Article(id=1277328337559228444, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1277328335906669390, articleNumber=1003-3033(2026)05-0122-09, orderNo=null, doi=10.16265/j.cnki.issn1003-3033.2026.05.1015, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1765296000000, receivedDateStr=2025-12-10, revisedDate=1773244800000, revisedDateStr=2026-03-12, acceptedDate=null, acceptedDateStr=null, onlineDate=1782468407286, onlineDateStr=2026-06-26, pubDate=1779897600000, pubDateStr=2026-05-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1782468407286, onlineIssueDateStr=2026-06-26, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1782468407286, creator=13701087609, updateTime=1782468407286, updator=13701087609, issue=Issue{id=1277328335906669390, tenantId=1146029695717560320, journalId=1146031787341344770, year='2026', volume='36', issue='5', pageStart='1', pageEnd='318', issueExtLink='null', onlineDate='null', pubDate='1779897600000', pubDateStr='2026-05-28', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1782468406892, creator='13701087609', updateTime=1782867658151, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1279002917143286724, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1277328335906669390, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1279002917143286725, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1277328335906669390, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=122, endPage=130, ext={EN=ArticleExt(id=1277328338247094302, articleId=1277328337559228444, tenantId=1146029695717560320, journalId=1146031787341344770, language=EN, title=Conflict resolution for UAVs in head-on flight scenario based on improved sparrow search algorithm, columnId=1277328337617941059, journalTitle=China Safety Science Journal, columnName=Safety Technology and Engineering, runingTitle=null, highlight=null, articleAbstract=

Focusing on the path planning problem for the resolution of high-risk head-on flight conflicts, a UAV resolution path model based on minimum energy consumption was proposed. Multiple factors, such as paths and turns, obstacles, and safety separation, were comprehensively considered in this model. In the model solution, an improved SSA with multi-strategy integration was proposed by improving the chaotic mapping, the golden sine and the follower position update strategy. Its effectiveness was demonstrated by comparing it against 3 other mainstream swarm-intelligence algorithms on 8 standard benchmark functions. For the issue of flight conflict resolution, multi-aircraft conflict scenarios and reduced conflict scenarios were constructed, and 4 algorithms were applied for multiple trials. The comparison was made from two aspects: convergence performance and running time. Simulation results show that, in 4-UAV head-on conflicts scenario, a fitness of 8.86 with a runtime of 4.06 s are achieved by the improved algorithm, while a fitness of 1.26 and a runtime of 3.03 s are obtained in the 3-UAV induced-conflict scenario. All results are optimal, indicating that reasonable resolution paths for head-on conflicts among multiple UAVs can be rapidly provided by the proposed approach. When dealing with complex conflict problems, both computational efficiency and accuracy are taken into account. The new algorithm can quickly plan paths for the resolution of multi-machine head on flight conflicts.

, authors=Jian Zhang1, 2, Yongbo Zhang1, Yifei Zhao1, **, Fei Lu1, Jingnan Fang1, authorsList=Jian Zhang, Yongbo Zhang, Yifei Zhao, Fei Lu, Jingnan Fang, authorCompany=null, correspAuthors=Yifei Zhao, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1277328342135214140, articleId=1277328337559228444, tenantId=1146029695717560320, journalId=1146031787341344770, language=CN, title=改进麻雀搜索算法下无人机逆向飞行冲突解脱研究, columnId=1277328337940902469, journalTitle=中国安全科学学报, columnName=安全技术与工程, runingTitle=null, highlight=null, articleAbstract=

为解决高风险逆向飞行冲突下解脱路径规划问题,综合考虑路径和转角、障碍物、安全间隔等多要素,构建基于最低能耗的无人机(UAV)解脱路径模型。通过改进混沌映射、黄金正弦策略以及跟随者位置更新策略,提出多策略融合的改进麻雀搜索算法;基于8个标准测试函数,将新算法与其他3种群智能算法进行运算比较,证明新算法的有效性;针对飞行冲突解脱问题,构造多机冲突场景和级联冲突场景,并运用4种算法进行多次试验,从收敛性能和运行时间2方面比对。结果表明:改进算法在4机逆向飞行冲突场景下的适应度和用时分别为8.86、4.06 s,在3机级联冲突场景下的适应度和用时分别为1.26、3.03 s,均为最优值。研究成果在解决复杂冲突问题中,兼顾计算效率与精度,可为多机逆向飞行冲突解脱快速规划路径。

