| 摘要: |
| 极点作为谐振区雷达目标的最主要电磁特性，具有很大的空间目标识别前景。但是在使用频域观测数据提取目标极点时，存在虚假极点和估计精度问题。针对上述问题，首先通过加窗和截断改进了后时响应信号的获取流程，抑制了虚假极点影响；然后采用最小描述长度法（MDL）估计极点个数，避免了定阶错误引起的虚假极点；最后采用联合矩阵束法估计极点，有效减少了单角度数据估计极点时存在的遗漏极点和虚假极点问题。FEKO软件验证表明，所提算法具有更高的精度和抗噪能力。 |
| 关键词: 空间目标 目标识别 谐振区 极点估计 联合矩阵束 |
| DOI： |
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| 基金项目: |
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| Space target poles estimation based on joint matrix pencil |
| XING Xuran,ZHAO Hongzhong,JIA Xin |
| (Department of Graduate Management，
Aerospace Engineering University，Beijing 101416，China;Department of Optical and Electronic Equipment，
Aerospace Engineering University，Beijing 101416，China) |
| Abstract: |
| As the most important feature of radar target in the resonance region,the pole has great space target recognition foreground.However,when using the frequency domain observation data to extract the target poles,there are many problems such as false poles and limited estimation accuracy.In order to solve above problems,firstly,the acquisition process of the late-time response signal is improved by window and truncation to suppress the false poles.Then,the Minimum Description Length(MDL) method is used to estimate the number of poles so that avoiding the false poles caused by order error.Finally,the joint matrix pencil method is used to estimate the poles so that the problem of missing poles and false poles existing in the estimation of poles by single angle data is effectively reduced.FEKO verification shows that the proposed method has higher accuracy and noise immunity. |
| Key words: space target target recognition resonance region poles estimation joint matrix pencil |
