The development of a correlation-assisted direct time-of-flight (CA-dToF) pixel provides a novel solution for time-of-flight applications that combines low power consumption, robust ambient shot noise suppression, and a compact design. However, the pixel{\textquoteright}s implementation introduces systematic errors, affecting its performance. We investigate the pixel{\textquoteright}s robustness against various noise sources, including timing jitter, kTC noise, switching noise, and photon shot noise. Additionally, we address limitations such as the SPAD deadtime, and source follower gain mismatch and offset, identifying their impact on performance. The paper also proposes solutions to enhance the pixel{\textquoteright}s overall reliability and to improve the pixel{\textquoteright}s implementation.
Morsy, A, Vrijsen, J, Coosemans, J, Bruneel, T & Kuijk, M 2025, 'Noise Analysis for Correlation-Assisted Direct Time-of-Flight', Sensors, vol. 25, no. 3, 771. https://doi.org/10.3390/s25030771
Morsy, A., Vrijsen, J., Coosemans, J., Bruneel, T., & Kuijk, M. (2025). Noise Analysis for Correlation-Assisted Direct Time-of-Flight. Sensors, 25(3), Article 771. https://doi.org/10.3390/s25030771
@article{8117d52d3ed64c6c87acf20f27456ec3,
title = "Noise Analysis for Correlation-Assisted Direct Time-of-Flight",
abstract = "The development of a correlation-assisted direct time-of-flight (CA-dToF) pixel provides a novel solution for time-of-flight applications that combines low power consumption, robust ambient shot noise suppression, and a compact design. However, the pixel{\textquoteright}s implementation introduces systematic errors, affecting its performance. We investigate the pixel{\textquoteright}s robustness against various noise sources, including timing jitter, kTC noise, switching noise, and photon shot noise. Additionally, we address limitations such as the SPAD deadtime, and source follower gain mismatch and offset, identifying their impact on performance. The paper also proposes solutions to enhance the pixel{\textquoteright}s overall reliability and to improve the pixel{\textquoteright}s implementation.",
keywords = "pixel noise analysis, Single-photon avalanche diodes, time-of-flight, LiDAR, depth sensing",
author = "Ayman Morsy and Jonathan Vrijsen and Jan Coosemans and Tuur Bruneel and Maarten Kuijk",
note = "Publisher Copyright: {\textcopyright} 2025 by the authors.",
year = "2025",
month = jan,
day = "27",
doi = "10.3390/s25030771",
language = "English",
volume = "25",
journal = "Sensors",
issn = "1424-8220",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "3",
}