| 摘要: |
| 合成孔径雷达(SAR)实时处理技术的发展对相位梯度自聚焦(PGA)算法的工程实现提出了要求。基于以多片主流SHARC处理器为核心构成的硬件平台,针对PGA算法数据处理量大、计算复杂度高的特点,设计开发了并行处理的系统拓扑和程序流水结构及其软件程序。机载SAR实测数据的处理结果验证了该方案的有效性。 |
| 关键词: 合成孔径雷达,信号处理,自聚焦算法,相位梯度自聚焦,并行多处理器系统 |
| DOI：10.3969/j.issn.1001-893X. |
| 修订日期：2007-10-26 |
| 基金项目: |
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| Implementation of PGA Algorithm Based on SHARC Processors |
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| Abstract: |
| The real-time implementation of phase gradient autofocus(PGA)algorithm is required because of the rapid development of synthetic aperture radar(SAR) techniques.Based on the up-to-data DSP hardware system composed by multiple SHARC chips,according to the characteristics of large data size and heavy computation burden of PGA algorithm,the novel parallel structure,the pipelining scheme and the software programmes are developed and discussed in this paper.The test results of live airborne SAR data are given to show its validity. |
| Key words: synthetic aperture radar(SAR),signal processing,autofocus algorithm,phase gradient autofocus(PGA),parallel multiple processors system |
《电讯技术》编辑部 