Research on an Alpha Navigation Signal Detection Method Based on Multichannel Orthogonal Correlation

doi:10.3390/app14093620

NTSC-IR > 授时方法与技术研究室

	Research on an Alpha Navigation Signal Detection Method Based on Multichannel Orthogonal Correlation
	Yan, Wenhe 1,2,3; Li, Shifeng1,2 ; Ma, Xinze 1; Song, Yuhang 4; Yuan, Jiangbin 1,2; Hua, Yu1,2
	2024-05-01
发表期刊	APPLIED SCIENCES-BASEL
卷号	14 期号:9 页码:16
摘要	The Alpha navigation system is the only operating radio system based on very-low-frequency (VLF) signals that can be used to research VLF navigation, timing, and ionospheric characteristics. The detection of the Alpha navigation signal is the key step in the Alpha receiver; however, the received Alpha navigation signal is susceptible to noise and mutual interference, which deteriorates signal detection performance. This paper presents a multichannel orthogonal correlation method for Alpha navigation signal detection. Once the three frequency signals of the Alpha navigation system are obtained using a notch filter, station identification is realized using a multichannel orthogonal correlation method and signal format. The selection of key parameters and the detection performance under noise and mutual interference are analyzed. This method's detection probability exceeds 90% when the signal-to-noise ratio (SNR) is greater than -10 dB. The influence of mutual interference on the signal correlation peak is less than 1% when the signal-to-interference ratio (SIR) of the mutual interference is greater than -28 dB. The proposed method is verified using an actual signal collected using an Alpha receiver. The results show that an Alpha signal can be detected at an extremely low SNR. This method has strong practicability and satisfies the application requirements of an Alpha receiver.
关键词	VLF radio signals alpha navigation system correlation detection station identification
资助者	Chinese Academy of Sciences (CAS) "Light of West China" Program ; Chinese Academy of Sciences (CAS) "Light of West China" Program ; Chinese Academy of Sciences (CAS) "Light of West China" Program ; Chinese Academy of Sciences (CAS) "Light of West China" Program ; Chinese Academy of Sciences (CAS) "Light of West China" Program ; Chinese Academy of Sciences (CAS) "Light of West China" Program ; Chinese Academy of Sciences (CAS) "Light of West China" Program ; Chinese Academy of Sciences (CAS) "Light of West China" Program
DOI	10.3390/app14093620
语种	英语
资助项目	Chinese Academy of Sciences (CAS) "Light of West China" Program
资助者	Chinese Academy of Sciences (CAS) "Light of West China" Program ; Chinese Academy of Sciences (CAS) "Light of West China" Program ; Chinese Academy of Sciences (CAS) "Light of West China" Program ; Chinese Academy of Sciences (CAS) "Light of West China" Program ; Chinese Academy of Sciences (CAS) "Light of West China" Program ; Chinese Academy of Sciences (CAS) "Light of West China" Program ; Chinese Academy of Sciences (CAS) "Light of West China" Program ; Chinese Academy of Sciences (CAS) "Light of West China" Program
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:001219860700001
出版者	MDPI
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/14624
专题	授时方法与技术研究室
通讯作者	Li, Shifeng
作者单位	1.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China 2.Chinese Acad Sci, Key Lab Time Reference & Applicat, Xian 710600, Peoples R China 3.China State Shipbuilding Corp, Lab Sci & Technol Marine Nav & Control, Tianjin 300131, Peoples R China 4.Tianjin Nav Instrument Res Inst, Tianjin 300131, Peoples R China
推荐引用方式 GB/T 7714	Yan, Wenhe,Li, Shifeng,Ma, Xinze,et al. Research on an Alpha Navigation Signal Detection Method Based on Multichannel Orthogonal Correlation[J]. APPLIED SCIENCES-BASEL,2024,14(9):16.
APA	Yan, Wenhe,Li, Shifeng,Ma, Xinze,Song, Yuhang,Yuan, Jiangbin,&Hua, Yu.(2024).Research on an Alpha Navigation Signal Detection Method Based on Multichannel Orthogonal Correlation.APPLIED SCIENCES-BASEL,14(9),16.
MLA	Yan, Wenhe,et al."Research on an Alpha Navigation Signal Detection Method Based on Multichannel Orthogonal Correlation".APPLIED SCIENCES-BASEL 14.9(2024):16.