Application of blind deconvolution algorithm in hypersonic flow field star map restoration

In recent years, the hypersonic aircraft technology is paid more and more attention for its great significance for military application. The guidance, navigation and control technology is one of the key technologies of hypersonic aircraft. And as one of widely used automatic navigation method, which is of such advantages as high navigation accuracy, good anti-interference ability, and auto-navigation ability, the restoration algorithm of star map for hypersonic aircraft was studied in this paper. Considered the aero-optical effects caused by hypersonic flight, the simulation of turbulence-degrade star map was studied, and the increment Wiener filter and the restoration algorithm of iterative blind deconvolution in limitation support region were used for restoration of the turbulence-degraded star map, respectively. The simulation result shows that, the latter method is of higher precision and the restored star map can be identified by the celestial navigation system correctly.