Coherent FDA Receiver and Joint Range-Space-Time Processing
(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.
(Less)
- author
- Jia, Wenkai ; Jakobsson, Andreas LU and Wang, Wen Qin
- organization
- publishing date
- 2023
- 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}}, }