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A novel phase unwrapping method is proposed that can be used in digital holograms, magnetic resonance imaging and synthetic aperture radar interferometry. Phase unwrapping is often an essential task for images with periodic phases, and its result directly affects the measurement precision. However, the path-independent unwrapped results generally cannot be obtained owing to the inconsistencies of...
In this paper, a sparsity-driven auto-focus technique is developed for radar/sonar imaging by exploiting the continuity structure of the target scene under Bayesian framework. After range compression, structured sparse prior is imposed in a statistical manner on each range cell to encourage the continuities in cross-range domain by clustering the scatterers with nonzero magnitudes. Based on a statistical...
A signal may not be detected and identified due to the presence of serious noise. Coherent integration is an important approach for focusing the energy of the signal in pulse-Doppler radar. For moving targets, the problem of migration through range cells (MTRC) will degrade the coherent integration result. This paper presents a new coherent integration method for multi-channel radar system to focus...
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