期刊
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
卷 11, 期 3, 页码 592-596出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LGRS.2013.2272011
关键词
Differential Doppler velocity (DDV); radar echo from birds and insects; radar polarimetry
类别
资金
- NOAA/Office of Oceanic and Atmospheric Research under NOAA-University of Oklahoma through the U.S. Department of Commerce [NA11OAR4320072]
The differential Doppler velocities (DDVs) measured with weather radar at horizontal and vertical polarizations in echoes from insects and birds are considered. In weather echoes, DDV is usually less than 0.5 ms(-1), whereas in echoes from flying birds and insects, it can reach 5-7 ms(-1). Such large difference can be used as an additional parameter in distinguishing between weather and nonmeteorological echoes. It is shown that large values of DDV pertain to multipeaked Doppler spectra with different spectral differential reflectivity values in the peaks.
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