Journal
PRIME 2022: 17TH INTERNATIONAL CONFERENCE ON PHD RESEARCH IN MICROELECTRONICS AND ELECTRONICS
Volume -, Issue -, Pages 313-316Publisher
IEEE
DOI: 10.1109/PRIME55000.2022.9816826
Keywords
Single Photon Avalanche Diode (SPAD); Light Detection And Ranging (LiDAR); direct time-of-flight (d-ToF)
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Funding
- European Space Agency
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This article presents the results of Monte Carlo simulations and measurements on two techniques aimed at reducing background light in SPAD-based LiDAR systems: the photon coincidence technique and the Auto-Sensitivity (AS) technique. The photon coincidence technique outperforms the AS technique, and when used together, the maximum achievable measurement range is increased.
We present the results of Montecarlo simulations and measurements focusing on the analysis of two techniques aimed at reducing the negative effect of background light in Single Photon Avalanche Diode (SPAD)-based Light Detection And Ranging (LiDAR) systems. The first technique, known as photon coincidence technique, exploits the temporal proximity of multiple detections to reject background light and maximize the detection of photons belonging to the target reflection. The second technique, named Auto-Sensitivity (AS) technique, reduces the photon-detection probability (PDP) if a certain background illumination level is detected, to avoid the risk of saturating SPADs due to intense background level. The two methods are first compared to each other, showing that the photon coincidence technique outperforms the AS technique. Then, the two techniques are operated together, resulting in an increase of the maximum achievable measurement range if the AS technique is applied on top of the photon coincidence technique.
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