Show simple item record

dc.contributor.advisorPace, Phillip E.
dc.contributor.advisorLoomis, Herschel H.
dc.contributor.authorLima, Antonio F.
dc.dateSeptember 2002
dc.date.accessioned2012-03-14T17:43:40Z
dc.date.available2012-03-14T17:43:40Z
dc.date.issued2015-09
dc.identifier.urihttp://hdl.handle.net/10945/4944
dc.description.abstractLPI radar is a class of radar systems possessing certain performance characteristics that make them nearly undetectable by today's digital intercept receivers. This presents a significant tactical problem in the battle space. To detect these types of radar, new digital receivers that use sophisticated signal processing techniques are required. This thesis investigates the use of cyclostationary processing to extract the modulation parameters from a variety of continuous-wave (CW) low-probability-of-intercept (LPI) radar waveforms. The cyclostationary detection techniques described exploit the fact that digital signals vary in time with single or multiple periodicity, owing to their spectral correlation, namely non-zero correlation between certain frequency components, at certain frequency shifts. The use of cyclostationary signal processing in a non-cooperative intercept receiver can help identify the particular emitter and aid in the development of electronic attack signals. LPI CW waveforms examined include Frank codes, P1 through P4, Frequency Modulated CW (FMCW), Costas frequencies as well as several frequency-shift-keying/phase-shift-keying (FSK/PSK) waveforms. This thesis show that for signal-to-noise ratios of 0 dB and -6 dB, the cyclostationary signal processing can extract the modulation parameters necessary in order to distinguish between the various types of LPI modulations.en_US
dc.description.urihttp://archive.org/details/analysisoflowpro109454944
dc.format.extentxxii, 162 p. : col. ill.en_US
dc.publisherMonterey California. Naval Postgraduate Schoolen_US
dc.rightsCopyright is reserved by the copyright owneren_US
dc.subject.lcshRadaren_US
dc.subject.lcshSignal processingen_US
dc.titleAnalysis of low probability of intercept (LPI) radar signals using cyclostationary processingen_US
dc.typeThesisen_US
dc.contributor.departmentInformation Sciences (IS)
dc.subject.authorLow probability of intercept (LPI) radarsen_US
dc.subject.authorElectronic support measures (ESM)en_US
dc.subject.authorFFT accumulation method (FAM)en_US
dc.subject.authorDirect frequency smoothing method (DFSM)en_US
dc.subject.authorBinary phase shift keying (BPSK)en_US
dc.subject.authorFrequency modulated continuous wave (FMCW)en_US
dc.subject.authorPolyphase codes (P4, P3, P2, P1 and Frank codes)en_US
dc.subject.authorCombined FSK/PSK (frequency shift keying and phase shift keying)en_US
dc.description.serviceCaptain, Brazilian Air Forceen_US
etd.thesisdegree.nameM.S. in Systems Engineeringen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineSystems Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.verifiednoen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record