1. See http://www.ll.mit.edu/publications/journal/pdf/vol15_no1/15_1jigsaw.pdf
2. See Princeton Lightwave Inc. website at http://www.princetonlightwave.com.
3. A photon-counting time-of-flight ranging technique developed for the avoidance of range ambiguity at gigahertz clock rates;Hiskett,2009
4. A technology review of time-of-flight photon counting for advanced remote sensing;Lamb,2010
5. Design considerations for high-altitude altimetry and lidar systems incorporating single-photon avalanche diode detectors;Hiskett,2011