中文摘要：

在n为奇数的情形下,研究了Dillon-Dobbertin（DD）采样序列和Welch-Gong（WG）序列间的互相关函数以及Hyperoval序列间的互相关函数.研究结果表明,DD采样序列和WG序列间的互相关函数以及Hyperoval序列间的互相关函数都可转化为m-序列与其采样序列间的互相关函数,同时得到当采样间隔为2^k＋1时,DD采样序列和WG序列间的互相关函数是3值的.

英文摘要：

For odd n,the cross-correlation function between a decimated Dillon-Dobbertin（DD）sequence and Welch-Gong（WG）sequence is investigated,and the cross-correlation function between a pair of Hyperoval sequences is studied.It is shown that the calculation of the cross-correlation functions between a decimated DD sequence and WG sequence,and a pair of Hyperoval sequences could be reduced to the calculation of the cross-correlation between m-sequences and their decimations.The cross-crrelation function between a decimated DD sequence and WG sequence could be 3-valued under a 2k＋1-decimation.