The Simulation Research and NIST Test of Binary Quantification Methods for the Typical Chaos

In this paper, we study into the binary quantification methods of Logistic, Tent and Lorenz three typical chaos, and apply direction quantization, threshold quantization and interval quantization to quantify typical chaos signal respectively. On the basic of studying the standards of NIST test and the test suite of STS, we do a lot of NIST tests and analysis on the three typical chaos sequence to find the best quantification method for the three typical chaos, and study the impact of the system parameters, the initial value and the length of sequence on the digital chaotic sequence, and achieve better chaotic sequence in randomness, which provide some theoretical guidance to the digital secure communication.