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Compound-Gaussian model with the inverse Gaussian texture (IG–CG) is recognized to be one of the best models to characterize high-resolution sea clutter at low grazing angles. The model parameters are often estimated by the second- and fourth-order amplitude sample moments, which are of low precision and easily interfered by outliers of high power such as returns of ships and reefs and sea spikes...
A control algorithm of diameter changing and constant weft density for tubular fabric was first presented in this paper, in which the RBF (Radial Basis Function, RBF) neural network was used to approximate the shape function of tubular fabric. And on the basis of this, the chart of how the rotation angle of diameter changing cam to change over the time was worked out, and the relationship between...
To solve oceanic environment problem caused by alien species invasion of ballast water, a novel approach of micro-pore ceramic filtration and UV radiation (MPCF&UV) was prompted. This work has studied on the MPCF&UV performance on small alga removal at the flow rate of 1~9m3/h. In the experiment, Chlorella Vulgaris, Nitzschia closterium, Platymonas subcordiformis were chosen as indicator organisms...
The object-oriented classification method of remote sensing image takes the characteristics of the imaging spectrum and differences in geometric characteristics into account, which can extract more accurate image information. Regard Cangzhou City in Hebei Province as the study area, and ASTER remote sensing image as the data source, first of all, the study area has been multi-scale segmented. It can...
Reasonable bandwidth is important for a wideband ballistic missile defence radar. The relationship between bandwidth and recognition ability has great reference value. The paper analyzed the bandwidth effect on the resolution on the range profile. Then the relation between the bandwidth and the recognition accuracy rate is studied and the effect of the shape, the amount and the dimension of the targets...
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