Open AccessNavigation Doppler lidar sensor for precision altitude and vector velocity measurements: flight test results
Author(s) -
Diego F. Pierrottet,
Farzin Amzajerdian,
Larry Petway,
Bruce W. Barnes,
George E. Lockard,
Glenn D. Hines
Publication year - 2011
Publication title -
proceedings of spie, the international society for optical engineering/proceedings of spie
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.192
H-Index - 176
eISSN - 1996-756X
pISSN - 0277-786X
DOI - 10.1117/12.886826
Subject(s) - lidar , remote sensing , doppler effect , computer science , flight test , heading (navigation) , instrumentation (computer programming) , terrain , descent (aeronautics) , range (aeronautics) , aerospace engineering , environmental science , geodesy , simulation , geology , physics , engineering , astronomy , ecology , biology , operating system
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.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom