【作者】 鲁欣；

【导师】 赵亦工；

【作者基本信息】 西安电子科技大学 ， 模式识别与智能系统， 2002， 硕士

【摘要】 近年来，CPLD／FPGA技术迅速发展，已经成为数字信号处理的重要技术之一。本文讨论的就是应用CPLD／FPGA来实现两个专用信息处理模块的设计。它们分别是图象压缩系统的图象反变换模块—S+P逆变换模块及数字脉冲压缩系统的核心模块—4096点FFT变换模块。在第一部分中，首先介绍了S+P逆变换的原理，该变换实现简单而且变换性能较好，这是某图象压缩系统中所采用的图象编码方法的基础。然后说明了基于CPLD的S+P逆变换硬件实现方案。在第二部分中，首先说明了数字脉压技术是现代雷达中重要的信号处理技术之一，而4096点FFT变换模块就是硬件实现脉压技术的核心部分，然后说明了基4FFT的基本知识以及基于FPGA的详细的硬件实现方案。更多还原

【Abstract】 In recent years, the rapidly developing technology of CPLD/FPGA has been one of important technology of digital signal processing. In this paper what is mainly discussed is the hardware implementation of the two application specific information processing modules by CPLD or FPGA, which are S+P inverse transformation, the inverse transform module of an image compressing system, and 4096-point complex FFT/IFFT module, the central module of the digital pulse compressing system. In the former, firstly the related knowledge of S+P inverse transform is presented. Easy in implementation, good in storage space, such transform is the base of an image coding algorithm image compressing system. Secondly, the hardware implementation based on CPLD of the S+P inverse transformation is shown. In the latter, firstly the fact that digital pulse compressing technology is one of the most important ways of signal processing in modern radar is introduced. The module of 4096-point complex FFT/IFFT play a very important role in hardware implementation of digital pulse compressing system. Secondly the basic theory of Radix-4 FFT and the hardware implementation based on FPGA of the 4096-point complex FFT/IFFT is illustrated in detail.更多还原