Auto-calibration method and performance analysis for noncircular sources based on instrumental sensors
An improved direction-finding algorithm for noncircular sources was proposed in the presence of angularly dependent gain and phase errors, which is called NC-ISM based on the fundamental principle of ISM (instrumental sen-sor method). Through the application of the extended data model of non-circula...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2014-02-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.02.020/ |
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| _version_ | 1841539720729853952 |
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| author | Jie-xin YIN Ying WU Ding WANG |
| author_facet | Jie-xin YIN Ying WU Ding WANG |
| author_sort | Jie-xin YIN |
| collection | DOAJ |
| description | An improved direction-finding algorithm for noncircular sources was proposed in the presence of angularly dependent gain and phase errors, which is called NC-ISM based on the fundamental principle of ISM (instrumental sen-sor method). Through the application of the extended data model of non-circular signals with maximum rate, the pro-posed algorithm enhances the information utilization leading to advancement of estimation accuracy and twice the num-ber of sources that can be distinguished. The performance study on NC-ISM proved the statistical consistency of the pa-rameter estimation, and a theoretical derivation for the closed-form expression of the mean square error (MSE) of NC-ISM estimation was presented under the influence of modeling errors of instrumental sensors by the first-order analysis. Therefore, the analysis can provide theoretical support for practical applications. The simulation results not only verify the effectiveness of theoretical derivation, but also illustrate that NC-ISM is more robust than ISM with respect to signal-to-noise ratio as well as modeling errors. |
| format | Article |
| id | doaj-art-38612ddb09104a8984a743a95be5f5e2 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2014-02-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-38612ddb09104a8984a743a95be5f5e22025-01-14T06:42:47ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2014-02-013515316559679695Auto-calibration method and performance analysis for noncircular sources based on instrumental sensorsJie-xin YINYing WUDing WANGAn improved direction-finding algorithm for noncircular sources was proposed in the presence of angularly dependent gain and phase errors, which is called NC-ISM based on the fundamental principle of ISM (instrumental sen-sor method). Through the application of the extended data model of non-circular signals with maximum rate, the pro-posed algorithm enhances the information utilization leading to advancement of estimation accuracy and twice the num-ber of sources that can be distinguished. The performance study on NC-ISM proved the statistical consistency of the pa-rameter estimation, and a theoretical derivation for the closed-form expression of the mean square error (MSE) of NC-ISM estimation was presented under the influence of modeling errors of instrumental sensors by the first-order analysis. Therefore, the analysis can provide theoretical support for practical applications. The simulation results not only verify the effectiveness of theoretical derivation, but also illustrate that NC-ISM is more robust than ISM with respect to signal-to-noise ratio as well as modeling errors.http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.02.020/angularly dependent gain and phase errorISMnoncircular signalstatistical consistencymodeling error of instrumental sensor |
| spellingShingle | Jie-xin YIN Ying WU Ding WANG Auto-calibration method and performance analysis for noncircular sources based on instrumental sensors Tongxin xuebao angularly dependent gain and phase error ISM noncircular signal statistical consistency modeling error of instrumental sensor |
| title | Auto-calibration method and performance analysis for noncircular sources based on instrumental sensors |
| title_full | Auto-calibration method and performance analysis for noncircular sources based on instrumental sensors |
| title_fullStr | Auto-calibration method and performance analysis for noncircular sources based on instrumental sensors |
| title_full_unstemmed | Auto-calibration method and performance analysis for noncircular sources based on instrumental sensors |
| title_short | Auto-calibration method and performance analysis for noncircular sources based on instrumental sensors |
| title_sort | auto calibration method and performance analysis for noncircular sources based on instrumental sensors |
| topic | angularly dependent gain and phase error ISM noncircular signal statistical consistency modeling error of instrumental sensor |
| url | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.02.020/ |
| work_keys_str_mv | AT jiexinyin autocalibrationmethodandperformanceanalysisfornoncircularsourcesbasedoninstrumentalsensors AT yingwu autocalibrationmethodandperformanceanalysisfornoncircularsourcesbasedoninstrumentalsensors AT dingwang autocalibrationmethodandperformanceanalysisfornoncircularsourcesbasedoninstrumentalsensors |