Technical flowchart of Doppler velocity determination in the urban area using the GS-LASSO (IMAGE)

Tsinghua University Press

Technical flowchart of Doppler velocity determination in the urban area using the GS-LASSO

Caption

The method inputs Doppler observations, satellite positions (from ephemeris), elevation angles, azimuth angles, and C/N₀ values. It groups potential multipath/NLOS faults using elevation, azimuth proximity, and C/N₀ thresholds. A Group LASSO model (with atan-cost functions) is solved via ADMM to detect and estimate faults. The corrected observations yield enhanced velocity estimates resilient to urban errors.

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Chinese Journal of Aeronautics

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