摘要
随着SAR成像向高分辨率、大测绘带发展,ωK算法应用越来越广。Stolt插值作为ωK算法核心,运算量大同时对计算精度要求高,传统的DSP已很难满足实时处理要求,多核多DSP并行处理是一个重要发展趋势。介绍了一种基于TMS320C6678通用信号处理平台,该处理器内置8核,定点、浮点处理能力强,并以此平台论述了Stolt插值多核多DSP并行实现。程序同时采用了DMA CHAIN技术来实现数据存取,降低了数据存取时间,有效地提高了系统实时性。
With the development of SAR imaging towards high resolution and wide swath, ωK algorithm is applied more and more widely. Stolt interpolation is the core of ωK algorithm, which requires the large amount of computations and high calculation precision. The traditional DSP is difficult to meet the demand. Multi-core and multi-DSP parallel processing is an important development trend. This paper introduces a kind of 4 pieces of TMS320C6678 general signal processing platform, which has built-in 8 cores, strong fixedpoint and floating-point processing ability. As a case study of stolt interpolation, the multi-core and multiDSP parallel implementation is discussed. Using the DMA CHAIN technology to implement the data access reduces the data access time effectively and improves the real-time performance of the system.
出处
《雷达科学与技术》
北大核心
2016年第1期65-68,75,共5页
Radar Science and Technology