, authors=张健1, 2, 张永波1, 赵嶷飞1, **, 卢飞1, 方静楠1, authorsList=张健, 张永波, 赵嶷飞, 卢飞, 方静楠, authorCompany=null, correspAuthors=赵嶷飞, authorNote=

张 健 (1982—),男,河北廊坊人,博士,副教授,主要从事空中交通管理、无人运行安全评估研究。E-mail:

卢飞 副教授。

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** 赵嶷飞(1971—),男,湖南常德人,博士,教授,主要从事空中交通管理、空域融合运行安全与效率研究。E-mail:
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Simulation parameter

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参数 数值 参数 数值
最大转弯角/(°) 60 距离惩罚系数 105
无人机步长/m 2 间隔惩罚系数 105
安全间隔/m 20 解脱速度/(m/s) 2
无人机1起点 (0, 0) 无人机1终点 (0, 100)
无人机2起点 (0, 100) 无人机2终点 (0, 0)
无人机3起点 (-50, 50) 无人机3终点 (50, 50)
无人机4起点 (50, 50) 无人机4终点 (-50, 50)
无人机5起点 (-40, 100) 无人机5终点 (-40, 0)
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仿真参数

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参数 数值 参数 数值
最大转弯角/(°) 60 距离惩罚系数 105
无人机步长/m 2 间隔惩罚系数 105
安全间隔/m 20 解脱速度/(m/s) 2
无人机1起点 (0, 0) 无人机1终点 (0, 100)
无人机2起点 (0, 100) 无人机2终点 (0, 0)
无人机3起点 (-50, 50) 无人机3终点 (50, 50)
无人机4起点 (50, 50) 无人机4终点 (-50, 50)
无人机5起点 (-40, 100) 无人机5终点 (-40, 0)
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改进麻雀搜索算法下无人机逆向飞行冲突解脱研究
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张健 1, 2 , 张永波 1 , 赵嶷飞 1, ** , 卢飞 1 , 方静楠 1
中国安全科学学报 | 安全技术与工程 2026,36(5): 122-130
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中国安全科学学报 |安全技术与工程 2026 , 36 (5) : 122 -130
改进麻雀搜索算法下无人机逆向飞行冲突解脱研究
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2 中国民航大学 科技创新研究院, 天津 300300, bio={"img":"uDrVqrKxJXOAjSKyXPZQVQ==","content":"

张 健 (1982—),男,河北廊坊人,博士,副教授,主要从事空中交通管理、无人运行安全评估研究。E-mail:

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张健1, 2 , 张永波1, 赵嶷飞1, ** , 卢飞1, 方静楠1
作者信息
  • 1 中国民航大学 空中交通管理学院, 天津 300300
  • 2 中国民航大学 科技创新研究院, 天津 300300
通讯作者:
** 赵嶷飞(1971—),男,湖南常德人,博士,教授,主要从事空中交通管理、空域融合运行安全与效率研究。E-mail:
作者简介:

张 健 (1982—),男,河北廊坊人,博士,副教授,主要从事空中交通管理、无人运行安全评估研究。E-mail:

