Hirose, Yutaka A 250 m Direct Time-of-Flight Ranging System Based on a Synthesis of Sub-Ranging Images and a Vertical Avalanche Photo-Diodes (VAPD) CMOS Image Sensor. [electronic resource] - Sensors (Basel, Switzerland) Oct 2018 Publication Type: Journal Article ISSN: 1424-8220 Standard No.: 10.3390/s18113642 doi