2 December 1992 Instantaneous frequency measurement correlators using optical approach
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Preliminary results of a study aimed at the development of a simultaneous signal instantaneous frequency measurement (IFM) receiver using optical implementation methods are reported. A method for detecting simultaneous signals in an IFM receiver is briefly reviewed. Two architectures (coherent and incoherent) for optical phase correlators are then described and compared. Some considerations concerning the practical implementation of the two architectures are discussed.
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I.-Chang Chang, I.-Chang Chang, James Y.B. Tsui, James Y.B. Tsui, } "Instantaneous frequency measurement correlators using optical approach", Proc. SPIE 1703, Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III, (2 December 1992); doi: 10.1117/12.138370; https://doi.org/10.1117/12.138370

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