<p style='text-indent:20px;'>Frequency hopping sequences with low hit zone is significant for application in quasi synchronous multiple-access systems. In this paper, we obtained two constructions of optimal frequency hopping sequence sets with low hit zone based on interleaving techniques. The presented low hit zone frequency hopping sequence sets are with new and flexible parameters and large family size which can meet the needs of the practical applications. Moreover, all the sequences in the proposed sets are cyclically inequivalent. Some low hit zone frequency hopping sequence sets constructed in literatures are included in our family. The proposed frequency hopping sequence sets with low hit zone are contributed for quasi-synchronous frequency hopping multiple access system to reduce or eliminate multiple-access interference.</p>

中文翻译：

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大家族规模的最优低命中区跳频序列集的构建

<p style='text-indent:20px;'>低命中区的跳频序列对于准同步多址系统的应用具有重要意义。在本文中，我们基于交织技术获得了两种具有低命中区的最优跳频序列集的构造。所提出的低命中区跳频序列集参数新颖灵活，家族规模大，可以满足实际应用的需要。此外，所提出的集合中的所有序列都是循环不等价的。文献中构建的一些低命中区跳频序列集包含在我们的家族中。所提出的具有低命中区的跳频序列集有助于准同步跳频多址系统减少或消除多址干扰。