What question did this study set out to answer?

This study aims to compare the positioning performance of Doppler-based techniques for enhancing smartphone GNSS accuracy.

May 17, 2026Journal of the Korean Society of Surveying Geodesy Photogrammetry and Cartography

Comparison of Doppler-based techniques for improving smartphone GNSS positioning performance

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Authors

MKMyeongwoo Kim SYSungwoong Yun JKJay Hyoun KwonUniversity of Seoul

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Implication

Randomized trial compares Doppler-based techniques for enhanced GNSS positioning accuracy in smartphones, suggesting a state-estimation approach is optimal.

Key Points

This study aims to compare the positioning performance of Doppler-based techniques for enhancing smartphone GNSS accuracy.
Compared two Doppler-based techniques: range-domain Doppler smoothing and position-domain EKF.
Estimated bias in Doppler observations and applied it to both methods.
Designed a filter using a system-noise covariance matrix based on accelerometer observations.
Doppler smoothing reduced maximum error but had a limited effect on mean horizontal error.
The EKF improved both mean and maximum errors consistently, especially in signal-degraded conditions.
Suggests a state-estimation approach is more effective for smartphone GNSS positioning in pedestrian environments.

Cite This Study

Kim et al. (2026) studied this question.

synapsesocial.com/papers/6a095c3f7880e6d24efe2496 https://doi.org/10.7848/ksgpc.2026.44.2.127

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Implication

Randomized trial compares Doppler-based techniques for enhanced GNSS positioning accuracy in smartphones, suggesting a state-estimation approach is optimal.

Comparison of Doppler-based techniques for improving smartphone GNSS positioning performance

Discussion

Member takes

Implication

Key Points

Cite This Study

Comparison of Doppler-based techniques for improving smartphone GNSS positioning performance

Discussion

Member takes

Implication

Key Points

Cite This Study

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