Flight test performance of a high precision navigation Doppler lidar

作者：Diego F. Pierrottet, Farzin Amzajerdian, Larry B. Petway, Bruce W. Barnes, George E. Lockard · 发表于：Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 年份：2009 · DOI：10.1117/12.821902 · 被引用次数：42 · 研究领域：Advanced Optical Sensing Technologies、Atmospheric aerosols and clouds、Target Tracking and Data Fusion in Sensor Networks

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.