实时SAR成像系统中矩阵转置的设计和实现

Design and Implementation of Matrix Transposition Unit for Real-Time SAR Image Systems

矩阵转置是多维图像和信号处理中常用的处理过程 ,在SAR成像系统中也有非常重要的应用 重点讨论了数据流处理中行进列出的一类转置问题 ,结合SAR成像算法 ,分析成像系统中矩阵转置的特点 ,提出了输入输出平衡的数据流转置方式 ,解决由于硬件实现中存储器读写速度不同和输入输出数据量不同所带来的输入输出负载不平衡问题 还介绍了SAR成像系统中转置存储部件的实现问题 转置存储部件采用双总线的结构 ,图像数据的输入和输出可以并行进行 ,具有非常高的数据传输速度 ,在 6 6MHz的工作频率下 ,能达到

Matrix transposition is a fundamental operation in multidimensional image and signal processing, especially in SAR image systems With emphasis on the row-in and column-out matrix transposition problem in data flow prcessing and based on the SAR image algorithm, the matrix trasposition problem is invesigated in detail, and a balance matrix transposition method for data input and output is proposed This method can solve the imbalancing load problem due to unequal memory access speed and unequal data amount of input and output A high-speed matrix transposition module is introduced, which uses 2 data bus:input bus and output bus Data input and output can be processed parallelly The results indicate that it has the peak performance of 340MB/s in 66?MHz clock