数字时间相关积累（Ⅱ）——互相关积累

基金项目:

国家自然科学基金资助项目。

A digital time correlative accumulation (II)——cross-correlative accumulation

摘要: 本文对数字时间互相关积累,及与之相适配的信号调制方式的原理和结构作简要讨论,估算了其虚警概率、检测概率和输入信噪比。理论分析和现场实验证明了互相关积累,如同自相关积累一样,能适应于时-空变、多途和噪声控制的浅水声信道,具有低速率意义下的普适性。

Abstract: The digital time cross-correlative accumulation scheme is described in this paper. The principle and the basic structure of the scheme are introduced first, the detection probability, false-alarm probability and input (S/N) are then analysed for some typical sonar systems. Superior performances have been proved to be true through theoretical estimations and experiments in sidte, another signal processing scheme of common sense for the complicated shallow-water acoustic channel is offered.