Error correction technology for CCD image using high speed optical fiber transmission

An error correction algorithm for CCD images was proposed to improve the reliability of image optical fiber transmission in a Time Delay Integrated(TDI)CCD camera with a large field of view. First, the image optical fiber transmission characteristics for the space camera and data transmission errors in a fiber channel Additive White Gaussian Noise(AWGN) model were analyzed, and a (16, 8) error correction algorithm was proposed. Then, the (16, 8) algorithm idea and error correction principle were described and an implementation method using Very Large Scale Integration(VLSI) and an encoder were explained. Meanwhile, the feasibility of the algorithm for space camera was explained in different aspects. Finally, the experiments were performed for the transmission system of a prototype in a space multispectral camera. The results show that the (16, 8) algorithm has strong error detecting ability, less resource occupied rate and easier to realize with a hardware. The method is able to correct 191 bit errors in 3 043 Byte, and the resource occupied rate for the encoder is less than 5%. In conclusion, the algorithm improves the reliability of image optical fiber transmission in space cameras.