaj   +1 more source

High-precision indoor fast positioning algorithm based on carrier phase

open access: yesTongxin 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   +3 more
doaj   +2 more sources

An Attitude Navigation System Based on the GPS [PDF]

open access: yesEngineering 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

open access: yesRemote 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   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy