Imaging crosstalk analyzing and suppressing for Multi-TDICCD mosaic remote sensing camera

	Imaging crosstalk analyzing and suppressing for Multi-TDICCD mosaic remote sensing camera
	Zhang G.; Zheng L.; He X.; Qu H.; Jin G.
	2014
发表期刊	Guangxue Xuebao/Acta Optica Sinica
ISSN	ISBN/02532239
卷号	34 期号:7
摘要	In order to solve the imaging crosstalk between charge coupled device (CCD) channels and improve the signal-to-noise ratio (SNR) and imaging quality of multi time delay integration (TDI) charge coupled device mosaic remote sensing camera, a mathematical model of imaging crosstalk is established based on Fourier series analysis of the periodic signal. According to the results of mathematical analysis, the root cause of multi-TDICCD imaging crosstalk between different channels is proposed to be the unsynchronized TDICCD imaging circuit working, which causes high-frequency disturbance on the power ground plane and eventually affects the effective video signals acquisition of neighboring TDICCD. Referring to practical project, isolated CCD power supply, shared unified system clock and other methods are adopted to optimize multi-TDICCD imaging circuit system to suppress the occurrence of imaging crosstalk. The imaging quality and SNR are tested after improvement. Experimental results indicate that the adopted methods which can prevent the occurrence on imaging crosstalk between different CCD channels are effective, and the SNR is improved significantly. When the radiance is 42.6 W/(m2Sr), the camera SNR increases 18.85 dB, reaching to 50.42 dB. The image quality of outside scene imaging is also improved significantly, which can meet the requirements of practical engineering of TDICCD remote sensing camera.
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/44061
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhang G.,Zheng L.,He X.,et al. Imaging crosstalk analyzing and suppressing for Multi-TDICCD mosaic remote sensing camera[J]. Guangxue Xuebao/Acta Optica Sinica,2014,34(7).
APA	Zhang G.,Zheng L.,He X.,Qu H.,&Jin G..(2014).Imaging crosstalk analyzing and suppressing for Multi-TDICCD mosaic remote sensing camera.Guangxue Xuebao/Acta Optica Sinica,34(7).
MLA	Zhang G.,et al."Imaging crosstalk analyzing and suppressing for Multi-TDICCD mosaic remote sensing camera".Guangxue Xuebao/Acta Optica Sinica 34.7(2014).

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