sparse sampling in array processing
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DESCRIPTION
Sparsely sampled irregular arrays and random arrays have been used or proposedin several fields such as radar, sonar, ultrasound imaging, and seismics. Westart with an introduction to array processing and then consider the combinatorialproblem of finding the best layout of elements in sparse 1-D and 2-D arrays. Theoptimization criteria are then reviewed: creation of beampatterns with low mainlobewidth and low sidelobes, or as uniform as possible coarray. The latter caseis shown here to be nearly equivalent to finding a beampattern with minimal peaksidelobes.