As a high-tech of surveying and mapping industry developed in recent years,quadrotor UAV aerial photog-raphy system can be vertical take-off and landing,spot hover.It has strong flexibility and timeliness,and can still work normally when fixed-wing UAV is restricted by site,weather,air traffic control and so on.According to the application of md4 -1000 quadrotor UAV aerial photography system in “8.03”Ludian earthquake and “3.01”Cangyuan earthquake, a multi-level complementation between quadrotor UAV and fixed-wing UAV can guarantee to acquire high resolution re-mote sensing images or high-definition video in hardest-hit areas at the first time after disaster,and thus greatly improve the ability of emergence surveying and mapping security service in Yunnan.%四旋翼无人机航摄系统作为测绘行业近年发展起来的高新技术，可垂直起降，定点悬停，相比固定翼无人机受到场地、天气、空中管制等限制，四旋翼无人机依然可以正常工作，具有很强的灵活性和时效性。为此，依据 md4－1000四旋翼无人机航摄系统在“8．03”鲁甸地震和“3．01”沧源地震中的应用，将四旋翼无人机和固定翼无人机相结合形成多层次互补，保证灾后第一时间获取重灾区域高分辨率遥感影像或高清视频，大大提高了云南省应急测绘保障服务能力。
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