相干场成像全相位目标直接重构法?

物理学报

相干场成像全相位目标直接重构法?

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曹蓓, 罗秀娟, 陈明徕, 张羽. 2015: 相干场成像全相位目标直接重构法?, 物理学报, null(12): 124205. doi: 10.7498/aps.64.124205

引用本文:

曹蓓, 罗秀娟, 陈明徕, 张羽. 2015: 相干场成像全相位目标直接重构法?, 物理学报, null(12): 124205. doi: 10.7498/aps.64.124205

Cao Bei, Luo Xiu-Juan, Chen Ming-Lai, Zhang Yu. 2015: All-phase target reconstruction metho d for coherent field imaging, Acta Physica Sinica, null(12): 124205. doi: 10.7498/aps.64.124205

Citation:

Cao Bei, Luo Xiu-Juan, Chen Ming-Lai, Zhang Yu. 2015: All-phase target reconstruction metho d for coherent field imaging, Acta Physica Sinica, null(12): 124205. doi: 10.7498/aps.64.124205

相干场成像全相位目标直接重构法?

中国科学院西安光学精密机械研究所,西安,710119

All-phase target reconstruction metho d for coherent field imaging

摘要: 回波信号处理和目标重构算法是相干场成像中的核心数据处理技术，直接影响系统的成像质量。基于全相位谱分析理论，提出一种新的系统融合处理算法，对接收端回波信号直接提取全相位谱相位及幅值信息实现目标图像重构，能够有效抑制各种因素带来的频率误差。经室外实验系统验证，成像能力大大优于传统重构算法，重构目标分辨率接近理论极限值。
- 相干场成像 /
- 目标重构 /
- 全相位 /
- 频谱校正
Abstract: Received signal processing and target reconstruction technique plays a key role in coherent field imaging, and directly influences the quality of the reconstructed image of a target. Based on all-phase fast Fourier transformation (FFT) spectrum analysis theory, a new processing and reconstruction method is proposed. By directly extracting the phase and amplitude information from all-phase FFT spectrum of the return signal, the proposed all-phase target reconstruction method is capable of inhibiting the frequency error caused by many factors, thus reconstructing the target image more precisely. The validity of the proposed method is proved by a coherent field imaging system in outdoor environments, and it has a better reconstruction performance than a traditional method. The resolution of the reconstructed target is close to a theoretical diffraction limit.

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相干场成像全相位目标直接重构法?

中国科学院西安光学精密机械研究所,西安,710119

关键词:

摘要: 回波信号处理和目标重构算法是相干场成像中的核心数据处理技术，直接影响系统的成像质量。基于全相位谱分析理论，提出一种新的系统融合处理算法，对接收端回波信号直接提取全相位谱相位及幅值信息实现目标图像重构，能够有效抑制各种因素带来的频率误差。经室外实验系统验证，成像能力大大优于传统重构算法，重构目标分辨率接近理论极限值。

English Abstract

All-phase target reconstruction metho d for coherent field imaging

中国科学院西安光学精密机械研究所,西安,710119

Keywords:

Abstract: Received signal processing and target reconstruction technique plays a key role in coherent field imaging, and directly influences the quality of the reconstructed image of a target. Based on all-phase fast Fourier transformation (FFT) spectrum analysis theory, a new processing and reconstruction method is proposed. By directly extracting the phase and amplitude information from all-phase FFT spectrum of the return signal, the proposed all-phase target reconstruction method is capable of inhibiting the frequency error caused by many factors, thus reconstructing the target image more precisely. The validity of the proposed method is proved by a coherent field imaging system in outdoor environments, and it has a better reconstruction performance than a traditional method. The resolution of the reconstructed target is close to a theoretical diffraction limit.

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