Author

Uttama Dutta

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Open access Oct 2026

Experimental characterization of GNSS carrier phase diffraction errors in a controlled environment

This study presents a rigorous analysis of signal diffraction, a pervasive yet often overlooked error source in high-precision GNSS positioning. The research uses a controlled environment and an extensive data set. Using a movable wall of constant height, we demonstrate that diffraction impact is inversely proportional...

Uttama Dutta, J. Johansson, Rüdiger Haas et al. · GPS Solutions · 0 citations

Open access

GNSS Signal Diffraction Effects in High Precision Positioning.

High-precision GNSS is fundamental to modern geodesy. Standard processing assumes line-of-sight signal propagation, treating residual non-line-of-sight effects as multipath or random noise. This thesis shows that diffraction caused by signal bending around obstacles, is a distinct, deterministic error source that biase...

Uttama Dutta · 0 citations