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在一种数字表面模型(DSM)建模方法的基础上,对威胁飞行器低空飞行安全的独立障碍物的尺度与DSM纵横断面采样间距的关系进行了分析,给出了独立障碍物的定义、分类和确定独立障碍物的方法。通过对7.2km2一典型城市地域的仿真试验表明,DSM纵横断面间距在3～25m之间,威胁飞行器地形跟踪制导安全的孤立障碍物较少,同时装订并实时处理的DSM模型数据量也较小,并在纵横断面间距12.5m处达到两者最优。
Based on a digital surface model (DSM) modeling method, the relationship between the scale of independent obstacles that threaten the flight safety of aircraft and the sampling interval of longitudinal and cross sections of DSM is analyzed. The definition, classification of independent obstacles And ways of identifying independent obstacles. The simulation test of a typical 7.2km2 urban area shows that the longitudinal and transverse cross-sectional spacings of DSM are between 3 and 25m, and there are fewer isolated obstacles threatening the terrain following guidance of the aircraft, and the data amount of the bound and real-time DSM model is also small , And in the vertical and horizontal cross-sectional spacing of 12.5m to achieve the best of both.