| Passive millimeter-wave imaging is a hot research in the field of Millimeter wave in the 90' s. Current imaging systems have problems in low spatial resolution and poor sensitivity. As the millimeter-wave imaging technology being used more and more extensive, the requiring with the quality of millimeter-wave image has enhanced recent years. An algorithm is needed to restore the degrading millimeter-wave image, under the condition of present hardware.Firstly we discuss the common theory and principles of passive millimeter-wave imaging and analyze several qualification of it; secondly, imaging model of millimeter-wave image system and degradation cause of millimeter-wave image are educed combining with the principle of millimeter-wave image system; thirdly, studying the method of millimeter-wave image. Starting with degradation cause of millimeter-wave image, we advance a kind of millimeter-wave image super-resolution algorithm which is based on projection onto convex sets (POCS). Then we have studied out the scheme of the super-resolution algorithm. At last we discuss the feasibility, validity , astringency and the way of choose of parameter of the algorithm, and educe the result via experimentation. |
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