Study on Point Spread Function of Optical Synthetic Aperture

Optical synthetic aperture has extensive application in the space exploration and earth observation with technology progress in aviation and spaceflight fields. Using a sparse array of smaller apertures, one can synthesize an aperture with the resolution of the equivalent filled aperture while reducing the size and weight of system. The point spread function of optical synthetic aperture has an important influence on optical synthetic aperture imaging. The point spread function under different fill factor and piston errors are given by calculating.