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Aiming to the dynamic electromagnetic characteristic of the space target, a high-effective and real-time simulation method is proposed to suffice the demand of the engineering project. Firstly, use the coordinate transform means to calculate the pitch and aspect angle of Line of Sight(LOS) in the radar reference frame; And, calculate the rotate angle(More)
The performance of task scheduling is one of the key factor that affects embedded real-time operating system's performance. This paper describes the realization mechanism of priority-based preemptive scheduling of MQX and the simple and efficient scheduling process of MQX based on in-depth analysis on task scheduling source code starting from MQX task(More)
The black-spotted frog (Pelophylax nigromaculata) and Asiatic toad (Bufo gargarizans), two relatively distantly related species, live in different habitats with different adaptive dark patches. To explain the formation of dark patches, the distribution patterns of melanin granules were examined with light microscopy and transmission electron microscopy.(More)
The aim of this article is to study a technique of simulating the Radar echo for high-speed dynamic target. Firstly, swept wideband echo model under static measurement and LFM echo model under dynamic measurement were established based on diverse signals transmitted in static measurement and dynamic measurement. The method for simulating the LFM echo of(More)
For a quantitative analysis of correlations between China's telecommunication industry and economic and social development, this paper takes the United States as the standard reference models employs econometric tools such as Feder Model etc, select authentic statistics respectively issued by National Bureaus of China and the USA 2009 for a simulation data(More)
Research on the stability of eco-industrial chain (EIC) is attracting more and more attention. Essentially, the instability of EIC is one process of some enterprise shows instability and then it transmits instability to others enterprises through some transmission route. Based on the information entropy theory, the interrelation entropy concept is presented(More)
As the internet is developing rapidly, more and more customers obtain the product and brand information by internet communication. Through the questionnaire survey, the paper used statistical analysis methods such as the pairs T-test and variance analysis to discuss customers' trust in internet communication. The result showed that customers trusted(More)
  • Xu Jin, Zhao Tao
  • 2010
Abroad, the natural water cycle and water resources evaluation research the law has been a long time to arrive at a relatively rich source of research results, but in assessing water use efficiency and effectiveness, more focused on certain aspects of the evaluation index of research, This article will evaluate the value of the water cycle proceeding(More)