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Trust is an important topic in information security research and is oriented to increase the reliability and performance of a web-based system in open networks. A trustworthy e-learning system is a trust-based learning system which contains reliable serving peers and useful learning resources. In this paper, a survey of trust researches in trust management(More)
This paper develops a technique for fusing data from millimeter wave (MMW) radar and infrared (IR) sensor to track maneuvering target. Modified extended Kalman filter (MEKF) is simple yet very effective in accounting for the measurement nonlinearities. The idea of fusion is to combine MEKF with pseudo sequential filter to obtain optimum state estimates. The(More)
  • Youli Wu, Huili Fan
  • 2015
Traditional algorithms of HF burst signal detection and synchronization acquisition usually can't work well under low signal noise ratio (SNR). Aiming at the character of HF channel, a reliable synchronization acquisition scheme for HF channels based on spectrum analysis method was obtained by modulated m-sequences pilots to get some dispreading gains. The(More)
In order to solve the problem of the distance estimation of the infrared passive system, a distance estimation algorithm is proposed based on the optimal estimation theory of structure stochastic jump system. Considered the rapidity and the limit of the internal storage capacity of the algorithm, a simplified algorithm is derived. And the ability of the(More)
The Lyapunov exponent spectra of the axial-flow compression system's Moore-Greitzer model were researched with chaos theory. When the parameter B of the MG model is greater (surge) or smaller (stall), the system's Lyapunov exponent spectra are all (0, -). So the compressor's working points are all on a limit circle, when the compressor is in the state of(More)
Based on multisensor information fusion theory and optimal control theory of structure stochastic jump system, a new guidance law is proposed for air-to-air missiles based on information fusion of active radar and infrared sensor, and its validity is testified by analysis on simulation by building digital model of missiles. Compared with proportion(More)
In this paper, a fast smooth second-order sliding mode control is presented for a class of stochastic systems with enumerable Ornstein-Uhlenbeck colored noises. The finite-time mean-square practical stability and finite-time mean-square practical reachability are first introduced. Instead of treating the noise as bounded disturbance, the stochastic control(More)