Coherent parameters estimation and coherent performance analysis for distributed aperture coherent radar
The closed-form CRB (cramer-rao bounds) of the coherent parameters estimation, which include time delay differences and total phase differences, are derived for the distributed aperture coherent radar with general architecture firstly. Then under the assumption that time delay and phase synchronizat...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2015-03-01
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| Series: | Tongxin xuebao |
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| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015067/ |
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| _version_ | 1841539685276450816 |
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| author | Jing SONG Jian-yun ZHANG Wen-gang ZHANG |
| author_facet | Jing SONG Jian-yun ZHANG Wen-gang ZHANG |
| author_sort | Jing SONG |
| collection | DOAJ |
| description | The closed-form CRB (cramer-rao bounds) of the coherent parameters estimation, which include time delay differences and total phase differences, are derived for the distributed aperture coherent radar with general architecture firstly. Then under the assumption that time delay and phase synchronization errors are all existing, the performance bound of oSNRg (output signal-to-noise ratio gain) is developed based on the aforementioned CRB (Cramer-rao bounds). It is concluded that: the CRB of total phase differences is independent on the carrier frequency and effective bandwidth. More transmitters give higher oSNRg. However, as the number of receivers increase, the oSNRg gradually improve with the input SNR being high sufficiently, and worsen with the input SNR being low. Finally, the numerical examples dem-onstrate the validity of the theoretical results. |
| format | Article |
| id | doaj-art-c247f5beb8484e958b89cf4d2eea2669 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2015-03-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-c247f5beb8484e958b89cf4d2eea26692025-01-14T06:45:43ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2015-03-013613013859690844Coherent parameters estimation and coherent performance analysis for distributed aperture coherent radarJing SONGJian-yun ZHANGWen-gang ZHANGThe closed-form CRB (cramer-rao bounds) of the coherent parameters estimation, which include time delay differences and total phase differences, are derived for the distributed aperture coherent radar with general architecture firstly. Then under the assumption that time delay and phase synchronization errors are all existing, the performance bound of oSNRg (output signal-to-noise ratio gain) is developed based on the aforementioned CRB (Cramer-rao bounds). It is concluded that: the CRB of total phase differences is independent on the carrier frequency and effective bandwidth. More transmitters give higher oSNRg. However, as the number of receivers increase, the oSNRg gradually improve with the input SNR being high sufficiently, and worsen with the input SNR being low. Finally, the numerical examples dem-onstrate the validity of the theoretical results.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015067/fully coherentCramer-rao boundparameters estimationFisher information matrix |
| spellingShingle | Jing SONG Jian-yun ZHANG Wen-gang ZHANG Coherent parameters estimation and coherent performance analysis for distributed aperture coherent radar Tongxin xuebao fully coherent Cramer-rao bound parameters estimation Fisher information matrix |
| title | Coherent parameters estimation and coherent performance analysis for distributed aperture coherent radar |
| title_full | Coherent parameters estimation and coherent performance analysis for distributed aperture coherent radar |
| title_fullStr | Coherent parameters estimation and coherent performance analysis for distributed aperture coherent radar |
| title_full_unstemmed | Coherent parameters estimation and coherent performance analysis for distributed aperture coherent radar |
| title_short | Coherent parameters estimation and coherent performance analysis for distributed aperture coherent radar |
| title_sort | coherent parameters estimation and coherent performance analysis for distributed aperture coherent radar |
| topic | fully coherent Cramer-rao bound parameters estimation Fisher information matrix |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015067/ |
| work_keys_str_mv | AT jingsong coherentparametersestimationandcoherentperformanceanalysisfordistributedaperturecoherentradar AT jianyunzhang coherentparametersestimationandcoherentperformanceanalysisfordistributedaperturecoherentradar AT wengangzhang coherentparametersestimationandcoherentperformanceanalysisfordistributedaperturecoherentradar |