天然环境辐射场监测的特点是,辐照水平低,监测周期长,并受到天气、季节、地貌,海拔高度和磁纬度等因素的影响。对剂量计的要求有:灵敏度高、衰退小、自身照射率低及无向性等。 Natural environment radiation field monitoring is characterized by low levels of radiation and long monitoring cycles, which are affected by such factors as weather, season, topography, altitude and magnetic latitude. The dosimeter requirements are: high sensitivity, low decay, low self-illumination and non-directional and so on.