High resolution Doppler Lidar - Maritime/Shipbuild/Water Transport - Sea and Marine Monitoring
High resolution Doppler Lidar
The Doppler Lidar is an active remote sensing instrument which provides high range-resolution and time-resolution measurements of radial velocity, attenuated back-scatter and signal-to-ratio (SNR). The system operates by emitting an eye-safe laser beam into the atmosphere and measure the echo signal after the energy scattered back to the transceiver. The radial or line of sight velocity of the scatters is determined from the Doppler shift of the back-scattered radiation.
The Doppler Lidar operates in the near-infrared (1550nm) and is sensitive to backscatter from micro-size aerosols. Aerosols are ubiquitous in the lower troposphere and behave as ideal tracers of atmospheric winds. Different from the radars, the Doppler Lidar is capable of measuring radial wind velocity under clear-sky conditions with very good precision. The Doppler Lidars with 3D scanning functions enable three-dimensional mapping of turbulent flows in the atmospheric boundary layer. Withe the scanner, the systems are able to measure the target with ant preset azimuth and elevation angles.