采用二维离散混沌模型，研究了从混沌序列到加密因子序列的映射方法。
Mapping method about chaotic sequence is researched to encryption factor sequence using two-dimensional discrete chaotic model.
计算机仿真结果表明，该模型产生的混沌扩频序列调整更容易，比基于单一混沌映射能产生更多符合扩频通信要求的扩频序列。
Experimental results show that this scheme can generate much more spread-spectrum sequences than single chaotic map to satisfy the demand of spread-spectrum communication.
提出一种基于四维混沌映射产生混沌二值序列的改进算法。
An improved chaotic binary sequences algorithm based on one four-dimension chaotic map is proposed.
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