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High reliability integer ambiguity resolution of 6DOF RTK GPS/INS
53rd IEEE Conference on Decision and Control, 2014This article presents a Contemplative Realtime (CRT) framework to resolve a vector of carrier phase integer ambiguities existing in Real-Time Kinematic GPS aided inertial navigation systems (RTK GPS/INS). Within this CRT framework, a Maximum-a-Posteriori (MAP) estimation method is derived to represent the RTK GPS/INS problem, and solved by Nonlinear ...
Yiming Chen 0001 +3 more
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Carrier Phase Integer Ambiguity Resolution
2017Global Navigation Satellite System (GNSS ) carrier-phase integer ambiguity resolution is the process of resolving the carrier-phase ambiguities as integers. It is the key to fast and high-precision GNSS parameter estimation and it applies to a great variety of GNSS models that are currently in use in navigation, surveying, geodesy and geophysics.
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Robustness of GNSS integer ambiguity resolution in the presence of atmospheric biases
GPS Solutions, 2013Both the underlying model strength and biases are two crucial factors for successful integer GNSS ambiguity resolution (AR) in real applications. In some cases, the biases can be adequately parameterized and an unbiased model can be formulated. However, such parameterization will, as trade-off, reduce the model strength as compared to the model in ...
Li, Bofeng +2 more
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Improving GNSS data analysis with undifferenced integer ambiguity resolution
2023Along with other space geodetics, the Global Navigation Satellite Systems (GNSS) technique has a profound impact on the realization of terrestrial reference frames and the provision of geodetic and geophysical parameters such as Earth Rotation Parameters (ERP) and geocenter (GCC) coordinates.
Longjiang Tang +5 more
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Instantaneous and controllable integer ambiguity resolution: review and an alternative approach
Journal of Geodesy, 2015In the high-precision application of Global Navigation Satellite System (GNSS), integer ambiguity resolution is the key step to realize precise positioning and attitude determination. As the necessary part of quality control, integer aperture (IA) ambiguity resolution provides the theoretical and practical foundation for ambiguity validation.
Jingyu Zhang +3 more
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Omega Ambiguity Resolution Through Direct Integer Laning
Navigation, 1976In multi-frequency omega navigation systems, it is desirable to have the wide lanes of the beat frequency without sacrificing the higher resolution of the original frequencies. Many schemes are available for doing this such as operation on difference frequencies until the system is within a small lane and then switching to the original frequency. Also,
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The application of several meta-heuristic in DGPS integer ambiguity resolution
2010 International Conference on Information, Networking and Automation (ICINA), 2010In this paper, several meta-heuristic, includes Crossover Tabu Search (CTS), Tabu Search (TS), Genetic Algorithm (GA) and Ant Colony System (ACS) are applied for the integer ambiguity-searching problem (IASP). Given the baseline, those meta-heuristic are proposed to search optimal solution in integer ambiguity space, which is deduced by solving the ...
null Ning Yang, null Xuan Ma
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Improving integer ambiguity resolution for GLONASS precise orbit determination
Journal of Geodesy, 2016The frequency division multiple access adopted in present GLONASS introduces inter-frequency bias (IFB) at the receiver-end both in code and phase observables, which makes GLONASS ambiguity resolution rather difficult or even not available, especially for long baselines up to several thousand kilometers.
Liu, Y. +5 more
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Integer ambiguity resolution for GPS based attitude determination system
Proceedings of the 37th SICE Annual Conference. International Session Papers, 2002The attitude of a vehicle can be precisely determined using GPS (Global Positioning System) carrier phase measurements from more than two antennas attached to the vehicle with properly applied efficient integer ambiguity resolution technique. Many methods utilizing the known baseline length as a constraint have been proposed to resolve integer ...
null Chansik Park, null Ilsun Kim
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A High-Integrity and Efficient GPS Integer Ambiguity Resolution Method
Navigation, 2003: An efficient method for obtaining the admissible integer ambiguity hypotheses within a probabilistic volume is combined with an integer hypothesis testing method to reduce the convergence time to the GPS carrier-phase integers with high probability. The baseline coordinates, float ambiguities, and their covariance matrices are first estimated using a
M. F. ABDEL-HAFEZ +4 more
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