utility of Time-frequency (TF) analysis for GMTI applications
سال انتشار: 1399
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 310
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شناسه ملی سند علمی:
ITCT09_008
تاریخ نمایه سازی: 6 شهریور 1399
چکیده مقاله:
A time series representation is usually the first and most natural description of a signal .However, in order to extract the information present and use it to its full potential, one may analyze the signal using various data representations. Time-frequency analysis is a powerful tool which may be used in signal detection, characterization, and processing. The signal character differences between a moving target and a stationary target can be revealed in the time-frequency domain. Motions of a moving target changes the Doppler centroid and Doppler modulation rate of the moving target, and time-frequency analysis algorithms are highly efficient in extracting the motion parameters. Understanding the Doppler frequency shift induced in SAR signal returns is essential in appreciating the utility of TF analysis for GMTI applications.
کلیدواژه ها:
synthetic aperture radar (SAR) ، ground moving target indication (GMTI) ، ground moving target imaging (GMTIm) ، time-frequency representation
نویسندگان
Andisheh moezzi
Department of Electrical and Computer Engineering, shiraz University, shiraz, Iran
Mohamad Ali Masnadi-Shirazi
Department of Electrical and Computer Engineering , shiraz University, shiraz, Iran