系统工程与电子技术
繫統工程與電子技術
계통공정여전자기술
SYSTEMS ENGINEERING AND ELECTRONICS
2014年
12期
2417-2425
,共9页
祁晓明%魏瑞轩%沈东%茹常剑%周欢
祁曉明%魏瑞軒%瀋東%茹常劍%週歡
기효명%위서헌%침동%여상검%주환
无人机%协同搜索%贝叶斯准则%转移概率密度%分布式模型预测控制
無人機%協同搜索%貝葉斯準則%轉移概率密度%分佈式模型預測控製
무인궤%협동수색%패협사준칙%전이개솔밀도%분포식모형예측공제
unmanned aerial vehicle (UAV)%cooperative search%Bayesian theory%transition probability density%distributed model prediction control (DMPC)
多无人机(unmanned aerial vehicle,UAV)协同搜索是多UAV协同一个重要研究方向。随着战场环境的复杂化,UAV对动态时敏目标的搜索显得尤为重要。针对动态时敏目标的运动特性,首先建立动态时敏目标的运动预测模型,为了降低由于目标运动造成的不确定性以及优化UAV的搜索性能,在采用贝叶斯理论对目标存在概率进行更新的基础上,研究了一种基于高斯分布的目标转移概率密度,通过计算得到动态时敏目标的存在预测概率,然后合理建立UAV协同搜索的性能指标函数,在分布式模型预测控制框架下,将多UAV集中式在线优化问题转化为各架UAV的分布式在线优化问题,最后对性能指标函数进行优化求解。通过仿真验证了所提方法的有效性。
多無人機(unmanned aerial vehicle,UAV)協同搜索是多UAV協同一箇重要研究方嚮。隨著戰場環境的複雜化,UAV對動態時敏目標的搜索顯得尤為重要。針對動態時敏目標的運動特性,首先建立動態時敏目標的運動預測模型,為瞭降低由于目標運動造成的不確定性以及優化UAV的搜索性能,在採用貝葉斯理論對目標存在概率進行更新的基礎上,研究瞭一種基于高斯分佈的目標轉移概率密度,通過計算得到動態時敏目標的存在預測概率,然後閤理建立UAV協同搜索的性能指標函數,在分佈式模型預測控製框架下,將多UAV集中式在線優化問題轉化為各架UAV的分佈式在線優化問題,最後對性能指標函數進行優化求解。通過倣真驗證瞭所提方法的有效性。
다무인궤(unmanned aerial vehicle,UAV)협동수색시다UAV협동일개중요연구방향。수착전장배경적복잡화,UAV대동태시민목표적수색현득우위중요。침대동태시민목표적운동특성,수선건립동태시민목표적운동예측모형,위료강저유우목표운동조성적불학정성이급우화UAV적수색성능,재채용패협사이론대목표존재개솔진행경신적기출상,연구료일충기우고사분포적목표전이개솔밀도,통과계산득도동태시민목표적존재예측개솔,연후합리건립UAV협동수색적성능지표함수,재분포식모형예측공제광가하,장다UAV집중식재선우화문제전화위각가UAV적분포식재선우화문제,최후대성능지표함수진행우화구해。통과방진험증료소제방법적유효성。
Cooperative search of multi-unmanned aerial vehicle (multi-UAV)is an important research field of multi-UAV cooperative control.With the complication of battlefield environment,it is especially important for UAVs to search for dynamic time-critical targets.For motion characteristics of dynamic time-critical targets, contributing the motion prediction model of dynamic time-critical targets first of all,in order to decrease the un-certainty of targets motion and optimize search performance of UAVs,putting forward a transition probability density of targets based on gauss distributing on the basis of targets existence probability which is updated gby Bayesian theory,and computing existence probability of dynamic time-critical targets,then,contributing char-acteristics index function of UAVs cooperative search with reason,in the frame of distributed model prediction control (DMPC),transforming the centralized on-line optimization problem of multi-UAV to a distributed on-line optimization problem of each UAV,finally,solving the characteristics index function optimally.Simulation results demonstrate the validity of the proposed method.