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Hyperspectral imagery offers an effective way to automatically mapping of surface sediment types in the intertidal flat. The objective of this study is to determine the possibility of mapping sediment types in the southern Sheyang River mouth, Jiangsu Province from Hyperion satellite data with linear spectral unmixing method. Results indicate that the mapping was achieved at an overall accuracy of...
According to the nonlinear amplification characteristic with memory effection of power amplifier (PA) in WCDMA systems, digital predistorter model is established and an identification algorithm for Wiener PA model with memory is proposed. The method can avoid the local convergence problem of NG algorithm effectively. Moreover it has a very good suppression of signal spectral regrowth. Theoretical...
Taken guided rocket bomb as the research object and aimed at trajectory correction, the kinematics model of guided rocket bomb is established and a strap down inertial navigation system(SINS) is designed using MEMS inertial sensors. According to the output data of guidance system, a differential geometry algorithm is proposed to calculate the curvature of the actual trajectory. Compared it with the...
The improved GE method has been used to evaluate the spatial-domain Green's function of the shielded structures. However, for some cases, the spectral-domain Green's function decays slowly and is very difficult to be accurately approximated by the GPOF used in the improved GE method. This subsequently deteriorates the accuracy and stability of this method. In this paper, we devise a scheme that the...
In this letter, we adopt a new procedure in the calculation of the layered Green's functions in the rectangular waveguide structure. In this procedure, the surface-wave poles are extracted first, and then the generalized pencil-of-function (GPOF) method is applied to approximate the spectral-domain Green's function along the real axis of the plane directly. Because no branch point is introduced in...
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