PDR Drift 및 Radio Map Resolution 변화가 SC 기반 위치 추정에 미치는 영향 분석
Performance Analysis and Compensation Methods According to PDR Drift and Radio Map Resolution
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This study investigates the effect of Pedestrian Dead Reckoning (PDR) drift and radio map resolution on the performance of Surface Correlation (SC)-based indoor positioning. SC utilizes spatially accumulated Received Signal Strength Indicator (RSSI) sequences to improve localization accuracy, but its performance is sensitive to PDR errors and radio map granularity. To mitigate the impact of drift-induced misalignment, a ±10° rotation-based correction method is proposed. Simulations are conducted under varying resolutions (1 m, 2 m, 3 m) and drift levels (0.1°, 0.3°, 0.5°) to evaluate positioning accuracy and computational efficiency. The proposed method demonstrates consistent performance improvement under all drift conditions and is especially effective with high-resolution radio maps. The findings provide practical guidance for designing SC-based positioning systems with optimized trade-offs between accuracy and efficiency.
Abstract
This study investigates the effect of Pedestrian Dead Reckoning (PDR) drift and radio map resolution on the performance of Surface Correlation (SC)-based indoor positioning. SC utilizes spatially accumulated Received Signal Strength Indicator (RSSI) sequences to improve localization accuracy, but its performance is sensitive to PDR errors and radio map granularity. To mitigate the impact of drift-induced misalignment, a ±10° rotation-based correction method is proposed. Simulations are conducted under varying resolutions (1 m, 2 m, 3 m) and drift levels (0.1°, 0.3°, 0.5°) to evaluate positioning accuracy and computational efficiency. The proposed method demonstrates consistent performance improvement under all drift conditions and is especially effective with high-resolution radio maps. The findings provide practical guidance for designing SC-based positioning systems with optimized trade-offs between accuracy and efficiency.