福岛事故中大量的放射性物质被释放到环境中。日本政府、地方政府、当地居民等要求获得直观易懂的辐射剂量率分布和放射性铯累积状况等信息。并且，剂量率会随着放射性物质的衰减、降雨、去污等导致大幅度的变化，所以广域的放射性物质过渡评价日益受到人们关注。但是，测量仪等的固定点监测和车载移动监测对污染程度整体把握和研究防护措施是不够的。论文介绍了日本的无人机核辐射航测在广域辐射剂量率分布监测、放射性铯的扩散抑制等方面的技术应用状况，以期为我国的核安全监测和防护提供参考。%Substantial radioactive substances are released into environment in Fukushima nuclear accident .The Japanese government , local governments , local residents ask for straightforward information such as radiation dose rate distribution , and radioactive cesium accumulation conditions .And dose rate will subject to substantial change by the decay of radioactive substances , rainfall, decontamination , so the radioactive material transition evaluation in wide area is getting more and more attention by people .However , measuring instrument such as fixed point monitoring devices and vehicle -mounted mobile monitoring devices are not enough for grasping the overall pollution levels and deciding on the protective measures .The application of UAV radiation monitoring technology such as the monitoring of radiation dose rate distribution , the inhibition of radioactive cesium spread in wide area in Japan are introduced , in order to provide reference for our country's nuclear safety surveillance and protection .
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