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The multi-circuit transmission lines on the same tower can be considered for solving the contradiction between the growing electricity demand and the limited line corridor. Take the 500kV/220kV four-circuit mixed-voltage transmission lines as an example, the maintenance circuit would have high induced voltage and induced current because of the strong electrostatic coupling and electromagnetic coupling...
Once the UHV transmission lines were put into operation, it is hard to repair at outage. The live working is the forceful guarantee for the security and stability of operation of the UHV transmission lines. The length of the UHV strain insulator string achieves about 12.5 m and the distance between the adjacent strings achieves about 1.0 m. As entering the strong electric field along the UHV strain...
Substrate Integrated Waveguide (SIW) will play an important role in mass production of millimeter-wave systems due to the low-cost, mass-producible, compact characteristic and easy to integrate with other planar circuits. It is necessary to estimate the fabrication yield in mass production. However, yield analysis is an impracticable task for the full-wave simulation method due to large computational...
We demonstrate that wavelet transform (WT)-OFDM without cyclic prefix has the similar BER performance with conventional Fourier transform (FT)-OFDM in VLC, while effectively improves the transmission distance by 20% due to less PAPR and better nonlinear tolerance.
In this paper, proposed a method for gait recognition based on the HMM. In this method sparse presentation is used and experience is done in CASIA B database, and all the study are based on this database. Firstly, a gait silhouette or feature cycle is divided into several temporally adjacent clusters. Each cluster is calculated and gets several adjacent PFDEI binary images. Secondly, Hidden Markov...
In this paper, a gait silhouette or feature cycle is divided into several temporally adjacent clusters. Each cluster is calculated and gets several adjacent PFDEI binary images. Embedded Hidden Markov mode (EHMM) is built to describe the relationship among the PFDEI. In every PFDEI state we divided several substate to describe the PFDEI image. Frame difference image is good chosen to describe substate...
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