首页|The In-Flight Realtime Trigger and Localization Software of GECAM

The In-Flight Realtime Trigger and Localization Software of GECAM

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Realtime trigger and localization of bursts are the key functions of GECAM,an all-sky gamma-ray monitor launched on 2020 December 10.We developed a multifunctional trigger and localization software operating in the CPU of the GECAM Electronic Box.This onboard software has the following features:high trigger efficiency for real celestial bursts with a suppression of false triggers caused by charged particle bursts and background fluctuation,dedicated localization algorithm optimized for both short and long bursts,and low time latency of the trigger information which is downlinked through the Global Short Message Communication service of the global BeiDou navigation system.This paper provides a detailed description of the design and development of the trigger and localization software system for GECAM.It covers the general design,workflow,the main functions,and the algorithms used in the system.The paper also includes on-ground trigger tests using simulated gamma-ray bursts generated by a dedicated X-ray tube,as well as an overview of the performance for real celestial bursts during its in-orbit operation.

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Xiao-Yun Zhao、Shao-Lin Xiong、Xiang-Yang Wen、Xin-Qiao Li、Ce Cai、Shuo Xiao、Qi Luo、Wen-Xi Peng、Dong-Ya Guo、Zheng-Hua An、Ke Gong、Jin-Yuan Liao、Yan-Qiu Zhang、Yue Huang、Lu Li、Xing Wen、Fei Zhang、Jing Duan、Chen-Wei Wang、Dong-Li Shi、Peng Zhang、Qi-Bin Yi、Chao-Yang Li、Yan-Bing Xu、Xiao-Hua Liang、Ya-Qing Liu、Da-Li Zhang、Xi-Lei Sun、Fan Zhang、Gang Chen、Huan-Yu Wang、Sheng Yang、Xiao-Jing Liu、Min Gao、Mao-Shun Li、Jin-Zhou Wang、Xing Zhou、Yi Zhao、Wang-Chen Xue、Chao Zheng、Jia-Cong Liu、Xing-Bo Han、Jin-Ling Qi、Jia Huang、Ke-Ke Zhang、Can Chen、Xiong-Tao Yang、Dong-Jie Hou、Yu-Sa Wang、Rui Qiao、Xiang Ma、Xiao-Bo Li、Ping Wang、Xin-Ying Song、Li-Ming Song、Shi-Jie Zheng、Bing Li、Hong-Mei Zhang、Yue Zhu、Wei Chen、Jian-Jian He、Zhen Zhang、Jin Hou、Hong-Jun Wang、Yan-Chao Hao、Xiang-Yu Wang、Zong-Yuan Yang、Zhi-Long Wen、Zhi Chang、Yuan-Yuan Du、Rui Gao、Xiao-Fei Lan、Yan-Guo Li、Gang Li、Xu-Fang Li、Fang-Jun Lu、Hong Lu、Bin Meng、Feng Shi、Hui Wang、Hui-Zhen Wang、Yu-Peng Xu、Jia-Wei Yang、Xue-Juan Yang、Shuang-Nan Zhang、Chao-Yue Zhang、Cheng-Mo Zhang、Zhi-Cheng Tang、Cheng Cheng

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Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

University of Chinese Academy of Sciences,Chinese Academy of Sciences,Beijing 100049,China

School of Information Science and Technology,Southwest Jiaotong University,Chengdu 611756,China

Key Laboratory of Stellar and Interstellar Physics and Department of Physics,Xiangtan University,Xiangtan 411105,China

Physics and Space Science College,China West Normal University,Nanchong 637002,China

Department of Astronomy,Beijing Normal University,Beijing 100875,China

Innovation Academy for Microsatellites of CAS,Shanghai 201203,China

Changchun University of Science and Technology,Changchun 130022,China

Chinese Academy of Sciences South America Center for Astronomy,National Astronomical Observatories,CAS,Beijing 100101,China

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GECAM(Huairou-1)mission is supported by the Strategic Priority Research Program on Space Science of the Chinese Academy of SStrategic Priority Research Program on Space ScienceStrategic Priority Research Program on Space ScienceStrategic Priority Research Program on Space ScienceStrategic Priority Research Program on Space ScienceStrategic Priority Research Program on Space ScienceChinese Academy of Sciences,the National Natural Science Foundation of China(NSFC)BeiDou navigation system

XDA15360300XDA15360000XDA15360102XDA15052700E02212A02S12173038

2024

10.1088/1674-4527/ad683c

天文和天体物理学研究
中国科学院国家天文台

天文和天体物理学研究

CSTPCD
影响因子：0.406
ISSN：1674-4527
年,卷(期)：2024.24(10)