Impact of the Doppler modulation on the range and Doppler processing in OFDM radar

Gabriel Lellouch, Amit Mishra, Michael Inggs

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

Crynodeb

Orthogonal frequency division multiplexing (OFDM) radar is highly appropriate in applications where communication and radar functionalities are intended simultaneously. The same waveform and the same infrastructure are used, reducing hardware complexity. In this paper, we focus on the radar processing of a pulsed waveform, where the pulses are composed of several OFDM symbols. We derive a novel signal processing scheme that retrieves an estimate of the range and the radial velocity when the target is a point scatterer. Rather than a processing based on correlation functions we exploit the phases of the subcarriers and our knowledge of the phase codes. Then, we discuss the impact of the Doppler modulation within the individual pulses and we show how the use of identical sequences (IS) for the phase codes can mitigate the degradation of the retrieval in the range Doppler image. Lastly, we propose two alternative methods that retrieve an unambiguous estimate of the Doppler frequency.

Iaith wreiddiolSaesneg
Teitl2014 IEEE Radar Conference
Is-deitlFrom Sensing to Information, RadarCon 2014
CyhoeddwrIEEE Press
Tudalennau803-808
Nifer y tudalennau6
ISBN (Argraffiad)978-1-4799-2035-8
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 19 Mai 2014
Cyhoeddwyd yn allanolIe
Digwyddiad2014 IEEE Radar Conference, RadarCon 2014 - Cincinnati, OH, Unol Daleithiau America
Hyd: 19 Mai 201423 Mai 2014

Cyfres gyhoeddiadau

EnwIEEE National Radar Conference - Proceedings
ISSN (Argraffiad)1097-5659

Cynhadledd

Cynhadledd2014 IEEE Radar Conference, RadarCon 2014
Gwlad/TiriogaethUnol Daleithiau America
DinasCincinnati, OH
Cyfnod19 Mai 201423 Mai 2014

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