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math.FA2026
New Fractional Ambiguity Function Integrated with CNN-Based Machine Learning for Signal Classification
Aamir H. Dar, Prakhar Kumar Sonkar, Neeraj Kumar Sharma
A new fractional ambiguity function (NFrAF) derived from the fractional Fourier transform is introduced as a generalization of the classical ambiguity function. The fundamental ana…
math.FA2025
Advanced Wigner Distribution and Ambiguity Function in the Quadratic-phase Fourier Transform Domain: Mathematical Foundations and Practical Applications
Aamir H. Dar, Neeraj Kumar Sharma
In non-stationary signal processing, prior work has incorporated the quadratic-phase Fourier transform (QPFT) into the ambiguity function (AF) and Wigner distribution (WD) to enhan…
math.FA2024
Discrete Quaternion Quadratic Phase Fourier Transform
Aamir Hamid Dar
A novel addition to the family of integral transforms, the quadratic phase Fourier transform (QPFT) embodies a variety of signal processing tools, including the Fourier transform (…