Processing Of Fringe Image From Spaceborne Fabry-Perot Interferometer Prototype

While world counties have been paying closer attention to Middle and Upper Atmosphere exploration, Fabry—Perot interferometer(FPI mentioned next in short)is one of the best detector to explore the Middle and Upper Atmosphere wind. A spaceborne FPI prototype with a large diameter telescope was designed and constructed. As a consequence, image of interference fringe was acquired.In the paper, FPI principle and feathers are presented simply; including filtering, segmentation and thinning, methods of auto-processing the interference fringe are interpreted. Filtering is composed of Median Filtering and background compensation. Through selecting the area mean gray scale as threshold for segmentation, binary fringe is obtained. Mathematical morphology is fitting for restoring rupture and burr. Visual C++ is adopted to develop the FPI interference fringe image process software and various filtering, segmentation algorithms are implemented. By comparing the results and analyzing, the methods mentioned above have a better experiment result in practice.As thinning is essential for the accuracy of inverting middle and upper atmosphere wind, thinning is discussed in details. Moreover, thinning algorithms are negotiated, put into practice and compared. The stripe repairs and maintains are also needed and realized. All the auto-process methods mentioned above have a good experiment result in practice.At last, the feasible inversion principle and algorithm are also interpreted here.FPI prototype has been designed and constructed as well as image of interference fringe has been processed, which forms a convenient foundation of our country's exploring Middle and Upper Atmosphere wind by ourselves own.