| 摘要: |
| 为获取不同极化通道的微多普勒元素，建立了双通道极化合成孔径雷达微动信号获取模型，详细推导了采用相位中心偏置天线(DPCA)技术剔除地杂波后的极化微多普勒参数化表述。在此基础上，为充分融合各极化通道信息，提出了一种基于Pauli基展开的联合极化微多普勒矢量提取方法，据此可显著增强低信噪比下的微多普勒特征。仿真数据验证了该方法的有效性。 |
| 关键词: 极化合成孔径雷达 微多普勒 Pauli基 相位中心偏置天线 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目(61201369) |
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| Analysis of micro-Doppler combined with polarimetric SAR based on Pauli-basis expansion |
| ZHANG Wei,WANG Li,GENG Jian,HE Zhen-hua |
| () |
| Abstract: |
| In order to obtain the polarimetric micro-Doppler (PolmD) elements from different channels, the signal acquisition geometry of dual-channel polarimetric synthetic aperture radar (PolSAR) is established, and the PolmD mathematical expression with clutter suppressed by displaced phase center antenna (DPCA) is deduced detailedly. And then for better syncretizing the whole polarimetric information, a method of joint PolmD vector extraction based on Pauli-basis expansion is presented, which can enhance the PolmD features markedly under the condition of low signal noise ratio. Simulation results verify the availability of the proposed method. |
| Key words: polarimetric synthetic aperture radar(PolSAR) micro-Doppler Pauli-basis displaced phase center antenna |
《电讯技术》编辑部 