一种基于全天相机组网的区域火流星监测网的实现和应用  

Implementation and Application of a Regional Fireball Monitoring Network Based on All-sky Camera Networking

作　　者：徐智坚 肖焱山[1] 李彬 赵海斌[2,3,4] XU Zhijian;XIAO Yan-shan;LI Bin;ZHAO Hai-bin(College of Science,China Three Gorges University,Yichang 443002;Key Laboratory of Planetary Sciences,Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210023;School of Astronomy and Space Science,University of Science and Technology of China,Hefei 230026;Center for Eacellence in Comparative Planetology,Chinese Academy of Sciences,Hefei 230026)

机构地区：[1]三峡大学理学院,宜昌443002 [2]中国科学院紫金山天文台行星科学重点实验室,南京210023 [3]中国科学技术大学天文与空间科学学院,合肥230026 [4]中国科学院比较行星学卓越创新中心,合肥230026

出　　处：《天文学报》2023年第5期99-114,共16页Acta Astronomica Sinica

基　　金：国家自然科学基金项目(62227901);中国科学院先导B项目(XDB41010104);中国科学院南京地球资源环境大型仪器区域中心实验技术方法创新项目;中国科学院仪器设备功能开发技术创新项目;空间碎片与近地小行星防御科研资助项目(KJSP2020020204、KJSP2020020102);小行星基金会资助。

摘　　要：流星监测网是小尺寸近地小天体撞击监测、判断陨石落点的主要工具.提出了一种基于多站布局的全天视频相机组网监测系统,并在江苏及周边构建了一个区域级原型系统,实现了火流星监测组网控制、视频数据采集、数据处理及流星体定轨的完整流程.通过1yr的实测运行表明,该系统可观测流星极限视星等为-1.0等,可以实现绝对星等-2.5等流星的完备检测;根据监测数据得到火流星通量为2.68×10^(-7)km^(-2)·h^(-1);群流星和偶发流星占比分别为46%和54%,偶发流星中类小行星轨道和类彗星轨道比例分别为27.1%和72.9%.统计结果与国际主要流星监测网相接近,验证了监测网系统在实际组网使用中的监测能力.Fireball monitoring network is the main equipment for monitoring impact from small-size near-Earth objects(NEOs)and determining meteorite fall locations.In this paper,a monitoring system using a multi-station distributed all-sky video camera network is proposed and a regional prototype system has been constructed in Jiangsu and surrounding areas.The main processes of fireball monitoring were implemented,including network control,video capturing,data processing,trajectory determination,and orbit calculation.After running for 1 yr,the results show that the limiting apparent magnitude -1.0 for meteors in the video and the absolute magnitude exhaustive detection regime can reach around -2.5.The flux of fireballs is found to be 2.68×10^(-7)km^(-2)·h^(-1).The percentages of streams and sporadic meteors are 46% and 54%,respectively,and the fraction of cometary orbits equals 72.9%,while for asteroidal-type it is 27.1%.The statistical results are close to those of the international meteor monitoring networks,which verified the monitoring capability of the network system in practical operation.

关 键 词：流星 小行星 天文仪器 方法:数据处理 

分 类 号：P185[天文地球—天文学]