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This article analyses the characteristic of time frequency distribution of laser detection signals of underwater acoustic signal, we discover the regularity of wavelet ridges distribution of laser interference signal: some wavelet ridges distribute on the scale-time curve which is corresponding with the frequency of underwater acoustic signal, or(More)
A Collaborative Design Frame based on Virtual Prototype and virtual Manufacturing (CDFVPM) is explored. In CDFVPM, the Virtual Product Prototype (VPP) used as a product shared information database, and to view the product during design process before creation of any physical prototype, to detect the product's performance by simulating the product's working(More)
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