期刊
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
卷 53, 期 12, 页码 6518-6528出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TGRS.2015.2443131
关键词
Aeroecology; NEXRAD; polarimetry; velocity-azimuth display (VAD)
类别
资金
- National Institute for Food and Agriculture of the U.S. Department of Agriculture [2013-67009-20369]
- U.S. National Science Foundation [EF-1340921]
- Emerging Frontiers
- Direct For Biological Sciences [1340921] Funding Source: National Science Foundation
- NIFA [2013-67009-20369, 578039] Funding Source: Federal RePORTER
Seasonal animal migration is characterized by aligned flight of airborne organisms across large spatial expanses. This large-scale alignment results in azimuthal patterns in polarimetric radar products. The following overviews some such patterns and introduces a technique for obtaining vertical profiles of migrant flight orientation by exploiting azimuthal symmetries in the polarimetric radar product of copolar correlation coefficient. HV. This method is compared with several Doppler-velocity based techniques for measuring flight direction, and a sensitivity analysis is performed. Finally, the method is applied to a case of nocturnal migration over the Southern Great Plains, demonstrating the utility of the technique in the study of animal migratory behavior within the airspace.
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