针对现有伽玛射线剂量（率）测量仪器检定方法送检距离远、周期长、效率低的不足，中国工程物理研究院核物理与化学研究所采用基于样本仪表的机器预测方法，开展了基于小尺度参考辐射的便携式伽玛剂量（率）仪遂行校准技术研究工作。最终成功地研制了一套辐射防护用伽玛射线剂量（率）仪遂行校准装置，实现了测量标准不确定度不大于5%的良好结果。为伽玛空气比释动能量值的遂行定度提出了一条全新的技术思路，为便携式伽玛剂量（率）仪的现场和野外校准提供了一种全新的示范装备。

The existing calibration methods of gamma ray dose (rate) meters have the disadvantages of long distance, long period and low efficiency. To overcome these disadvantages, the Institute of Nuclear Physics and Chemistry of the Chinese Academy of Engineering Physics applies a machine learning prediction method using sample instruments to carry out a research on field calibration technology for portable gamma dose (rate) meters based on minitype reference radiation. A field calibration device for gamma dose (rate) meters for radiation protection was successfully developed, which achieved a satisfactory result with a measurement standard uncertainty of no more than 5%. This paper also presents a new method for determination of the conventional true value of gamma ray air kerma, and provides a novel model equipment for field calibration of the portable gamma dose (rate) meters.