Stepped OFDM radar technique to resolve range and doppler simultaneously

Gabriel Lellouch; Amit Kumar Mishra; Michael Inggs

doi:10.1109/TAES.2014.130753

Stepped OFDM radar technique to resolve range and doppler simultaneously

Gabriel Lellouch, Amit Kumar Mishra, Michael Inggs

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

Abstract

Recent developments involving the orthogonal frequency division multiplexing (OFDM) structure call for new potentials in radar. In this paper, a novel wideband OFDM based waveform is presented and the high range resolution (HRR) processing is derived.We show by means of comparisons with standard wideband waveforms the benefits of this concept. Radial velocities can be retrieved unambiguously and high velocities can be handled at no extra computational effort since the range migration constraint is related to the small pulse bandwidth as opposed to the large synthetic bandwidth. In our analysis, we inspect the impact of Doppler modulation on the processing and give recommendations for improvement in terms of the OFDM parameters. We address the problem caused by a correlation artefact and discuss the risk of intersymbol interference (ISI) typical with OFDM. Lastly, we show that our concept has inherent low probability of detection (LPD) characteristics.

Original language	English
Article number	7126155
Pages (from-to)	937-950
Number of pages	14
Journal	IEEE Transactions on Aerospace and Electronic Systems
Volume	51
Issue number	2
DOIs	https://doi.org/10.1109/TAES.2014.130753
Publication status	Published - 01 Apr 2015
Externally published	Yes

Access to Document

10.1109/TAES.2014.130753

Permanent link

Persistent link

Cite this

@article{9b0423a8022f4acba8697698852e312c,

title = "Stepped OFDM radar technique to resolve range and doppler simultaneously",

abstract = "Recent developments involving the orthogonal frequency division multiplexing (OFDM) structure call for new potentials in radar. In this paper, a novel wideband OFDM based waveform is presented and the high range resolution (HRR) processing is derived.We show by means of comparisons with standard wideband waveforms the benefits of this concept. Radial velocities can be retrieved unambiguously and high velocities can be handled at no extra computational effort since the range migration constraint is related to the small pulse bandwidth as opposed to the large synthetic bandwidth. In our analysis, we inspect the impact of Doppler modulation on the processing and give recommendations for improvement in terms of the OFDM parameters. We address the problem caused by a correlation artefact and discuss the risk of intersymbol interference (ISI) typical with OFDM. Lastly, we show that our concept has inherent low probability of detection (LPD) characteristics.",

author = "Gabriel Lellouch and Mishra, {Amit Kumar} and Michael Inggs",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.",

year = "2015",

month = apr,

day = "1",

doi = "10.1109/TAES.2014.130753",

language = "English",

volume = "51",

pages = "937--950",

journal = "IEEE Transactions on Aerospace and Electronic Systems",

issn = "0018-9251",

publisher = "IEEE Press",

number = "2",

}

TY - JOUR

T1 - Stepped OFDM radar technique to resolve range and doppler simultaneously

AU - Lellouch, Gabriel

AU - Mishra, Amit Kumar

AU - Inggs, Michael

PY - 2015/4/1

Y1 - 2015/4/1

N2 - Recent developments involving the orthogonal frequency division multiplexing (OFDM) structure call for new potentials in radar. In this paper, a novel wideband OFDM based waveform is presented and the high range resolution (HRR) processing is derived.We show by means of comparisons with standard wideband waveforms the benefits of this concept. Radial velocities can be retrieved unambiguously and high velocities can be handled at no extra computational effort since the range migration constraint is related to the small pulse bandwidth as opposed to the large synthetic bandwidth. In our analysis, we inspect the impact of Doppler modulation on the processing and give recommendations for improvement in terms of the OFDM parameters. We address the problem caused by a correlation artefact and discuss the risk of intersymbol interference (ISI) typical with OFDM. Lastly, we show that our concept has inherent low probability of detection (LPD) characteristics.

AB - Recent developments involving the orthogonal frequency division multiplexing (OFDM) structure call for new potentials in radar. In this paper, a novel wideband OFDM based waveform is presented and the high range resolution (HRR) processing is derived.We show by means of comparisons with standard wideband waveforms the benefits of this concept. Radial velocities can be retrieved unambiguously and high velocities can be handled at no extra computational effort since the range migration constraint is related to the small pulse bandwidth as opposed to the large synthetic bandwidth. In our analysis, we inspect the impact of Doppler modulation on the processing and give recommendations for improvement in terms of the OFDM parameters. We address the problem caused by a correlation artefact and discuss the risk of intersymbol interference (ISI) typical with OFDM. Lastly, we show that our concept has inherent low probability of detection (LPD) characteristics.

UR - http://www.scopus.com/inward/record.url?scp=84934278161&partnerID=8YFLogxK

U2 - 10.1109/TAES.2014.130753

DO - 10.1109/TAES.2014.130753

M3 - Article

AN - SCOPUS:84934278161

SN - 0018-9251

VL - 51

SP - 937

EP - 950

JO - IEEE Transactions on Aerospace and Electronic Systems

JF - IEEE Transactions on Aerospace and Electronic Systems

IS - 2

M1 - 7126155

ER -

Stepped OFDM radar technique to resolve range and doppler simultaneously

Abstract

Access to Document

Permanent link

Other files and links

Fingerprint

Cite this