Passive Detection of Low-Altitude Signal Sources Using an Improved Cross- Correlation Algorithm

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dc.contributor.authorCao, Conghui
dc.contributor.authorYang, Hua
dc.contributor.authorZhang, Hao
dc.contributor.authorWang, Yan
dc.contributor.authorGulliver, Thomas Aaron
dc.date.accessioned2019-01-24T17:27:50Z
dc.date.available2019-01-24T17:27:50Z
dc.date.copyright2018en_US
dc.date.issued2018
dc.description.abstractThe passive detection of low-altitude signal sources is studied using an improved cross-correlation method in the time–frequency domain. A matching template is designed for signal cross-correlation, and a cross-correlation threshold is used to determine whether a signal source is present or not. An improved cross-correlation method is also proposed to estimate the direction of arrival and communication frequency of a signal source. Furthermore, the distance and signal-to-noise ratio are estimated using an energy detector. Outdoor data from a bridge in the Jimo District, Qingdao, and indoor data from a research laboratory are used for performance evaluation. The results obtained show that the proposed method can provide better passive detection of low-altitude signal sources compared to several well-known algorithms in the literature. In addition, this method is more suitable for long-distance detection.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThis work was supported by the National Natural Science Foundation of China (61871354, 6172780176, 61701462, 61727806, and 41527901), the Qingdao National Laboratory for Marine Science and Technology (2017ASKJ01), the Qingdao Science and Technology Plan (17-1-1-7-jch), the Nature Science Foundation of Shandong Province (ZR2017MD027), and the Fundamental Research Funds for the Central Universities (201713018).en_US
dc.identifier.citationCao, C., Yang, H., Zhang, H., Wang, Y. & Gulliver, T.A. (2018). Passive Detection of Low-Altitude Signal Sources Using an Improved Cross-Correlation Algorithm. Applied Sciences, 8(12), 2348. https://doi.org/10.3390/app8122348en_US
dc.identifier.urihttps://doi.org/10.3390/app8122348
dc.identifier.urihttp://hdl.handle.net/1828/10532
dc.language.isoenen_US
dc.publisherApplied Sciencesen_US
dc.subjectsignal detection
dc.subjectlow-altitude signal source
dc.subjectunmanned aerial vehicle (UAV)
dc.subjectcross-correlation
dc.subjecttime–frequency analysis
dc.subject.departmentDepartment of Electrical and Computer Engineering
dc.titlePassive Detection of Low-Altitude Signal Sources Using an Improved Cross- Correlation Algorithmen_US
dc.typeArticleen_US

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