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- W2406544100 abstract "The ability to detect motion and to track a moving object that is hidden around a corner or behind a wallprovides a crucial advantage when physically going around the obstacle is impossible or dangerous. One recentlydemonstrated approach to achieving this goal makes use of non-line-of-sight picosecond pulse laser ranging.This approach has recently become interesting due to the availability of single-photon avalanche diode (SPAD)receivers with picosecond time resolution. We present a time-resolved non-sequential ray-tracing model and itsapplication to indirect line-of-sight detection of moving targets. The model makes use of the Zemax opticaldesign programme's capabilities in stray light analysis where it traces large numbers of rays through multiplerandom scattering events in a 3D non-sequential environment. Our model then reconstructs the generatedmulti-segment ray paths and adds temporal analysis. Validation of this model against experimental results isshown. We then exercise the model to explore the limits placed on system design by available laser sources anddetectors. In particular we detail the requirements on the laser's pulse energy, duration and repetition rate, andon the receiver's temporal response and sensitivity. These are discussed in terms of the resulting implicationsfor achievable range, resolution and measurement time while retaining eye-safety with this technique. Finally,the model is used to examine potential extensions to the experimental system that may allow for increasedlocalisation of the position of the detected moving object, such as the inclusion of multiple detectors and/ormultiple emitters." @default.
- W2406544100 created "2016-06-24" @default.
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- W2406544100 date "2016-05-17" @default.
- W2406544100 modified "2023-10-10" @default.
- W2406544100 title "Time-resolved non-sequential ray-tracing modelling of non-line-of-sight picosecond pulse LIDAR" @default.
- W2406544100 doi "https://doi.org/10.1117/12.2223589" @default.
- W2406544100 hasPublicationYear "2016" @default.
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