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Proceedings Paper

Navigation Doppler lidar sensor for precision altitude and vector velocity measurements: flight test results
Author(s): Diego Pierrottet; Farzin Amzajerdian; Larry Petway; Bruce Barnes; George Lockard; Glenn Hines
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Paper Abstract

An all fiber Navigation Doppler Lidar (NDL) system is under development at NASA Langley Research Center (LaRC) for precision descent and landing applications on planetary bodies. The sensor produces high-resolution line of sight range, altitude above ground, ground relative attitude, and high precision velocity vector measurements. Previous helicopter flight test results demonstrated the NDL measurement concepts, including measurement precision, accuracies, and operational range. This paper discusses the results obtained from a recent campaign to test the improved sensor hardware, and various signal processing algorithms applicable to real-time processing. The NDL was mounted in an instrumentation pod aboard an Erickson Air-Crane helicopter and flown over various terrains. The sensor was one of several sensors tested in this field test by NASA's Autonomous Landing and Hazard Avoidance Technology (ALHAT) project.

Paper Details

Date Published: 23 May 2011
PDF: 11 pages
Proc. SPIE 8044, Sensors and Systems for Space Applications IV, 80440S (23 May 2011); doi: 10.1117/12.886826
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, Coherent Applications, Inc. (United States)
Glenn Hines, NASA Langley Research Ctr. (United States)


Published in SPIE Proceedings Vol. 8044:
Sensors and Systems for Space Applications IV
Khanh D. Pham; Henry Zmuda; Joseph Lee Cox; Greg J. Meyer, Editor(s)

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