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| Estimation Method of Scattering Mean Value for Complex Target |
| Received:September 04, 2014 Revised:February 15, 2015 |
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| DOI：10.7643/issn.1672-9242.2015.01.007 |
| KeyWord:near-field scattering MLFMM mean value estimation method |
| Author | Institution |
| XIANG Qian |
Navel Deputy of 701 Institute， Wuhan ， China |
| FANG Chong-hua |
The National Key Laboratory of EMC， China Ship Development and Design Center， Wuhan ， China |
| XIONG Bo |
The National Key Laboratory of EMC， China Ship Development and Design Center， Wuhan ， China |
| LIU Yi |
The National Key Laboratory of EMC， China Ship Development and Design Center， Wuhan ， China |
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| Abstract: |
| Objective To measure the mean value of target scattering characteristics in the distance of far field. Methods By MLFMM software simulation tools， the simulation and analysis results of near-field scatting for ship model in free space were given, including the variation curves of incident frequency and detection distance. Results The results showed that the difference between near-field and far-field scatting of the ship target became larger with the reduced detection range, but the mean values were relatively consistent. Based on this result, the quantitative mean value estimation method based on imaging theory was proposed. Through the evaluation of near-field scattering characteristics, the mean value could be obtained, which was basically consistent with the mean value in far field. Conclusion The simulation results verified the accuracy of the method. The proposed analytical method could provide solutions for scattering characteristic measurement of large targets. |
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