Journal of Atmospheric and Environmental Optics, Volume. 14, Issue 5, 385(2019)
Design of Driving Circuit of TDI-CCD for Ocean Observation
Because array CCD and linear CCD don’t meet the requirement of observing the ocean goal, the time delay integration CCD (TDI-CCD) which has high sensitivity and high signal to noise ratio is selected and driving circuit is designed. Two ports of outputs the signal during image capture. The driver circuit generates the time sequence of the CCD and the A/D. The output analog signal of the CCD is sampled by A/D and converted to the digital signal which can be recognized by computer. FPGA is used to driving CCD and A/D, receiving the digital signal after A/D converts, and sending the imaging data to computer. The correlated double sampling (CDS) can decrease some related noise which analog output signal of the TDI-CCD has, and increase the signal to noise ratio. The code of field programmable gate array (FPGA) is simulated on the ISE14.7. The experiment results prove that the driving circuit can generate right sequence that CCD needs.
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ZhangYuanZhen, Sun XiaoBing, Luo DongGen. Design of Driving Circuit of TDI-CCD for Ocean Observation[J]. Journal of Atmospheric and Environmental Optics, 2019, 14(5): 385
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Received: Mar. 21, 2018
Accepted: --
Published Online: Oct. 14, 2019
The Author Email: ZhangYuanZhen (zyzyushi@mail.ustc.edu.cn)