水下通信中信号跟踪方法的抗干扰设计Anti-jamming design of signal tracking method in underwater communication
陈林
摘要(Abstract)：
针对传统的水下通信信号跟踪方法根据点观测信息对当前信号状态实施预测,对数据信噪比较为敏感,存在较高的误码率和较低的抗噪性能,设计一种抗干扰性强的水下通信信号跟踪方法。通过分块的信道跟踪方法对实际信道进行实时跟踪,减缓时变对信道的冲击,在跟踪的信道中采用弱小目标信号的检测前跟踪方法,将原始数据作为观测数据,利用跟踪算法预计目标状态,再对目标状态进行检测判决,有利于低信号噪音在高信噪比条件下的能量积累,提高目标检测性能,实现高噪声水下环境中通信信号的准确跟踪。实验结果说明,所提方法能够准确跟踪水下通信信号,具有较低的误码率,抗噪性能高。
关键词(KeyWords)： 水下通信;信号跟踪;抗干扰;弱目标;信道跟踪;抗噪性能
基金项目(Foundation): 宿迁市科技支撑计划项目:基于机器鱼的水下污染源定位研究(S201510)~~
作者(Author): 陈林
DOI: 10.16652/j.issn.1004-373x.2018.07.004
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