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Passive Radar DPCA Schemes With Adaptive Channel Calibration.

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Title: Passive Radar DPCA Schemes With Adaptive Channel Calibration.
Authors: Paolo Blasone, Giovanni1 (AUTHOR), Colone, Fabiola1 (AUTHOR), Lombardo, Pierfrancesco1 (AUTHOR), Wojaczek, Philipp2 (AUTHOR), Cristallini, Diego2 (AUTHOR)
Source: IEEE Transactions on Aerospace & Electronic Systems. Oct2020, Vol. 56 Issue 5, p4014-4034. 21p.
Subjects: Passive radar, Calibration, Signal processing, Bistatic radar, Radar antennas
Abstract: This article addresses the problem of direct signal interference (DSI) and clutter cancellation for passive radar systems on moving platforms employing displaced phase centre antenna (DPCA) approach. Attention is focused on the development of signal processing strategies able to compensate for the limitations deriving from amplitude and phase imbalances that affect the two channels employed on receive. First, we show that using the signal received from the illuminator of opportunity as a source for channels calibration might be ineffective when DSI and clutter echoes have different directions of arrival, due to the effect of angle-dependent channel imbalance. Then, a two-stage strategy is proposed, consisting of a preliminary DSI removal stage at each receive channel, followed by a clutter-based calibration approach that basically enables an effective DPCA clutter suppression. Different strategies for channel calibration are proposed, aimed at compensating for potential angle and range-dependent channel errors, based on the maximization of the cancellation performance. Effectiveness of this scheme is shown against the experimental data from a DVB-T based moving passive radar, in the presence of both real and synthetic moving targets. [ABSTRACT FROM AUTHOR]
Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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  Data: Passive Radar DPCA Schemes With Adaptive Channel Calibration.
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  Data: <searchLink fieldCode="JN" term="%22IEEE+Transactions+on+Aerospace+%26+Electronic+Systems%22">IEEE Transactions on Aerospace & Electronic Systems</searchLink>. Oct2020, Vol. 56 Issue 5, p4014-4034. 21p.
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  Data: <searchLink fieldCode="DE" term="%22Passive+radar%22">Passive radar</searchLink><br /><searchLink fieldCode="DE" term="%22Calibration%22">Calibration</searchLink><br /><searchLink fieldCode="DE" term="%22Signal+processing%22">Signal processing</searchLink><br /><searchLink fieldCode="DE" term="%22Bistatic+radar%22">Bistatic radar</searchLink><br /><searchLink fieldCode="DE" term="%22Radar+antennas%22">Radar antennas</searchLink>
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  Data: This article addresses the problem of direct signal interference (DSI) and clutter cancellation for passive radar systems on moving platforms employing displaced phase centre antenna (DPCA) approach. Attention is focused on the development of signal processing strategies able to compensate for the limitations deriving from amplitude and phase imbalances that affect the two channels employed on receive. First, we show that using the signal received from the illuminator of opportunity as a source for channels calibration might be ineffective when DSI and clutter echoes have different directions of arrival, due to the effect of angle-dependent channel imbalance. Then, a two-stage strategy is proposed, consisting of a preliminary DSI removal stage at each receive channel, followed by a clutter-based calibration approach that basically enables an effective DPCA clutter suppression. Different strategies for channel calibration are proposed, aimed at compensating for potential angle and range-dependent channel errors, based on the maximization of the cancellation performance. Effectiveness of this scheme is shown against the experimental data from a DVB-T based moving passive radar, in the presence of both real and synthetic moving targets. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of IEEE Transactions on Aerospace & Electronic Systems is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1109/TAES.2020.2987478
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 21
        StartPage: 4014
    Subjects:
      – SubjectFull: Passive radar
        Type: general
      – SubjectFull: Calibration
        Type: general
      – SubjectFull: Signal processing
        Type: general
      – SubjectFull: Bistatic radar
        Type: general
      – SubjectFull: Radar antennas
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      – TitleFull: Passive Radar DPCA Schemes With Adaptive Channel Calibration.
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            NameFull: Lombardo, Pierfrancesco
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            NameFull: Cristallini, Diego
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              M: 10
              Text: Oct2020
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              Y: 2020
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