An Iteration-Time Combination Method to Reduce the Dynamic Degradation of Digital Chaotic Maps

Table 1

Period analysis of two maps (U denotes undetected).

Precision	Original digital logistic map	Iteration-time combined digital logistic map
2^–8	12	355
2^–10	13	312689
2^–12	8	U
2^–14	74	U
2^–16	58	U
2^–18	201	U
2^–20	898	U
2^–22	1397	U
2^–24	3111	U
2^–26	734	U
2^–28	10739	U
2^–30	6042	U
2^–32	2996	U