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Motivated by nested-lattice-based physical-layer network coding, this paper considers communication in multiplicative matrix channels over finite chain rings. Such channels are defined by the law Y = AX, where X and Y are the input and output matrices, respectively, and A is called the transfer matrix. We assume that the instances of the transfer matrix are unknown to the transmitter, but available...
Based on the concept of nominal effort miss (NEM), a guidance law for boost phase is proposed to handle the situation when the solid rocket motor in the tactical missile must be used up. On the foundation of zero effort miss (ZEM), NEM is defined and the differences between them are compared. By means of the trajectory prediction and the property of NEM, a calculation approach to NEM is derived. In...
In this paper, a complex Curvelet transform is presented at first. The key innovation can be generalized as follows:2D and 1D complex wavelet transform instead a?? trous algorithm sub-band decomposition and 1D wavelet transform respectively, and increase the sampling rate during the 1D IFFT. So the new complex Curvelet transform has non-aliasing performance, and can avoid "scratch" and "embedded...
This paper employs a hybrid numerical method combining the differential transformation method and the finite difference method to study the dynamic behavior of a rigid rotor supported by a micro gas journal bearing system. The analytical results reveal a complex dynamic behavior comprising periodic, sub-harmonic, and quasi-periodic responses of the rotor center. Furthermore, the results reveal the...
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