An improvement of wind velocity estimation from radar Doppler spectra in the upper mesosphere
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 contami...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2001-08-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/19/837/2001/angeo-19-837-2001.pdf |
| Summary: | 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.<br><br><b>Key words. </b>Meteorology and
atmospheric dynamics (middle atmosphere dynamics) – Radio science (remote
sensing; signal processing) |
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| ISSN: | 0992-7689 1432-0576 |