TY - JOUR
T1 - Approaches for Improved Doppler Estimation in Lidar Remote Sensing of Atmospheric Dynamics
AU - Bhaskaran, Sreevatsan
AU - Calhoun, Ronald
N1 - Publisher Copyright:
© 2016 Owned by the authors, published by EDP Sciences.
PY - 2016/6/7
Y1 - 2016/6/7
N2 - Laser radar (Lidar) has been used extensively for remote sensing of wind patterns, turbulence in the atmospheric boundary layer and other important atmospheric transport phenomenon. As in most narrowband radar application, radial velocity of remote objects is encoded in the Doppler shift of the backscattered signal relative to the transmitted signal. In contrast to many applications, however, the backscattered signal in atmospheric Lidar sensing arises from a multitude of moving particles in a spatial cell under examination rather than from a few prominent "target" scattering features. This complicates the process of extracting a single Doppler value and corresponding radial velocity figure to associate with the cell. This paper summarizes the prevalent methods for Doppler estimation in atmospheric Lidar applications and proposes a computationally efficient scheme for improving Doppler estimation by exploiting the local structure of spectral density estimates near spectral peaks.
AB - Laser radar (Lidar) has been used extensively for remote sensing of wind patterns, turbulence in the atmospheric boundary layer and other important atmospheric transport phenomenon. As in most narrowband radar application, radial velocity of remote objects is encoded in the Doppler shift of the backscattered signal relative to the transmitted signal. In contrast to many applications, however, the backscattered signal in atmospheric Lidar sensing arises from a multitude of moving particles in a spatial cell under examination rather than from a few prominent "target" scattering features. This complicates the process of extracting a single Doppler value and corresponding radial velocity figure to associate with the cell. This paper summarizes the prevalent methods for Doppler estimation in atmospheric Lidar applications and proposes a computationally efficient scheme for improving Doppler estimation by exploiting the local structure of spectral density estimates near spectral peaks.
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U2 - 10.1051/epjconf/201611917015
DO - 10.1051/epjconf/201611917015
M3 - Conference article
AN - SCOPUS:84976320624
SN - 2101-6275
VL - 119
JO - EPJ Web of Conferences
JF - EPJ Web of Conferences
M1 - 17015
T2 - 27th International Laser Radar Conference, ILRC 2015
Y2 - 5 July 2015 through 10 July 2015
ER -