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All-optical wavelength conversion (AOWC) for 160Gbps polarization division multiplexing OFDM (PDM-OFDM) 16QAM signal in semiconductor optical amplifier (SOA) is theoretically simulated and realized in this paper. An external cavity laser is employed as the dual-pump seed. The measured result shows that the polarization insensitive converted signals can be achieved based on coherent detection without...
With the development of high-resolution imagery, ship detection in optical satellite images has attracted a lot of research interest because of the broad applications in fishery management, vessel salvage, etc. Major challenges for this task include cloud, wave, and wake clutters, and even the variability of ship sizes. In this letter, we propose an unsupervised ship detection method toward overcoming...
Angular acceleration feedback will help improve dynamic transparency and reduce non-linear behavior of flight motion simulator axes motions. FIR and Kalman angular acceleration estimator design method are investigated in this paper. A detailed performance comparison is proposed and the results indicate the angular acceleration estimators present an effective routine to produce the high fidelity flight...
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