an improvement of wind velocity estimation from radar doppler spectra in the upper mesosphere
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ID: 244693
2001
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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)
Key words. Meteorology and atmospheric dynamics (middle atmosphere dynamics) – Radio science (remote sensing; signal processing)
| Reference Key |
takeda2001annalesan
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|---|---|
| Authors | ;S. Takeda;S. Takeda;T. Nakamura;T. Tsuda |
| Journal | journal of food measurement and characterization |
| Year | 2001 |
| DOI |
10.5194/angeo-19-837-2001
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| URL | |
| Keywords |
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