Short Courses
AMS Short Course
‘Wind profiler’
Date: 15 September 2019
Time Schedule:
10:00-13:00, including time for free discussion.
Location: Conference Room 8 (The first floor of the annex building.)
Instructors:
YAMAMOTO Masayuki,
Remote Sensing Laboratory, Applied Electromagnetic Research Institute, National Institute of Information and Communications Technology (NICT), Japan
Volker LEHMANN
Meteorologisches Observatorium Lindenberg, Deutscher Wetterdienst (DWD)
Preparations:
Basic knowledge of weather radar or other radars is preferable, but not necessary.
Description:
Wind profiler radar (WPR), also referred to as radar wind profiler (RWP), is a remote sensing instrument used for measuring height profiles of vertical and horizontal wind velocity in the clear air. Perturbations of temperature and humidity caused by atmospheric turbulence is a major source that produces refractive index irregularities. Refractive index irregularities with a scale of half the radar wavelength are scatterer that produces echoes detected by WPR. WPR generally measures wind velocity from Doppler shift of the echo.
Owing to the capability of measuring wind and turbulence with high time and height resolution, WPRs have been used for researches such as gravity waves, turbulence, precipitation system, and so on. WPRs have also been used in weather service aiming at weather monitoring and forecasting.
Emerging techniques provide opportunities of increasing measurement capability of WPRs. Frequency domain interferometry, also referred to as range imaging, enhances range resolution by using frequency diversity. Spatial domain interferometry, also referred to as coherent radar imaging, attains angular resolution enhancement by using adaptive array antennas. Adaptive clutter suppression mitigates clutter contamination in the received signal by using subarray antennas. The subarray antennas are used for adaptively controlling the side lobes of the receiving antenna.
This short course aims at providing basic knowledge for users of wind data measured by WPR, for persons in charge of operating WPR, and for WPR system developers. It treats measurement principle, measurement system, and scientific and practical applications of WPR.
Information: Please contact Masayuki Yamamoto (National Institute of Information and Communications Technology).
Email: yamamoto.masayuki(at)nict.go.jp (at)=@