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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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Keywords:
- coherent field imaging /
- target reconstruction /
- all-phase /
- frequency correction
[1] Holmes R B, Ma S, Bhowmik A, Greninger C 1996 J. Opt. Soc. Am. A 13 351
[2] Stapp J, Spivey B, Chen L, Leon L, Hughes K, Sandler D, Cuellar E L 2006 Proc. SPIE 6307 630701
[3] Cuellar E L, Cooper J, Mathis J, Fairchild P 2008 Proc. SPIE 7094 70940G
[4] Huang X D, Wang Z H, Luo P, L W 2011 Acta Electron. Sin. 39 172 (in Chinese) [黄翔东, 王兆华, 罗蓬, 吕卫 2011 电子学报 39 172]
[5] Chen W, Li Q, Wang Y G 2010 Acta Opt. Sin. 30 3441 (in Chinese) [陈卫, 黎全, 王雁桂 2010 光学学报 30 3441]
[6] Yu S H, Wang J L, Dong L, Liu X Y 2012 Opt. Precision Eng. 20 2275 (in Chinese) [于树海, 王建立, 董磊, 刘欣悦 2012 光学精密工程 20 2275]
[7] Liu Y Y, L Q B, Zhang W X 2012 Acta Phys. Sin. 61 124201 (in Chinese) [刘扬阳, 吕群波, 张文喜 2012 61 124201]
[8] Zhang W X, Xiang L B, Kong X X, Li Y, Wu Z, Zhou Z S 2013 Acta Phys. Sin. 62 164203 (in Chinese) [张文喜, 相里斌, 孔新新, 李扬, 伍洲, 周志盛 2013 62 164203]
[9] Spivey B, Stapp J, Sandler D 2006 Proc. SPIE 6307 630702
[10] Huang X D 2006 Ph. D. Dissertation (Tianjin: Tianjin University) (in Chinese) [黄翔东 2006 博士学位论文(天津: 天津大学)]
[11] Huang X D, Zhu Q Q, Du Y B, Jiang C L 2012 Signal Process. 28 793 (in Chinese) [黄翔东, 朱晴晴, 杜宇彬, 蒋长丽 2012 信号处理 28 793]
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[1] Holmes R B, Ma S, Bhowmik A, Greninger C 1996 J. Opt. Soc. Am. A 13 351
[2] Stapp J, Spivey B, Chen L, Leon L, Hughes K, Sandler D, Cuellar E L 2006 Proc. SPIE 6307 630701
[3] Cuellar E L, Cooper J, Mathis J, Fairchild P 2008 Proc. SPIE 7094 70940G
[4] Huang X D, Wang Z H, Luo P, L W 2011 Acta Electron. Sin. 39 172 (in Chinese) [黄翔东, 王兆华, 罗蓬, 吕卫 2011 电子学报 39 172]
[5] Chen W, Li Q, Wang Y G 2010 Acta Opt. Sin. 30 3441 (in Chinese) [陈卫, 黎全, 王雁桂 2010 光学学报 30 3441]
[6] Yu S H, Wang J L, Dong L, Liu X Y 2012 Opt. Precision Eng. 20 2275 (in Chinese) [于树海, 王建立, 董磊, 刘欣悦 2012 光学精密工程 20 2275]
[7] Liu Y Y, L Q B, Zhang W X 2012 Acta Phys. Sin. 61 124201 (in Chinese) [刘扬阳, 吕群波, 张文喜 2012 61 124201]
[8] Zhang W X, Xiang L B, Kong X X, Li Y, Wu Z, Zhou Z S 2013 Acta Phys. Sin. 62 164203 (in Chinese) [张文喜, 相里斌, 孔新新, 李扬, 伍洲, 周志盛 2013 62 164203]
[9] Spivey B, Stapp J, Sandler D 2006 Proc. SPIE 6307 630702
[10] Huang X D 2006 Ph. D. Dissertation (Tianjin: Tianjin University) (in Chinese) [黄翔东 2006 博士学位论文(天津: 天津大学)]
[11] Huang X D, Zhu Q Q, Du Y B, Jiang C L 2012 Signal Process. 28 793 (in Chinese) [黄翔东, 朱晴晴, 杜宇彬, 蒋长丽 2012 信号处理 28 793]
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