摘要
本文提出了采用数字信号处理（ Ｄ Ｓ Ｐ） 芯片 Ｔ Ｍ Ｓ３２０ Ｃ６２ｘ 实现线性调频（ Ｃｈｉｒｐ） 信号频域数字脉冲压缩（ Ｄ Ｐ Ｃ） 的方案．针对 Ｔ Ｍ Ｓ３２０ Ｃ６２ｘ 运算字长较短的问题，研究了有限字长效应的影响；对原码截断算法的字长误差进行了理论分析；并对原码、补码格式下定点截断和定点舍入算法的有限字长效应进行了仿真分析；讨论了输入噪声对字长误差的影响；并给出了一种解决有限字长效应的方案．
This paper advances a scheme using the TMS320C62x to realize a digital pulse compression system which waveform is linear FM signal.The finite register effects in the system are discussed.The word length errors using truncation of sign magnitude code are analyzed.And the computer simulations which uses truncation and ronding of sign magnitude code and complementary code are given.The improvement of finite register length effects by noise is discussed.The paper also raises an effective method to solve the word length error′s problem.
出处
《电子学报》
EI
CAS
CSCD
北大核心
1999年第9期135-137,143,共4页
Acta Electronica Sinica
