基于红外波段船载星光定向仪白昼恒星探测技术

摘要： 白昼恒星探测技术是船载星光定向仪海上应用的关键技术之一.本文基于实测星图给出白昼恒星探测技术的理论公式和实现方案.该技术针对实测红外星图中的背景噪声、伪星点、坏像素、对灰度背景的适应性问题，分别设计星图滤波算法、多帧伪星点剔除算法、坏像素索引表以及多梯度渐进积分时间调整算法.通过外场观星和组合导航实验验证该技术的有效性和精度.

Daytime Star Detection Algorithm for an Infrared Shipboard Star Sensor

Abstract： Daytime star detection algorithm is one of the critical technologies in ship navigation star sensor. The theoretical derivations and the implementation method of the daytime stellar detection algorithm are given based on star maps. Several practical aspects of the algorithms such as the star map filter, the multi frame processing, the index table of blind pixels and the multi gradient integral time regulation are designed, to resolve the technical problems like the infrared background noise, the pseudo stars, the detector blind pixels and the adaptability of algorithm with grey background accordingly. The algorithm is effectively verified through field star observation and integrated navigation experiment.