Decision-making solution based multi-measurement design parameter for optimization of GPS receiver tracking channels in static and dynamic realtime positioning multipath environment

摘要

This paper presents a new decision-making solution based multi-measurement design parameter for GPS baseband receiver tracking channel selection in static and dynamic real-time positioning multipath scenarios. The novelty claim is the use of evaluation design parameter matrix (EDPM) to measure and rank the overall performance of tracking channel selection. However, the major problems with the evaluation of different operation modes of the GPS receiver include finding reasonable thresholds to select the number of GPS baseband receiver tracking channels that can balance the trade-off between conflicted GPS design parameters and determining the optimum GPS baseband receiver tracking channels in terms of power consumption and localisation accuracy. A practical study that included multipath environment was performed based on static and dynamic real-time positioning. A total of nine different operating modes of GPS receiver are evaluated by each design parameter, namely power consumption, localisation accuracy and time with no position available in multipath scenarios. All the results for positioning scenarios given these parameters are gathered in one platform such as EDPM. Subsequently, the number of tracking channels was scored based on EDPM using multi-criteria decision-making techniques, such as integrated analytic hierarchy process (AHP) and technique for order performance by similarity to ideal solution (TOPSIS); these solutions are from different contexts (e.g., individual and group). The systematic ranking of the static and dynamic scenarios is presented to three experts for subjective judgment to validate the experimental results. Findings of this research in static and dynamic positioning are as follows. (1) Systematically, the integration of TOPSIS and AHP is effective for solving the conflict between GPS design parameters and determining the optimum GPS baseband receiver tracking channel problems. (2) Individual context shows variances among expert ranking. (3) Internal and external aggregations show that a group of TOPSIS are compatible, and NCRT 1 is selected as the best.