中文摘要：

提出一种改进传统Hénon映射的方法.该方法通过引入绝对值项改变映射系统的内部结构,大大提高了映射系统的线性复杂度和初值敏感性.利用混沌系统生成伪随机序列,进一步对比分析了映射系统生成的伪随机序列的性能.理论分析和实验仿真表明,改进后的映射系统比原系统生成的序列质量有很大提高,验证了该方法的有效性.

英文摘要：

A method of improving the traditional Hénon map is proposed in the paper. The internal structure of the system is changed by adopting absolute value term. The linear complexity and sensitivity to initial conditions of the proposed system have been greatly enhanced. The performance of pseudorandom-bit sequences which are generated by the proposed system is analyzed in comparison with the ones that are generated by chaotic system. The performance of the sequence generated by the proposed system is improved compared with the original system. Theoretical analysis and the simulation results show the feasibility of the method.