The Gamma-Ray Monitor (GRM), which is one of the four main scientific instruments onboard the Space-based multi-band astronomical Variable Objects Monitor (SVOM) satellite, is dedicated to the spectrum measurement and study of Gamma-Ray Bursts (GRBs) in the 15 keV to 5 MeV energy band, as well as to perform real-time triggering and localization of the transient bursts in orbit. In order to fully understand the performance of the developed spectrometer and optimize the calibration scheme for the flight model (FM), several calibration campaigns, such as energy–channel relation and energy resolution, detection efficiency, temperature response, high-voltage effect and the non-uniformity tests of detector crystal, have been implemented during the development phase of the qualification model (QM) of GRM, utilizing radionuclides, hard X-ray beam and synchrotron radiation facility. The data analysis results show good agreement with the expected output by Monte Carlo simulations. The detailed optimization scenario for FM calibration is also presented in this paper.

伽玛射线监测器（GRM）是天基多波段天文可变物体监测器（SVOM）卫星上的四种主要科学仪器之一，致力于伽玛射线暴（GRB）的频谱测量和研究）在15 keV到5 MeV的能带中，以及对轨道上的瞬变脉冲进行实时触发和定位。为了充分了解已开发的光谱仪的性能并优化飞行模型（FM）的校准方案，开展了一些校准活动，例如能量通道关系和能量分辨率，检测效率，温度响应，高压效应以及在GRM鉴定模型（QM）的开发阶段，已经利用放射性核素对检测器晶体进行了非均匀性测试，硬X射线束和同步辐射装置。数据分析结果表明与蒙特卡洛模拟的预期输出吻合良好。本文还介绍了FM校准的详细优化方案。