The general requirement of communication system and the application potential in secure communication are expatiated . the chaotic secure communication methods home and abroad are also summarized , including chaos spread spectrum communication , chaos key - shifting , chaos parameter modulation , chaos masking , chaos cdma . the exiting problems and development direction are also pointed out respectively 介绍了混沌学的发展过程和意义,阐述了通信系统的一般要求和混沌在保密通信中的应用潜力,综述了国内外现有的混沌保密通信方法,其中包括:混沌扩频通信,混沌键控,混沌参数调制,混沌掩盖,混沌数字码分多址等五大类,指出了各自存在的问题和发展方向。
数字: figure; digit; numeral; char ...码: a sign or object indicating ...z计数字码: z count word数字码流: digital code stream双相数字码: biphase digital code有限数字码: final digit code有效数字码: significant digit code字母数字码: alphameric code; alphanumeric code最后数字码: final digit code字码数字显示: alpha-numeric readout数字码间间隔定时: interdigital timing数字码形发生器: digital pattern generator字码: character code自动数字码识别器自动数字识别: automatic number identification自动数字识别自动数字码识别器自动数字识别: automatic number identification编字码: lettering钢字码: letter punch简字码: code mnemonic铅字码: lead word number主字码: descriptor字码儿: [口语]1.(数字) numeral2.(数目) number; amount字码管: character-display tube; charactron字码轮: number ring字码锁: combination lock字码子: codon