增量调制原理，实现序列符号化，增加对前后大小关系的判断，可有效地实现序列的符号化，然后利用Shannon熵实现熵分析。(The principle of delta modulation, which realizes sequence symbolization and increases the relation between the size of the front and back, can effectively realize the symbolization of sequences, and then uses Shannon entropy to realize entropy analysis.)