圆锥扫描式机载激光测深系统扫描轨迹建模与分析
发布时间：2019-03-12 12:18
【摘要】：对圆锥扫描式机载激光测深系统在海面上的激光脚点扫描轨迹进行几何建模,重点分析了水文模式下激光脚点扫描轨迹的平均测点密度和覆盖效率。根据设定的几何模型,以CZMIL机载激光测深系统为例,计算得到单航线测量模式下双向扫描区域激光脚点"最小距离"小于1.6 m的比例为99.78%,5 m×5m大小的格网内激光脚点的平均数目为11.93个。另外,对激光测深系统旁向重叠度和两条航线扫描轨迹进行了分析,认为31.3%的旁向重叠度可以保证不产生飞行漏洞,但对激光脚点的测点密度提升效果并不明显。最后,对激光脚点分布的不均匀性进行了分析,讨论了不同的激光测深系统参数对测点密度和测量效率的影响效果。
[Abstract]:In this paper, the geometric modeling of the laser foot scanning trajectory of the conic scanning airborne laser sounding system on the sea surface is carried out, and the average measuring point density and coverage efficiency of the laser foot scanning trajectory in hydrological mode are analyzed emphatically. According to the geometric model, taking the CZMIL airborne laser sounding system as an example, it is calculated that the ratio of the minimum distance of the laser foot in the bi-directional scanning region is 99.78% in the single-route measurement mode, and the minimum distance of the laser foot is less than 1.6m in the two-way scanning region. The average number of laser footers in the grid with the size of 5m 脳 5m is 11.93. In addition, the side overlap degree of laser sounding system and the scanning track of two routes are analyzed. It is concluded that 31.3% side overlap degree can ensure no flight loophole, but the enhancement effect of laser foothold point density is not obvious. Finally, the non-uniformity of laser foot distribution is analyzed, and the effect of different parameters of laser sounding system on the measurement point density and measurement efficiency is discussed.
【作者单位】： 信息工程大学;
【基金】：国家自然科学基金项目(41201392)
【分类号】：P229
本文编号：2438764
[Abstract]:In this paper, the geometric modeling of the laser foot scanning trajectory of the conic scanning airborne laser sounding system on the sea surface is carried out, and the average measuring point density and coverage efficiency of the laser foot scanning trajectory in hydrological mode are analyzed emphatically. According to the geometric model, taking the CZMIL airborne laser sounding system as an example, it is calculated that the ratio of the minimum distance of the laser foot in the bi-directional scanning region is 99.78% in the single-route measurement mode, and the minimum distance of the laser foot is less than 1.6m in the two-way scanning region. The average number of laser footers in the grid with the size of 5m 脳 5m is 11.93. In addition, the side overlap degree of laser sounding system and the scanning track of two routes are analyzed. It is concluded that 31.3% side overlap degree can ensure no flight loophole, but the enhancement effect of laser foothold point density is not obvious. Finally, the non-uniformity of laser foot distribution is analyzed, and the effect of different parameters of laser sounding system on the measurement point density and measurement efficiency is discussed.
【作者单位】： 信息工程大学;
【基金】：国家自然科学基金项目(41201392)
【分类号】：P229
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