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http://dx.doi.org/10.5394/KINPR.2015.39.1.15

A Comparative Analysis of Performance of Ambiguity Validation Methods  

Ko, Jae-Young (Marine Safety Research Division, Korea Research Institute of Ships & Ocean Engineering (KRISO))
Shin, Mi-Young (Marine Safety Research Division, Korea Research Institute of Ships & Ocean Engineering (KRISO))
Han, Young-Hoon (Marine Safety Research Division, Korea Research Institute of Ships & Ocean Engineering (KRISO))
Cho, Deuk-Jae (Marine Safety Research Division, Korea Research Institute of Ships & Ocean Engineering (KRISO))
Publication Information
Journal of Navigation and Port Research / v.39, no.1, 2015 , pp. 15-21 More about this Journal
Abstract
In high precision positioning systems based on GNSS, ambiguity resolution is an important procedure. Correct ambiguity leads to positioning results which have high precision between millimeters and centimeters. However, when the ambiguity is determined incorrectly, ensuring accuracy and precision of the positioning result is impossible. An ambiguity validation test is required to obtain correct ambiguity when ambiguity resolution is performed based on the ILS (Integer Least Squares), which shows the best performance in point of theory and experiment when compared with other methods such as IR (Integer Rounding) and IB (Integer Bootstrapping). Comparison between the candidates of the validation test is needed to judge ambiguity correctly, because ILS searches for candidates of integer ambiguity, unlike other methods which calculate only one integer ambiguity. We analyzed the experimental performance of ambiguity validation tests. R-ratio, F-ratio and W-ratio were adopted for analysis. The performance of validation tests was evaluated by classifying normal operation, detection, missed detection and false alarm. As a result, strengths and weaknesses of validation tests was showed to experimental. we concluded that validation tests must be selected according to environment.
Keywords
Ambiguity resolution; Ambiguity validation test; R-ratio; F-ratio; W-ratio;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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