Investigation of hopped frequency waveforms for range and velocity measurements of radar targets

Umur Kathree, Willie Nel, Vanessa Janse Van Rensburg, Amit Kumar Mishra

Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddTrafodion Cynhadledd (Nid-Cyfnodolyn fathau)


In the field of radar, High Range Resolution (HRR) profiles are often used to improve target tracking accuracy in range and to allow the radar system to produce an image of an object using techniques such as inverse synthetic aperture radar (ISAR) processing. These profiles are typically formed from wideband linearly stepped frequency waveforms which are synthesised by combining the spectra of the transmitted pulses in the burst [1]. This work focuses on the use of HRR profiles generated from hopped frequency waveforms. This adds the advantage of range-Doppler decoupling and robustness against electronic countermeasures (ECM) [2], [3]. However hopped frequency waveforms suffer from high levels of sidelobes [4]. Improving the spurious free dynamic range (SFDR) of target measurements is required for various applications such as target recognition. This was done with the CLEAN technique [5] which could reduce the sidelobes to under 40 dB below the maximum amplitude of the profiles. To show how this work can be applied to areas such as ISAR, simulated rotating targets were used. In terms of range and velocity measurement accuracy, the CLEAN method performed adequately for signal to noise ratios (SNR) above -10 dB. This work can be extended to incorporate acceleration, extended targets and measured data.

Iaith wreiddiolSaesneg
Teitl2015 IEEE Radar Conference - Proceedings
CyhoeddwrIEEE Press
Nifer y tudalennau6
ISBN (Electronig)9781467396554
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 27 Hyd 2015
Cyhoeddwyd yn allanolIe
DigwyddiadIEEE Radar Conference - Johannesburg, De Affrica
Hyd: 27 Hyd 201530 Hyd 2015

Cyfres gyhoeddiadau

Enw2015 IEEE Radar Conference - Proceedings


CynhadleddIEEE Radar Conference
Gwlad/TiriogaethDe Affrica
Cyfnod27 Hyd 201530 Hyd 2015

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