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中文摘要：
提出了一种新的最佳循环相关信号，即几乎最佳屏蔽序列偶。研究了它的Fourier频谱特性，利用这些频谱特性推导出了几乎最佳屏蔽序列偶的存在空间 、屏蔽位数、平衡度及汉明距离之间的关系。运用这些特性和关系可以提高计算机搜索几乎最佳屏蔽序列偶的效率，在此基础上编写了计算机搜索算法，搜索出若干长度的几乎最佳屏蔽序列偶。对几乎最佳屏蔽序列偶作为同步码在同步检测中的应用进行了研究，并与Barker码进行了性能比较分析。
英文摘要：
A new periodic correlation signal called the almost perfect punctured sequence pairs （APPSP）is presented. The Fourier spectrum characters of APPSP are studied. The relations among the existent range, punctured numbers and the hamming distance can be deduced from the spectrum characters. By using the spectrum characters and relations, the efficiency of searching the APPSP can be improved. An efficient computational algorithm is implemented to find out a set of APPSP. The performances of APPSP as synchronization code in detecting synchronization are compared with that of the barker code.
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