Liu Zhaohui

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The highlight number of an underwater target is one of important features for the underwater target classification and recognition. However, the highlight number feature extraction is easily affected by the target bearing and there is always a blind area near the vertical azimuth angle. By analyzing the highlight structure of an underwater target echo, a(More)
In the plain areas of China, in order to avoid freeway transverse traffic disturbance, when design passages or culverts, it usually designs high embankment for passages or culverts. If embankment is low, it is difficulty for passages or culverts to drain water. Hengshui to Daming freeway in Hebei Provence (Heng-Da freeway) is one section of Daqing to(More)
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