重点描述了仿真原理及仿真模型组成，介绍了雷达信号特性仿真、雷达伺服系统仿真、雷达信号处理系统仿真等关键环节的数学仿真模型。

The simulation principles and the mathematical model is described, and then, the key models of simulations such as signal characteristics, servo systems and signal process system are followed.

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事件相关技术是网络管理系统中的一项关键技术，本文通过对代码簿相关模型技术的分析与研究，阐述了事件相关技术的原理及应用。

The principle and application of Event correlation Techniques are discussed in this paper by the analysis and study of the codebook correlation model.

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根据MPEG - 4 AAC编码标准及对算法的基本原理的分析研究，算法优化的关键点在于心理声学模型、滤波器组和量化等模块。

We research on MPEG-4 AAC encoding standards and the algorithm principium. The key point is optimizing the psychoacoustic model module, filter Banks module and quantizer module.

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