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23 May 2011 Navigation Doppler lidar sensor for precision altitude and vector velocity measurements: flight test results
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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.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Diego Pierrottet, Farzin Amzajerdian, Larry Petway, Bruce Barnes, George Lockard, and Glenn Hines "Navigation Doppler lidar sensor for precision altitude and vector velocity measurements: flight test results", Proc. SPIE 8044, Sensors and Systems for Space Applications IV, 80440S (23 May 2011); https://doi.org/10.1117/12.886826
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