30 August 2005 Performance testing of an Active Boresight Mechanism for use in the CALIPSO space bourne LIDAR mission
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Proceedings Volume 5877, Optomechanics 2005; 58770X (2005) https://doi.org/10.1117/12.614516
Event: Optics and Photonics 2005, 2005, San Diego, California, United States
The CALIPSO LIDAR utilizes a receiver telescope with a narrow Field-of-View (FOV) to reject background light and meet SNR requirements - FOV ≈ 130 μrad. To maximize SNR the laser is collimated (divergence ≈100 μrad) and must be aligned to the receiver telescope FOV to within +/- 12 μrad (allocated). To make accurate LIDAR measurements the receiver/laser alignment must not vary by more than +/- 10 μrad (allocated) over an orbit. To make accurate depolarization measurements of clouds, the polarization axis of the laser must be aligned to within +/- 0.5 degrees (allocated) relative to the aft optical bench polarization axis and maintain alignment throughout the motion of the boresight adjustment range. The Active Boresight Mechanism provides a means of re-aligning the laser to the telescope on-orbit. A comprehensive performance testing campaign demonstrated that the Active Boresight Mechanism met or exceeded requirements. On-orbit performance results are imminent, as CALIPSO is scheduled for launch this Fall.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Chris Seckar, Chris Seckar, Larry Guy, Larry Guy, Angela DiFronzo, Angela DiFronzo, Carl Weimer, Carl Weimer, } "Performance testing of an Active Boresight Mechanism for use in the CALIPSO space bourne LIDAR mission", Proc. SPIE 5877, Optomechanics 2005, 58770X (30 August 2005); doi: 10.1117/12.614516; https://doi.org/10.1117/12.614516

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