Approaches for Improved Doppler Estimation in Lidar Remote Sensing of Atmospheric Dynamics

Sreevatsan Bhaskaran, Ronald Calhoun

Research output: Contribution to journalConference articlepeer-review


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.

Original languageEnglish (US)
Article number17015
JournalEPJ Web of Conferences
StatePublished - Jun 7 2016
Event27th International Laser Radar Conference, ILRC 2015 - New York, United States
Duration: Jul 5 2015Jul 10 2015

ASJC Scopus subject areas

  • General Physics and Astronomy


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