Fig. 7 Vertical moiré fringe assembly 
Fig. 8 Slope moiré fringe assembly 
Fig. 9 A picture after assembly 
5 CONCLUTIOIN 6 ACKNOWLEDGEMENT 
The assembly technique of CCD is an effective way to 
solve the problem of large view field and high 
resolution of observatory measuring. Based on the 
analysis of present assembly technique of CCD, this 
paper raises a new technique of assembly to overcome 
the shortcoming of current CCD assembly: focal plane 
scanning assembly technique. Similar to the human 
vision, this technique can obtain and process the part of 
a large view field we concerned m real time. And we 
introduce the CCD moiré effect mto appraising the 
assembly accuracy. The experiment results show that 
the position accuracy of the assembly system is lesser 
than 1/20 pixel when we adopt error compensation. 
There still remain many questions to be answered, such 
as the radiation intensity correction at the assembly 
boundary is needed to study deeply. 
The authors thank Natural Science Foundation of China 
and Wuhan Technical University of Surveying and 
Mappmg, which support our research and sponsor our 
attending this workshop. Our works have benefited 
under grants NNSFC 49631050. 
REFERENCES 
1. Lawrence, 1988 Reports of Livermore National 
Laboratory. The Wide Field of View Camera work for 
others. 
2 Shen Mongzuo, 1992, Technique of Line CCD Image 
Sensor Assembly on Optical Focal Plane, Photoelectric 
Engineering. 1991,(2), 18 
3. Ma Wenli, etc 1994 High Accuracy CCD Assembly 
of 10 Chips on Optical Focal Plane, Photoelectric 
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