An optical image plane correlator is described which computes the ambiguity function for passive, wideband, complex, and basebanded signals. Quadrature input modulation, single-sideband filtering, and a modified image plane correlator requiring no moving parts are used to achieve the required complex correlations. The scenario, theory, and design are provided together with experimental verification on LFM and Barkercoded waveforms as well as synthetic data.
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Casasent et al. (1979) studied this question.
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