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Coherent FDA Receiver and Joint Range-Space-Time Processing

Jia, Wenkai ; Jakobsson, Andreas LU orcid and Wang, Wen Qin (2023) In IEEE Transactions on Antennas and Propagation p.1-1
Abstract

When a target is masked by mainlobe clutter with the same Doppler frequency, it is difficult for conventional airborne radars to determine whether a target is present in a given observation using regular space-time adaptive processing techniques. Different from phased-array and multiple-input multiple-output (MIMO) arrays, frequency diverse arrays (FDAs) employ frequency offsets across the array elements, delivering additional range-controllable degrees of freedom, potentially enabling suppression for this kind of clutter. However, the reception of coherent FDA systems employing small frequency offsets and achieving high transmit gain can be further improved. To this end, this work proposes an coherent airborne FDA radar receiver that... (More)

When a target is masked by mainlobe clutter with the same Doppler frequency, it is difficult for conventional airborne radars to determine whether a target is present in a given observation using regular space-time adaptive processing techniques. Different from phased-array and multiple-input multiple-output (MIMO) arrays, frequency diverse arrays (FDAs) employ frequency offsets across the array elements, delivering additional range-controllable degrees of freedom, potentially enabling suppression for this kind of clutter. However, the reception of coherent FDA systems employing small frequency offsets and achieving high transmit gain can be further improved. To this end, this work proposes an coherent airborne FDA radar receiver that explores the orthogonality of echo signals in the Doppler domain, allowing a joint space-time processing module to be deployed to separate the aliased returns. The resulting range-space-time adaptive processing allows for a preferable detection performance for coherent airborne FDA radars as compared to current alternative techniques.

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Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Contribution to journal
publication status
in press
subject
keywords
Airborne radar, airborne radar, Clutter, Doppler effect, Doppler orthogonality, Filtering, Frequency diverse array (FDA), Radar, Radar antennas, Receiving antennas, space-time adaptive processing
in
IEEE Transactions on Antennas and Propagation
pages
1 pages
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85174836223
ISSN
0018-926X
DOI
10.1109/TAP.2023.3321344
language
English
LU publication?
yes
additional info
Publisher Copyright: IEEE
id
db72d14d-0e41-45bf-a308-0692577894e2
date added to LUP
2023-12-13 15:12:05
date last changed
2024-02-09 10:37:09
@article{db72d14d-0e41-45bf-a308-0692577894e2,
  abstract     = {{<p>When a target is masked by mainlobe clutter with the same Doppler frequency, it is difficult for conventional airborne radars to determine whether a target is present in a given observation using regular space-time adaptive processing techniques. Different from phased-array and multiple-input multiple-output (MIMO) arrays, frequency diverse arrays (FDAs) employ frequency offsets across the array elements, delivering additional range-controllable degrees of freedom, potentially enabling suppression for this kind of clutter. However, the reception of coherent FDA systems employing small frequency offsets and achieving high transmit gain can be further improved. To this end, this work proposes an coherent airborne FDA radar receiver that explores the orthogonality of echo signals in the Doppler domain, allowing a joint space-time processing module to be deployed to separate the aliased returns. The resulting range-space-time adaptive processing allows for a preferable detection performance for coherent airborne FDA radars as compared to current alternative techniques.</p>}},
  author       = {{Jia, Wenkai and Jakobsson, Andreas and Wang, Wen Qin}},
  issn         = {{0018-926X}},
  keywords     = {{Airborne radar; airborne radar; Clutter; Doppler effect; Doppler orthogonality; Filtering; Frequency diverse array (FDA); Radar; Radar antennas; Receiving antennas; space-time adaptive processing}},
  language     = {{eng}},
  pages        = {{1--1}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Transactions on Antennas and Propagation}},
  title        = {{Coherent FDA Receiver and Joint Range-Space-Time Processing}},
  url          = {{http://dx.doi.org/10.1109/TAP.2023.3321344}},
  doi          = {{10.1109/TAP.2023.3321344}},
  year         = {{2023}},
}