摘要
对于大气层以下的传统可见光天文导航,存在白天日照强烈而无法观测星体,数据缺乏连续性,可观测恒星数量少,无法实现全天时天文导航等问题。文中设计并探究利用红外探测器焦平面成像技术来取代可见光CCD成像技术的短波红外天文导航方法,分析短波红外波段相对于可见光波段,在大气层内白天观星实现全天时天文导航的优势,并对其可行性进行实验分析。实验结果表明,基于红外探测器的天文导航方法,在太阳辐射较弱的清晨或黄昏等时段,可以成功拍摄到可见光CCD仪器无法观测到的短波红外波段的恒星,对于实现全天时天文导航具有一定的参考意义。夜间短波红外波段的可供观测恒星数量远远多于可见光恒星数量,这对于增加多余观测量,保证连续测量输出,提高天文导航定位定向的精度,具有实际的应用价值。
For traditional visible light celestial navigation below the atmosphere,it is unable to observe stars during the day due to strong sunlight,the data lacks continuity,the number of observable stars is small,and the full-time celestial navigation cannot be realized.This paper designs and explores the short-wave infrared celestial navigation method that uses the infrared detector focal plane imaging technology to replace the visible light CCD imaging technology,and analyzes the advantages of short-wave infrared bands compared to the visible light bands to achieve full-time celestial navigation in the atmosphere during the daytime.And this paper conducts an experimental analysis of its feasibility.Experimental result shows that the celestial navigation method based on infrared detectors can successfully photograph stars in the short-wave infrared band that cannot be observed by visible light CCD instruments in the early morning or dusk when solar radiation is weak.It is useful to realize all-sky celestial navigation,which can provides a reference.At night,the number of observable stars in the short-wave infrared band far exceeds the number of visible stars.This has practical application value for increasing redundant observation,ensuring continuous measurement output,and improving the accuracy of celestial navigation positioning and orientation.
作者
张耿
张超
李崇辉
米科峰
詹银虎
ZHANG Geng;ZHANG Chao;LI Chonghui;MI Kefeng;ZHAN Yinhu(Information Engineering University, Zhengzhou 450001, China;Troops 61363, Xi’an 710054, China)
出处
《测绘工程》
CSCD
2022年第1期58-64,共7页
Engineering of Surveying and Mapping
基金
国家自然科学基金资助项目(41704006,41604011)。
关键词
焦平面成像技术
短波红外探测器
全天时天文导航
昼夜连续测星
focal plane imaging technology
shortwave infrared detector
all-day astronomical navigation
day and night continuous star surveying
