【作者】 何学辉；

【导师】 苏涛；

【作者基本信息】 西安电子科技大学 ， 信号与信息处理， 2004， 硕士

【摘要】 合成孔径雷达成像具有全天候、全天时和远距离的特点，因此合成孔径雷达成像实时信号处理的研究对军用和民用均具有重要的实用价值。合成孔径雷达的成像算法中，多普勒参数的估计精度直接影响到成像质量的好坏。本文首先讨论了基于原始数据的多普勒参数的估计方法，并且分析了距离多普勒算法在实时处理中的实现，以及实时成像下的运动补偿、数据分段及几何校正；然后在此算法的基础上提出了相应的系统解决方案，系统设计采用 VME 总线结构，其运算核心部分是一个由四片数字信号处理器组成的共享总线式并行处理模块，论文并提供了整个实时成像算法的软件实现。论文最后介绍了实时操作系统在合成孔径雷达成像中的运用。本文对研究合成孔径雷达成像实时信号处理具有一定的现实意义。更多还原

【Abstract】 Synthetic aperture radar (SAR) has the characteristic of all-weather, day/night andlong range, so it is of great value to study on real-time processing for SAR imaging inboth civilian and military applications. In the algorithm for SAR, the estimationprecision of Doppler parameter affects the quality of image directly. At first, the paperdiscusses the method of Doppler parameter estimation based on raw datum, andanalyzes the realization for Range-Doppler algorithm in real-time processing, motioncompensation, datum subsection and geometry emendation. Then, the correspondingsystem solution based on the algorithm is put forward. The Versa Module Eurocard busconstruction is adopted in the system design. Operation core is a shared-bus,parallel-processing module, which is composed of four digital signal processors. Thewhole real-time imaging algorithm realization in software is also given. At last, thepaper expounds the application of Real Time Operation System (RTOS) on SARimaging. So the paper is of realistic meaning in a sense for studying SAR imagingreal-time signal processing.更多还原