A composite spread spectrum sequence for underwater acoustic signal acquisition

doi:10.1049/cmu2.12782

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	A composite spread spectrum sequence for underwater acoustic signal acquisition
	Zhang, Chenyu 1,2; Wu, Huabing 1,2,3
	2024-06-07
发表期刊	IET COMMUNICATIONS
ISSN	1751-8628
页码	12
摘要	Spread spectrum technology has been widely employed for positioning and communicating with autonomous underwater vehicles (AUVs), but conventional spread spectrum sequences lack confidentiality and reliability in UWA channel. Considering the limitations of conventional sequences and the characteristics of underwater acoustic (UWA) channel, a composite chaotic orthogonal sequence (CCOS) based on the UWA channel is proposed. The confidentiality of the CCOS is superior to that of the m-sequence, while the autocorrelation performance of the CCOS is superior to that of the orthogonal sequence. Moreover, the CCOS can compensate for the imbalance of logistic chaotic sequence when assigned certain initial values. Acquisition is a crucial component of accessing the spread spectrum signal; therefore, the acquisition performance indicates the applicability of the CCOS. The source-target model is established to simulate communication with an underwater moving target. To simulate the acquisition process, a parallel algorithm based on fast Fourier transform is adopted, and the entire simulation process is completed based on the BELLHOP ray acoustic model. Through data processing, the Doppler shift error is less than half of the frequency-search element. Furthermore, the acquisition probabilities of the CCOS with different numbers of bits are over 90%, which demonstrates the reliability of the CCOS. This article explores the acquisition performance of spectrum spread sequence based on underwater acoustic (UWA) channel. To overcome the limitations of conventional sequences, a composite chaotic orthogonal sequence (CCOS) is proposed as spectrum spread sequence and a source-target model is constructed for simulation. In addition, a parallel algorithm based on fast Fourier transform is adopted, which is more efficient than conventional linear algorithm. By varying signal to noise ratio and bits of sequence, the acquisition probabilities in different conditions are obtained, leading to a conclusion that CCOS can be acquired successfully with suitable conditions based on UWA channel. image
关键词	data acquisition spread spectrum communication underwater acoustic communication
资助者	Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS
DOI	10.1049/cmu2.12782
关键词[WOS]	COMMUNICATION-SYSTEM ; DESIGN
语种	英语
资助项目	Youth Innovation Promotion Association CAS
资助者	Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS
WOS研究方向	Engineering
WOS类目	Engineering, Electrical & Electronic
WOS记录号	WOS:001239898100001
出版者	INST ENGINEERING TECHNOLOGY-IET
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/14614
专题	时间用户系统研究室
通讯作者	Wu, Huabing
作者单位	1.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Key Lab Time Reference & Applicat, Xian, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Chenyu,Wu, Huabing. A composite spread spectrum sequence for underwater acoustic signal acquisition[J]. IET COMMUNICATIONS,2024:12.
APA	Zhang, Chenyu,&Wu, Huabing.(2024).A composite spread spectrum sequence for underwater acoustic signal acquisition.IET COMMUNICATIONS,12.
MLA	Zhang, Chenyu,et al."A composite spread spectrum sequence for underwater acoustic signal acquisition".IET COMMUNICATIONS (2024):12.