摘要
无人机在测绘作业中应用越来越广泛,但像控点数量大、高程精度低等问题仍普遍存在。结合新疆某风电场测区生产1∶2000地形图实际作业,对装载机载差分系统前后的2次航测数据进行了测试及检核对比,结果表明:使用机载差分系统后,在满足地形图精度要求的前提下,像控点数量可减少49%,可有效缩短工期和节省项目成本。
UAVs are extensively used in surveying and mapping operations,but problems such as large number of control points and low elevation accuracy still prevail.Combined with the actual production of 1∶2000 topographic map of a wind farm measurement area in Xinjiang,the aerial survey data before and after the mounting of differential system were tested,verified and compared.The results show that after using the airborne differential system,under the premise of meeting accuracy requirements of the topographic map,the number of image control points can be reduced by 49%,which can effectively shorten the survey operation period and save project costs.
作者
张钊
尚海兴
柯生学
马卫昭
ZHANG Zhao;SHANG Haixing;KE Shengxue;MA Weizhao(PowerChina Northwest Engineering Corporation Limited,Xi'an 710065,China)
出处
《西北水电》
2019年第6期55-57,共3页
Northwest Hydropower
关键词
无人机
差分系统
像控点
航空摄影测量
UAV
differential system
image control point
aerial photogrammetry
