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Helicopter trim models are nonlinear equations with lots of variables in fact, and the state of each variable is quite hard to determine. Itpsilas quite difficult to solve such nonlinear equations in numerical compute field so far. Combining the traditional numerical algorithmspsila (such as quasi-Newton Method) quick convergent ability, and the genetic(More)
In this paper, an improved fast SPIHT algorithm has been presented. SPIHT and NLS (Not List SPIHT) are efficient compression algorithms, but the algorithms application is limited by the shortcomings of the poor error resistance and slow compression speed in the aviation areas. In this paper, the error resilience and the compression speed are improved. The(More)
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