跳频码序列动态特性和抗预测设计要求

抗干扰跳频通信使用的跳频码序列应具有较长的周期,因此实际使用中跳频码序列更为重要的是局部和动态的平衡和汉明相关特性.为了对抗预测,跳频码序列应提出两个新的设计要求,对TOD敏感和对地址码敏感.传统的跳频码序列是否具有可接受的局部和动态的平衡和汉明相关特性需要仔细检查.将地址码以简单异或输出的传统方法是不能被抗预测要求所接受的.地址码必须如分组密码方法那样,混淆在对TOD输入的变换过程之中.基于上述认识,该文提出将局部、动态的平衡和汉明相关特性以及序列抗预测要求作为常规衡量抗干扰跳频通信跳频码技术性能的应用指标.

Dynamic Property and Anti-forecast Requirements of Hopping Sequences

Hopping sequences used in anti-jamming hopping communication ought to have a longer period, therefore the partial and dynamic properties of balance and Hamming correlation are more essential in practical hopping sequences application. For the sake of anti-forecast two new design desires of sensitivity of hopping sequences to time of date(TOD) and address code are put forward. To check carefully partial and dynamic properties of balance and Hamming correlation is necessary for traditionary hopping sequences. The traditionary method of simple exclusive OR output sequences by address code is not available for requirement of anti-forecast. It is necessary to mix address code in transform process of input TOD as block cryptogram. To base on aforementioned understand we propose that partial and dynamic property of balance and Hamming correlation and two requirements of anti-forecast ought to be important targets of technical performance in hopping sequences application.