Taking the opportunity of the third monitoring of rocky desertification in the karst area of China,Zigui County of Hubei Province applied Unmanned Aerial Vehicle( UAV) for the first time for monitoring. Through repeat...Taking the opportunity of the third monitoring of rocky desertification in the karst area of China,Zigui County of Hubei Province applied Unmanned Aerial Vehicle( UAV) for the first time for monitoring. Through repeated trials and studies,it established technical requirements including the UAV monitoring technology for the rocky desertification,the feature point photographing,UAV video judgment of rocky desertification degree,UAV video correction misclassification subcompartment,and UAV video observation of rocky desertification control. It completed the third rocky desertification monitoring task of karst area in Zigui County.展开更多
针对传统战场态势认知过程中缺乏对作战区域的有效分析与识别的问题,提出了一种面向作战区域提取的空战场目标轨迹分析方法。首先,基于改进Douglas-Peucker算法对目标原始轨迹进行特征点提取,得到目标特征轨迹,从而降低目标轨迹冗余信息...针对传统战场态势认知过程中缺乏对作战区域的有效分析与识别的问题,提出了一种面向作战区域提取的空战场目标轨迹分析方法。首先,基于改进Douglas-Peucker算法对目标原始轨迹进行特征点提取,得到目标特征轨迹,从而降低目标轨迹冗余信息;其次,利用密度峰值快速搜索聚类算法(Clustering by Fast Search and Find of Density Peaks,CFSFDP)对目标特征轨迹进行聚类分析,得到多个特征点簇,最后,基于Graham凸包算法对每个特征点簇进行扫描,进而得到闭合的多边形来表征作战区域。通过若干案例仿真验证了该算法模型的可行性和有效性。展开更多
编队控制和组网通信是无人机集群保持队形稳定和执行协同任务的前提条件。现有的编队控制算法侧重于队形控制,往往对无人机之间的通信因素考虑较少。针对无人机集群组网编队问题,设计了基于信干噪比(Signal to Interference plus Noise ...编队控制和组网通信是无人机集群保持队形稳定和执行协同任务的前提条件。现有的编队控制算法侧重于队形控制,往往对无人机之间的通信因素考虑较少。针对无人机集群组网编队问题,设计了基于信干噪比(Signal to Interference plus Noise Ratio, SINR)的分布式编队控制算法。该算法兼顾接入覆盖与网络连通性要求,以SINR为参考构建虚拟作用力,能够使无人机以分布式控制的方式自主移动到通信质量更优的位置并维持稳定的拓扑结构。仿真结果表明,该算法可以适用于不同场景,能够在保证网络连通稳定的前提下优化目标区域用户的通信质量,并且具有较高的接入覆盖率和编队稳定性。展开更多
文摘Taking the opportunity of the third monitoring of rocky desertification in the karst area of China,Zigui County of Hubei Province applied Unmanned Aerial Vehicle( UAV) for the first time for monitoring. Through repeated trials and studies,it established technical requirements including the UAV monitoring technology for the rocky desertification,the feature point photographing,UAV video judgment of rocky desertification degree,UAV video correction misclassification subcompartment,and UAV video observation of rocky desertification control. It completed the third rocky desertification monitoring task of karst area in Zigui County.
文摘针对传统战场态势认知过程中缺乏对作战区域的有效分析与识别的问题,提出了一种面向作战区域提取的空战场目标轨迹分析方法。首先,基于改进Douglas-Peucker算法对目标原始轨迹进行特征点提取,得到目标特征轨迹,从而降低目标轨迹冗余信息;其次,利用密度峰值快速搜索聚类算法(Clustering by Fast Search and Find of Density Peaks,CFSFDP)对目标特征轨迹进行聚类分析,得到多个特征点簇,最后,基于Graham凸包算法对每个特征点簇进行扫描,进而得到闭合的多边形来表征作战区域。通过若干案例仿真验证了该算法模型的可行性和有效性。
文摘编队控制和组网通信是无人机集群保持队形稳定和执行协同任务的前提条件。现有的编队控制算法侧重于队形控制,往往对无人机之间的通信因素考虑较少。针对无人机集群组网编队问题,设计了基于信干噪比(Signal to Interference plus Noise Ratio, SINR)的分布式编队控制算法。该算法兼顾接入覆盖与网络连通性要求,以SINR为参考构建虚拟作用力,能够使无人机以分布式控制的方式自主移动到通信质量更优的位置并维持稳定的拓扑结构。仿真结果表明,该算法可以适用于不同场景,能够在保证网络连通稳定的前提下优化目标区域用户的通信质量,并且具有较高的接入覆盖率和编队稳定性。