Whitening Degree Evaluation Method to Test Estimate Accuracy of Speckle Covariance Matrix
In the background of sea clutter, the accuracy of adaptive target detection is heavily influenced by the estimated performance of speckle covariance matrix. Generally, Normalized Frobenius Norm (NFN) is used to test the estimated accuracy of different speckle covariance matrix estimators, in which t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
China Science Publishing & Media Ltd. (CSPM)
2017-06-01
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| Series: | Leida xuebao |
| Subjects: | |
| Online Access: | http://radars.ie.ac.cn/CN/html/20170307.htm |
| _version_ | 1797430916158586880 |
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| author | Yu Han Shui Penglang Yang Chunjiao Shi Sainan |
| author_facet | Yu Han Shui Penglang Yang Chunjiao Shi Sainan |
| author_sort | Yu Han |
| collection | DOAJ |
| description | In the background of sea clutter, the accuracy of adaptive target detection is heavily influenced by the estimated performance of speckle covariance matrix. Generally, Normalized Frobenius Norm (NFN) is used to test the estimated accuracy of different speckle covariance matrix estimators, in which the requirement of a known real covariance matrix is hardly realized in the radar system. Therefore, in this study, a whitening degree evaluation method is proposed wherein the decorrelation of speckle covariance matrix in whitening filter processing of the radar system is fully exploited. It considers the correlation degree among pulses in the whitening clutter vector as the criterion to evaluate the estimate error of the speckle covariance matrix. The proposed method shows consistent conclusions with NFN on simulated data and also avoids limitations of the latter method in real data processing. |
| first_indexed | 2024-03-09T09:34:25Z |
| format | Article |
| id | doaj.art-fe3adc4dc9bf4fbb86f51525346e28e6 |
| institution | Directory Open Access Journal |
| issn | 2095-283X 2095-283X |
| language | English |
| last_indexed | 2024-03-09T09:34:25Z |
| publishDate | 2017-06-01 |
| publisher | China Science Publishing & Media Ltd. (CSPM) |
| record_format | Article |
| series | Leida xuebao |
| spelling | doaj.art-fe3adc4dc9bf4fbb86f51525346e28e62023-12-02T02:37:36ZengChina Science Publishing & Media Ltd. (CSPM)Leida xuebao2095-283X2095-283X2017-06-016328529110.12000/JR16146Whitening Degree Evaluation Method to Test Estimate Accuracy of Speckle Covariance MatrixYu HanShui PenglangYang ChunjiaoShi SainanIn the background of sea clutter, the accuracy of adaptive target detection is heavily influenced by the estimated performance of speckle covariance matrix. Generally, Normalized Frobenius Norm (NFN) is used to test the estimated accuracy of different speckle covariance matrix estimators, in which the requirement of a known real covariance matrix is hardly realized in the radar system. Therefore, in this study, a whitening degree evaluation method is proposed wherein the decorrelation of speckle covariance matrix in whitening filter processing of the radar system is fully exploited. It considers the correlation degree among pulses in the whitening clutter vector as the criterion to evaluate the estimate error of the speckle covariance matrix. The proposed method shows consistent conclusions with NFN on simulated data and also avoids limitations of the latter method in real data processing.http://radars.ie.ac.cn/CN/html/20170307.htmCovariance matrix estimationWhitening degree evaluationNormalized Frobenius Norm (NFN)Real covariance matrix |
| spellingShingle | Yu Han Shui Penglang Yang Chunjiao Shi Sainan Whitening Degree Evaluation Method to Test Estimate Accuracy of Speckle Covariance Matrix Leida xuebao Covariance matrix estimation Whitening degree evaluation Normalized Frobenius Norm (NFN) Real covariance matrix |
| title | Whitening Degree Evaluation Method to Test Estimate Accuracy of Speckle Covariance Matrix |
| title_full | Whitening Degree Evaluation Method to Test Estimate Accuracy of Speckle Covariance Matrix |
| title_fullStr | Whitening Degree Evaluation Method to Test Estimate Accuracy of Speckle Covariance Matrix |
| title_full_unstemmed | Whitening Degree Evaluation Method to Test Estimate Accuracy of Speckle Covariance Matrix |
| title_short | Whitening Degree Evaluation Method to Test Estimate Accuracy of Speckle Covariance Matrix |
| title_sort | whitening degree evaluation method to test estimate accuracy of speckle covariance matrix |
| topic | Covariance matrix estimation Whitening degree evaluation Normalized Frobenius Norm (NFN) Real covariance matrix |
| url | http://radars.ie.ac.cn/CN/html/20170307.htm |
| work_keys_str_mv | AT yuhan whiteningdegreeevaluationmethodtotestestimateaccuracyofspecklecovariancematrix AT shuipenglang whiteningdegreeevaluationmethodtotestestimateaccuracyofspecklecovariancematrix AT yangchunjiao whiteningdegreeevaluationmethodtotestestimateaccuracyofspecklecovariancematrix AT shisainan whiteningdegreeevaluationmethodtotestestimateaccuracyofspecklecovariancematrix |