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In a space project, a digital CCD camera which can image more clearly in the 1 Lux light environment has been asked to design. The CCD sensor ICX285AL produced by SONY Co.Ltd has been used in the CCD camera. The FPGA (Field Programmable Gate Array) chip XQR2V1000 has been used as a timing generator and a signal processor inside the CCD camera. But in the low-light environment, two kinds of random noise become apparent because of the improving of CCD camera's variable gain, one is dark current noise in the image background, the other is vertical transfer noise. The real time method for eliminating noise based on FPGA inside the CCD camera would be introduced.
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