Characterisation of sidelobes for multibeam radar based on quasi-orthogonal LFM waveforms

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dc.contributor.authorBalleri, Alessio
dc.contributor.authorKocjancic, Leon
dc.contributor.authorMerlet, Thomas
dc.date.accessioned2020-12-10T14:11:47Z
dc.date.available2020-12-10T14:11:47Z
dc.date.issued2020-06-11
dc.description.abstractMultibeam radars (MBRs) enable multiple independent channels by simultaneously exploiting spatial and waveform diversity. Orthogonal waveforms are employed to form multiple independent antenna beams, each one providing a different function and using different dedicated radar resources. This paper investigates sidelobe levels in MBRs and presents a comparison with those of an Electronic Steerable Array (ESA) that employs a single waveform in transmission to generate multiple simultaneous beams. Simulations are carried out for a 3-channel MBR transmitting quasi-orthogonal Linear Frequency Modulated (LFM) waveforms at Ku band. The response of the MBR to an ideal point target as a function of aspect angle as well as that to multiple targets in different locations has been investigated. Results corroborate the analytical findings and show that the sidelobe levels with respect to angle, at the target range, are attenuated by the cross-ambiguity function properties between the waveforms employed. The range response to a target in low channel isolation suffers from cross-channel interference that may alter the noise floor characteristics of the radar, hence stressing the importance of suitable waveform selection.en_UK
dc.identifier.citationBalleri A, Kocjancic L, Merlet T. (2020) Characterisation of sidelobes for multibeam radar based on quasi-orthogonal LFM waveforms. In: IEEE International Conference on Radar, Washington, DC, 28-30 April 2020en_UK
dc.identifier.isbn9781728168135
dc.identifier.issn1097-5764
dc.identifier.urihttps://doi.org/10.1109/RADAR42522.2020.9114709
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/16074
dc.language.isoenen_UK
dc.publisherIEEEen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectantenna arraysen_UK
dc.subjectantenna radiation patternsen_UK
dc.subjectarray signal processingen_UK
dc.subjectbeam steeringen_UK
dc.subjectFM radaren_UK
dc.subjectradar antennasen_UK
dc.subjectradar signal processingen_UK
dc.titleCharacterisation of sidelobes for multibeam radar based on quasi-orthogonal LFM waveformsen_UK
dc.typeConference paperen_UK

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