短波红外白天测星技术研究

Research on SWIR Star Detection Technology in Daytime

当传统的天文导航系统应用于大气层内的载体时,在白天条件下极易受到强天空背景辐射影响而饱和,失去星体探测能力,严重影响了天文导航系统全天时导航能力。指出白天测星的本质是要解决测星灵敏度与动态范围之间的矛盾。引用国外在短波红外白天测星技术上的研究结论,结合目前技术发展水平提出采用较为合适的短波红外探测器。分析了短波红外白天测星技术需要解决的几个关键问题,给出了短波红外白天测星技术应用现状及发展方向。

t When the traditional celestial navigation system is applied to the carrier in the atmosphere, it is very easy to satu- rate influenced by the strong sky background radiation under the condition of the day. So the star detection ability is lost, and it has a serious impact on the navigation ability of the celestial navigation system all day. The key of star detection in daytime is to resolve the contradiction between the sensitivity and the dynamic range of the measurement. Based on the re- search conclusion of SWIR star detection technology in daytime abroad, a suitable SWIR detector is adopted combining the current technology development level. Some key problems in SWlR star detection technology are analyzed. The application status and development direction of the SWIR star detection technology in daytime are given as well.