Morsy, A., Blinder, D., & Kuijk, M. (2026). Multi-Path Interference Challenges and Suggested Solution for Correlation-Assisted Direct Time-of-Flight. Sensors, 26(9), Article 2697. https://doi.org/10.3390/s26092697

@article{9e82e72922f64b80871669fae33b364f,
title = "Multi-Path Interference Challenges and Suggested Solution for Correlation-Assisted Direct Time-of-Flight",
abstract = "The correlation-assisted direct time-of-flight (CA-dToF) pixel offers a promising approach for low-power consumption, ambient light robustness, and high-resolution depth sensing. However, as with other time-of-flight systems based on global phase estimation, its reliability is compromised by multi-path interference (MPI) of the emitted light, leading to depth estimation errors. In this work, the impact of MPI on CA-dToF pixel performance is systematically analyzed. Furthermore, a multi-frequency modulation algorithm is proposed to mitigate MPI effects. The proposed method improves depth accuracy and enhances the overall reliability of the CA-dToF system.",
author = "Ayman Morsy and David Blinder and Maarten Kuijk",
note = "Publisher Copyright: {\textcopyright} 2026 by the authors.",
year = "2026",
month = apr,
day = "27",
doi = "10.3390/s26092697",
language = "English",
volume = "26",
journal = "Sensors",
issn = "1424-8220",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "9",
}