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Proceedings Paper

Flight test performance of a high precision navigation Doppler lidar
Author(s): Diego Pierrottet; Farzin Amzajerdian; Larry Petway; Bruce Barnes; George Lockard
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Paper Abstract

A navigation Doppler Lidar (DL) was developed at NASA Langley Research Center (LaRC) for high precision velocity measurements from a lunar or planetary landing vehicle in support of the Autonomous Landing and Hazard Avoidance Technology (ALHAT) project. A unique feature of this DL is that it has the capability to provide a precision velocity vector which can be easily separated into horizontal and vertical velocity components and high accuracy line of sight (LOS) range measurements. This dual mode of operation can provide useful information, such as vehicle orientation relative to the direction of travel, and vehicle attitude relative to the sensor footprint on the ground. System performance was evaluated in a series of helicopter flight tests over the California desert. This paper provides a description of the DL system and presents results obtained from these flight tests.

Paper Details

Date Published: 6 May 2009
PDF: 9 pages
Proc. SPIE 7323, Laser Radar Technology and Applications XIV, 732311 (6 May 2009); doi: 10.1117/12.821902
Show Author Affiliations
Diego Pierrottet, Coherent Applications, Inc. (United States)
Farzin Amzajerdian, NASA Langley Research Ctr. (United States)
Larry Petway, NASA Langley Research Ctr. (United States)
Bruce Barnes, NASA Langley Research Ctr. (United States)
George Lockard, NASA Langley Research Ctr. (United States)


Published in SPIE Proceedings Vol. 7323:
Laser Radar Technology and Applications XIV
Monte D. Turner; Gary W. Kamerman, Editor(s)

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