Optical Aperture Synthesis Array Optimization Study

Optical aperture synthesis imaging technology is one of optical imaging technology methods for high observation resolution. It brings the high astronomical observation resolution and research into reality. The optimum configuration of the sub-aperture array is the key of optical aperture synthesis imaging technology. This paper mostly studies the optimum configuration of the sub-aperture array. This paper summarizes the development of optical aperture synthesis imaging technology in the world .The basic theory of optical aperture synthesis imaging is discussed and the technology of the optical closure phase method, the u-v coverage method and image reconstruction are introduced .And the theory of sub-aperture array is also expounded. This paper emphatically discusses the optimum configuration of the sub-aperture array, and an optimum scheme is proposed. The optimum configuration with the least lacked components and the non-lacked components for the linear array with apertures less than 9. This paper also discussed the optimum of planar arrays. To verify the performance of the proposed configuration of sub-aperture array, this paper adopts a new appraisement method named frequency sampling. The interferogram and interference spectrum are obtained through the computer simulation of the linear arrays with apertures 4. And the performance of the linear arrays is analyzed quantitatively by comparing the entropy of interferogram. With the analysis of two aperture interference experiment results, the radius of aperture is confirmed .Then the four aperture interference is experimented. The experimented results show that the optimum array and the optimum processes are effective.