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养好砂石路面的几点看法
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作者 何建明 《广西交通科技》 1996年第3期8-9,共2页
砂石路面养护要做到勤防、勤治、勤巡视。应根据材料、季节、路段情况,采用不同的养护方法。
关键词 砂石路面 养护 季节 路面材料 路段线型 操作规程
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An optimization model of UAV route planning for road segment surveillance 被引量:1
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作者 刘晓锋 关志伟 +1 位作者 宋裕庆 陈大山 《Journal of Central South University》 SCIE EI CAS 2014年第6期2501-2510,共10页
Unmanned aerial vehicle(UAV)was introduced to take road segment traffic surveillance.Considering the limited UAV maximum flight distance,UAV route planning problem was studied.First,a multi-objective optimization mode... Unmanned aerial vehicle(UAV)was introduced to take road segment traffic surveillance.Considering the limited UAV maximum flight distance,UAV route planning problem was studied.First,a multi-objective optimization model of planning UAV route for road segment surveillance was proposed,which aimed to minimize UAV cruise distance and minimize the number of UAVs used.Then,an evolutionary algorithm based on Pareto optimality technique was proposed to solve multi-objective UAV route planning problem.At last,a UAV flight experiment was conducted to test UAV route planning effect,and a case with three scenarios was studied to analyze the impact of different road segment lengths on UAV route planning.The case results show that the optimized cruise distance and the number of UAVs used decrease by an average of 38.43% and 33.33%,respectively.Additionally,shortening or extending the length of road segments has different impacts on UAV route planning. 展开更多
关键词 unmanned aerial vehicle traffic surveillance route planning multi-objective optimization evolutionary algorithm
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