A coherent Doppler lidar has been developed to support future NASA missions to planetary bodies. The lidar transmits three laser beams and measures line-of-sight range and velocity along each beam using a frequency modulated continuous wave (FMCW) technique. Accurate altitude and velocity vector data, derived from the line-of-sight measurements, enables the landing vehicle to precisely navigate from several kilometers above the ground to the designated location and execute a gentle touchdown. The same lidar sensor can also benefit terrestrial applications that cannot rely on GPS or require surface-relative altitude and velocity data.


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    Title :

    Coherent Doppler Lidar for Measuring Velocity and Altitude of Space and Aerial Vehicles


    Contributors:

    Conference:

    Coherent Laser Radar Conference ; 2016 ; Boulder, CO, United States


    Publication date :

    2016-06-26


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




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