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• W3126021979 abstract "The occlusion of buildings in urban environments leads to the intermittent reception of satellite signals, which limits the utilization of observations. This subsequently results in a decline of the positioning and attitude accuracy of Global Navigation Satellite System (GNSS)/Inertial Navigation System (INS) integrated system (GNSS/INS). This study implements a smooth post-processing strategy based on a tightly coupled differential GNSS/INS. Specifically, this strategy used the INS-estimated position to reinitialize integer ambiguity. The GNSS raw observations were input into the Kalman filter to update the measurement. The Rauch–Tung–Striebel smoothing (RTSS) algorithm was used to process the observations of the entire period. This study analyzed the performance of loosely coupled and tightly coupled systems in an urban environment and the improvement of the RTSS algorithm on the navigation solution from the perspective of fully mining the observations. The experimental results of the simulation data and real data show that, compared with the traditional tightly coupled processing strategy which does not use INS-aided integer ambiguity resolution and RTSS algorithm, the strategy in this study sufficiently utilized INS observations and GNSS observations to effectively improve the accuracy of positioning and attitude and ensure the continuity of navigation results in an obstructed environment." @default.
• W3126021979 created "2021-02-01" @default.
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• W3126021979 date "2021-01-17" @default.
• W3126021979 modified "2023-10-14" @default.
• W3126021979 title "Effect Analysis of GNSS/INS Processing Strategy for Sufficient Utilization of Urban Environment Observations" @default.
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• W3126021979 doi "https://doi.org/10.3390/s21020620" @default.
• W3126021979 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7830556" @default.
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