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Electronic Warfare Receiver with Multiple FFT Frame Sizes

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4 Author(s)
Chi-Hao Cheng ; Electr. & Comput. Eng, Miami Univ., Oxford, OH, USA ; Lin, D.M. ; Liou, L.L. ; Tsui, J.B.

An electronic warfare (EW) receiver based on fast Fourier transforms (FFTs) with different frame sizes is presented. With a given sampling frequency, an FFT-based EW receiver can improve its frequency estimation by increasing the FFT frame size; however, such an increase has detrimental effects on its time-of-arrival and pulse width estimations. By applying multiple FFTs with different frame sizes, the proposed EW receiver can achieve high time and frequency resolutions simultaneously.

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Aerospace and Electronic Systems, IEEE Transactions on  (Volume:48 ,  Issue: 4 )