| Volumes and Issues Contents of Issue 8 Special Issue |
www.ann-geophys.net/19/837/2001/
doi:10.5194/angeo-19-837-2001
© European Geosciences Union 2001
An improvement of wind velocity estimation from radar Doppler spectra in the upper mesosphere
1Radio Science Center for Space and Atmosphere, Kyoto University, Uji, Kyoto 611-0011, Japan
*Now at NTT DoCoMo, Inc.
Abstract. We have developed a new parameter estimation method for Doppler wind spectra in the mesosphere observed with an MST radar such as the MU radar in the DBS (Doppler Beam Swinging) mode. Off-line incoherent integration of the Doppler spectra is carried out with a new algorithm excluding contamination by strong meteor echoes. At the same time, initial values on a least square fitting of the Gaussian function are derived using a larger number of integration of the spectra for a longer time and for multiple heights. As a result, a significant improvement has been achieved with the probability of a successful fitting and parameter estimation above 80 km. The top height for the wind estimation has been improved to around 95 km. A comparison between the MU radar and the High Resolution Doppler Imager (HRDI) on the UARS satellite is shown and the capability of the new method for a validation of a future satellite mission is suggested.
Key words. Meteorology and atmospheric dynamics (middle atmosphere dynamics) – Radio science (remote sensing; signal processing)
Full Article (PDF, 806 KB)
Citation: Takeda, S., Nakamura, T., and Tsuda, T.: An improvement of wind velocity estimation from radar Doppler spectra in the upper mesosphere, Ann. Geophys., 19, 837-843, doi:10.5194/angeo-19-837-2001, 2001. Bibtex EndNote Reference Manager XML
