Extended Target Recognition in Cognitive Radar Networks
We address the problem of adaptive waveform design for extended target recognition in cognitive radar networks. A closed-loop active target recognition radar system is extended to the case of a centralized cognitive radar network, in which a generalized likelihood ratio (GLR) based sequential hypoth...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2010-11-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/10/11/10181/ |
| _version_ | 1811184115152584704 |
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| author | Xiqin Wang Yimin Liu Huadong Meng Yimin Wei |
| author_facet | Xiqin Wang Yimin Liu Huadong Meng Yimin Wei |
| author_sort | Xiqin Wang |
| collection | DOAJ |
| description | We address the problem of adaptive waveform design for extended target recognition in cognitive radar networks. A closed-loop active target recognition radar system is extended to the case of a centralized cognitive radar network, in which a generalized likelihood ratio (GLR) based sequential hypothesis testing (SHT) framework is employed. Using Doppler velocities measured by multiple radars, the target aspect angle for each radar is calculated. The joint probability of each target hypothesis is then updated using observations from different radar line of sights (LOS). Based on these probabilities, a minimum correlation algorithm is proposed to adaptively design the transmit waveform for each radar in an amplitude fluctuation situation. Simulation results demonstrate performance improvements due to the cognitive radar network and adaptive waveform design. Our minimum correlation algorithm outperforms the eigen-waveform solution and other non-cognitive waveform design approaches. |
| first_indexed | 2024-04-11T13:07:44Z |
| format | Article |
| id | doaj.art-fba1620e1f4843558748151fa911675e |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T13:07:44Z |
| publishDate | 2010-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-fba1620e1f4843558748151fa911675e2022-12-22T04:22:40ZengMDPI AGSensors1424-82202010-11-011011101811019710.3390/s101110181Extended Target Recognition in Cognitive Radar NetworksXiqin WangYimin LiuHuadong MengYimin WeiWe address the problem of adaptive waveform design for extended target recognition in cognitive radar networks. A closed-loop active target recognition radar system is extended to the case of a centralized cognitive radar network, in which a generalized likelihood ratio (GLR) based sequential hypothesis testing (SHT) framework is employed. Using Doppler velocities measured by multiple radars, the target aspect angle for each radar is calculated. The joint probability of each target hypothesis is then updated using observations from different radar line of sights (LOS). Based on these probabilities, a minimum correlation algorithm is proposed to adaptively design the transmit waveform for each radar in an amplitude fluctuation situation. Simulation results demonstrate performance improvements due to the cognitive radar network and adaptive waveform design. Our minimum correlation algorithm outperforms the eigen-waveform solution and other non-cognitive waveform design approaches.http://www.mdpi.com/1424-8220/10/11/10181/cognitive radar networkradar waveform designtarget recognition |
| spellingShingle | Xiqin Wang Yimin Liu Huadong Meng Yimin Wei Extended Target Recognition in Cognitive Radar Networks Sensors cognitive radar network radar waveform design target recognition |
| title | Extended Target Recognition in Cognitive Radar Networks |
| title_full | Extended Target Recognition in Cognitive Radar Networks |
| title_fullStr | Extended Target Recognition in Cognitive Radar Networks |
| title_full_unstemmed | Extended Target Recognition in Cognitive Radar Networks |
| title_short | Extended Target Recognition in Cognitive Radar Networks |
| title_sort | extended target recognition in cognitive radar networks |
| topic | cognitive radar network radar waveform design target recognition |
| url | http://www.mdpi.com/1424-8220/10/11/10181/ |
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