| 向前,方重华,熊波,刘义.复杂目标散射均值预估方法[J].装备环境工程,2015,12(1):31-33,72. XIANG Qian,FANG Chong-hua,XIONG Bo,LIU Yi.Estimation Method of Scattering Mean Value for Complex Target[J].Equipment Environmental Engineering,2015,12(1):31-33,72. |
| 复杂目标散射均值预估方法 |
| Estimation Method of Scattering Mean Value for Complex Target |
| 投稿时间：2014-09-04 修订日期：2015-02-15 |
| DOI：10.7643/issn.1672-9242.2015.01.007 |
| 中文关键词: 近场散射 MLFMM 均值预估方法 |
| 英文关键词:near-field scattering MLFMM mean value estimation method |
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| 中文摘要: |
| 目的 对小于传统远场距离条件下目标散射特性均值进行测量。方法 通过MLFMM软件仿真手段， 给出舰船模型在自由空间的近场散射仿真与分析结果， 包括随入射频率和探测距离的变化曲线。结果 随着探测距离的缩减， 舰船目标的近场散射与远场散射的差别较大， 但二者的均值却较为一致。基于此， 提出基于成像理论的定量预估均值方法， 通过近场散射特性评估， 所获得的结果与远场条件下的均值结果基本一致。结论 仿真结果验证了该方法的准确性，提出的分析方法可为大型目标散射特性测量提供解决途径。 |
| 英文摘要: |
| 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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