摘要
由于太空中存在各种宇宙射线辐射,导致星载设备产生可靠性问题,使得高性能数字信号处理器(DSP)在航空航天中的应用受到制约,因此需要采取容错措施来对其进行加固处理。但软加固算法会使程序复算而增加系统开销,文章基于C6748 DSP平台,详细说明了在不影响检错率的情况下的功耗优化方法。实验结果表明,通过此方法在保证检错率的条件下能显著降低系统开销,同时也提升了执行效率。
Because the various cosmic radiation in space leads the spaceborne equipment to produce some reliability problems, the application of high performance digital signal processor (DSP) is constrained in the aerospace. Therefore measures need to be taken for fault-tolerant processing. But the soft harden or reinforcement algorithm makes program to repeat calculation and increase the system energy cost. This paper, based on C6748 DSP platform, studies the power consumption optimization method in detail. The experimental results show that this method can signiifcantly reduce the system energy cost and enhance the execution efifciency under the conditions of ensuring error detection rate.
出处
《集成技术》
2013年第6期31-35,共5页
Journal of Integration Technology
基金
国家自然科学基金(61272146)
关键词
DSP
抗辐照
软加固
功耗优化
DSP
anti radiation
software fault tolerance
power optimization
