January 28-30, 2019 | Hyatt Regency | Denver, CO

Good Timing

Jan 29 2019
11:10 am - 11:30 am
Centennial F-H

Good Timing

To date, single photon LiDAR (SPL) sensors have evolved over a decade from single detector systems to imaging arrays, and from ground-based systems to space-borne missions. One of the key technologies that have enabled this technical evolution is multichannel, field-programmable gate array (FPGA) based timers capable of picosecond-level resolution and sub-nanosecond repeat measurements. The use of timing to determine both range and intensity for each return will be discussed. Its application to multiple detector technologies, including photomultipliers, single-photon avalanche diodes (SPADs), and discrete amplification photon detector (DAPDs) will be presented, as well as reviewing the architecture used in the Advanced Topographic Laser Altimeter System (ATLAS), the LiDAR sensor flying on NASA’s ICESat-2 mission.

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