A Computationally Efficient Estimator for the Target Angle, Delay, and Doppler Parameters in Passive Radar
The azimuth, elevation, time delay (TD), and Doppler shift (DS) of the target echo signal are important parameters for target localization in passive radar. In this paper, for the problem of joint estimation of target azimuth, elevation, TD, and DS parameters in passive radar, a computationally effi...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2023/5551000 |
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| author | Jing Yang Chengcheng Liu Jie Huang Dapeng Liu Ting Ding Jiandong Zhu Xia Li |
| author_facet | Jing Yang Chengcheng Liu Jie Huang Dapeng Liu Ting Ding Jiandong Zhu Xia Li |
| author_sort | Jing Yang |
| collection | DOAJ |
| description | The azimuth, elevation, time delay (TD), and Doppler shift (DS) of the target echo signal are important parameters for target localization in passive radar. In this paper, for the problem of joint estimation of target azimuth, elevation, TD, and DS parameters in passive radar, a computationally efficient estimator is proposed based on segmented coherent integration and uniform circular array (UCA) interferometer direction finding. First, according to the parameters of the target motion and illuminators of opportunity, the reference and surveillance signals are divided into segments, with fast time within a segment and slow time across the segments; then, matching filtering along the fast time and fast Fourier transform (FFT) along the slow time are performed to accumulate the target echo energy to the same delay-Doppler cell; finally, the UCA interferometer two-dimensional direction finding is performed at the delay-Doppler cell where the target echo is located, to achieve the target azimuth and elevation estimate. Simulation results demonstrate that the proposed algorithm has low computational complexity, high real-time processing capability, and can achieve efficient and real-time estimation of the azimuth, elevation, TD, and DS parameters of weak target echoes in passive radar. |
| format | Article |
| id | doaj-art-ea9c577e24444a8caeb06013bf15dc97 |
| institution | OA Journals |
| issn | 1687-5877 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-ea9c577e24444a8caeb06013bf15dc972025-08-20T02:22:02ZengWileyInternational Journal of Antennas and Propagation1687-58772023-01-01202310.1155/2023/5551000A Computationally Efficient Estimator for the Target Angle, Delay, and Doppler Parameters in Passive RadarJing Yang0Chengcheng Liu1Jie Huang2Dapeng Liu3Ting Ding4Jiandong Zhu5Xia Li6National Digital Switching System Engineering and Technological Research CenterNational Digital Switching System Engineering and Technological Research CenterNational Digital Switching System Engineering and Technological Research CenterChina Aerospace Science and Technology Corporation the 9th AcademyHenan High-Speed Railway Operation and Maintenance Engineering Research CenterHenan High-Speed Railway Operation and Maintenance Engineering Research CenterNational Digital Switching System Engineering and Technological Research CenterThe azimuth, elevation, time delay (TD), and Doppler shift (DS) of the target echo signal are important parameters for target localization in passive radar. In this paper, for the problem of joint estimation of target azimuth, elevation, TD, and DS parameters in passive radar, a computationally efficient estimator is proposed based on segmented coherent integration and uniform circular array (UCA) interferometer direction finding. First, according to the parameters of the target motion and illuminators of opportunity, the reference and surveillance signals are divided into segments, with fast time within a segment and slow time across the segments; then, matching filtering along the fast time and fast Fourier transform (FFT) along the slow time are performed to accumulate the target echo energy to the same delay-Doppler cell; finally, the UCA interferometer two-dimensional direction finding is performed at the delay-Doppler cell where the target echo is located, to achieve the target azimuth and elevation estimate. Simulation results demonstrate that the proposed algorithm has low computational complexity, high real-time processing capability, and can achieve efficient and real-time estimation of the azimuth, elevation, TD, and DS parameters of weak target echoes in passive radar.http://dx.doi.org/10.1155/2023/5551000 |
| spellingShingle | Jing Yang Chengcheng Liu Jie Huang Dapeng Liu Ting Ding Jiandong Zhu Xia Li A Computationally Efficient Estimator for the Target Angle, Delay, and Doppler Parameters in Passive Radar International Journal of Antennas and Propagation |
| title | A Computationally Efficient Estimator for the Target Angle, Delay, and Doppler Parameters in Passive Radar |
| title_full | A Computationally Efficient Estimator for the Target Angle, Delay, and Doppler Parameters in Passive Radar |
| title_fullStr | A Computationally Efficient Estimator for the Target Angle, Delay, and Doppler Parameters in Passive Radar |
| title_full_unstemmed | A Computationally Efficient Estimator for the Target Angle, Delay, and Doppler Parameters in Passive Radar |
| title_short | A Computationally Efficient Estimator for the Target Angle, Delay, and Doppler Parameters in Passive Radar |
| title_sort | computationally efficient estimator for the target angle delay and doppler parameters in passive radar |
| url | http://dx.doi.org/10.1155/2023/5551000 |
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