The Neptec Three-Dimensional Laser Camera System: From Space Mission STS-105 to Terrestrial Applications

Abstract

Neptec Design Group has developed the Laser Camera System (LCS), a three-dimensional auto-synchronized laser scanner based on a principle originating from the National Research Council of Canada. In imaging mode, the LCS raster scans objects and captures reflections from their surface features. In centroid acquisition mode, the LCS determines the position of discrete target points on an object. Neptec Design Group first developed the LCS for space applications. In August 2001, the LCS flew successfully onboard space shuttle Discovery during mission STS-105 to the International Space Station (ISS). During the mission, the LCS took four high-resolution (1024 × 1024 voxels) images of elements of the ISS during orbital day and night, demonstrating its immunity to dynamic lighting conditions. The LCS also tracked targets affixed to the Multi-Purpose Logistics Module (MPLM) while in motion, more than 10 m away. Comparison with Space Station Remote Manipulator System (SSRMS) data confirmed that the LCS tracked these targets with millimetre precision. continued on page 116