基于混沌的水声定位信号设计及性能分析  

Design and performance analysis of underwater acoustic positioning signal based on chaos

作　　者：庞永丽 郭亚静[1] 王黎明[1] 

机构地区：[1]中北大学信息探测与处理山西省重点实验室,山西太原030051

出　　处：《中国测试》2017年第10期134-138,共5页China Measurement & Test

基　　金：国家自然科学基金(61471325);山西省自然科学基金(2015021099)

摘　　要：针对水声信道中复杂的噪声环境及各种干扰对定位准确度的影响,利用扩频通信技术的抗干扰、抗噪声能力,提出一种基于混沌的扩频信号产生方法。将该信息作为水声定位信号,通过相关法得到精确时延,进而可以计算出节点间的距离,通过在水声信道下对其性能进行分析。仿真结果表明:该扩频信号相关特性理想,具有很强的抗干扰能力,测距准确度高,适合用作水声定位信号。In view of the influence of complex noise and various interference in the underwater acoustic channel on the positioning accuracy, a method of generating chaotic spread spectrum signal is proposed by using the anti-interference and anti-noise ability of spread spectrum communication technology. And the signal is regarded as acoustic location signal. The time delay can be obtained by calculating the correlation function between the transmitted signal and the received signal, and then the distance between nodes can be calculated. The result of the simulation made in underwater acoustic channel shows that the correlation and anti-jamming ability is excellent, and high positioning accuracy can be achieved,so it is suitable to be used as underwater acoustic positioning signal.

关 键 词：水声定位 水声信道 扩频通信 混沌 

分 类 号：TN957.51[电子电信—信号与信息处理]