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Far-field beam-forming is applied in the detection system of large-aperture optical towed linear arrays to estimate the direction of targets. Actually, for a large-aperture line array, multiple targets are located in near-field. In these circumstances, if we still use far-field beam-forming for approximate processing, it will cause bearing-amplitude distortion which seriously influences the precision...
Distortion of array shape must be taken into account in large aperture optical towed array signal processing. The amount of distortion of an array shape will influence the performance of subsequent signal processing. The null-forming technique is a strong interference suppression method widely used in towed linear array detection systems, and plays an important role in ship interference cancellation...
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