卢飞 副教授。

Conflict resolution for UAVs in head-on flight scenario based on improved sparrow search algorithm
Jian Zhang1, 2 , Yongbo Zhang1, Yifei Zhao1, ** , Fei Lu1, Jingnan Fang1
Affiliations
  • 1 School of Air Traffic Management, Civil Aviation University of China, Tianjin 300300
  • 2 Institute of Science and Technology Innovation, Civil Aviation University of China, Tianjin 300300
出版时间: 2026-05-28 doi: 10.16265/j.cnki.issn1003-3033.2026.05.1015
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为解决高风险逆向飞行冲突下解脱路径规划问题,综合考虑路径和转角、障碍物、安全间隔等多要素,构建基于最低能耗的无人机(UAV)解脱路径模型。通过改进混沌映射、黄金正弦策略以及跟随者位置更新策略,提出多策略融合的改进麻雀搜索算法;基于8个标准测试函数,将新算法与其他3种群智能算法进行运算比较,证明新算法的有效性;针对飞行冲突解脱问题,构造多机冲突场景和级联冲突场景,并运用4种算法进行多次试验,从收敛性能和运行时间2方面比对。结果表明:改进算法在4机逆向飞行冲突场景下的适应度和用时分别为8.86、4.06 s,在3机级联冲突场景下的适应度和用时分别为1.26、3.03 s,均为最优值。研究成果在解决复杂冲突问题中,兼顾计算效率与精度,可为多机逆向飞行冲突解脱快速规划路径。

麻雀搜索算法(SSA)  /  无人机(UAV)  /  逆向飞行冲突  /  冲突解脱  /  路径规划

Focusing on the path planning problem for the resolution of high-risk head-on flight conflicts, a UAV resolution path model based on minimum energy consumption was proposed. Multiple factors, such as paths and turns, obstacles, and safety separation, were comprehensively considered in this model. In the model solution, an improved SSA with multi-strategy integration was proposed by improving the chaotic mapping, the golden sine and the follower position update strategy. Its effectiveness was demonstrated by comparing it against 3 other mainstream swarm-intelligence algorithms on 8 standard benchmark functions. For the issue of flight conflict resolution, multi-aircraft conflict scenarios and reduced conflict scenarios were constructed, and 4 algorithms were applied for multiple trials. The comparison was made from two aspects: convergence performance and running time. Simulation results show that, in 4-UAV head-on conflicts scenario, a fitness of 8.86 with a runtime of 4.06 s are achieved by the improved algorithm, while a fitness of 1.26 and a runtime of 3.03 s are obtained in the 3-UAV induced-conflict scenario. All results are optimal, indicating that reasonable resolution paths for head-on conflicts among multiple UAVs can be rapidly provided by the proposed approach. When dealing with complex conflict problems, both computational efficiency and accuracy are taken into account. The new algorithm can quickly plan paths for the resolution of multi-machine head on flight conflicts.

sparrow search algorithm(SSA)  /  unmanned aerial vehicles(UAV)  /  head-on flight conflicts  /  conflict resolution  /  path planning
张健, 张永波, 赵嶷飞, 卢飞, 方静楠. 改进麻雀搜索算法下无人机逆向飞行冲突解脱研究. 中国安全科学学报, 2026 , 36 (5) : 122 -130 . DOI: 10.16265/j.cnki.issn1003-3033.2026.05.1015
Jian Zhang, Yongbo Zhang, Yifei Zhao, Fei Lu, Jingnan Fang. Conflict resolution for UAVs in head-on flight scenario based on improved sparrow search algorithm[J]. China Safety Science Journal, 2026 , 36 (5) : 122 -130 . DOI: 10.16265/j.cnki.issn1003-3033.2026.05.1015
随着无人机(Unmanned Aerial Vehicles,UAV)技术的快速发展,无人机运行数量呈指数级增长。然而,这种迅猛发展也带来低空飞行的巨大风险,确保无人机在有限空域中保障多机协同的飞行安全与效率,成为低空交通管理中的关键研究课题。由于无人机在任务执行过程中机动灵活,但避撞能力薄弱,高密度运行下若缺乏自主解脱能力,极易触发飞行冲突。
当前,面向飞行冲突的解脱研究主要分为2类:基于传统算法的方法和基于群智能优化算法的方法。在传统算法方法方面,Jenie等[1]应用三维速度障碍法研究了无人机在非协作环境中的自主避撞。Cai Junling等[2]构建了混合整数非线性规划模型,通过调整速度或高度实现冲突解脱。Eulalia等[3]提出一种考虑风速不确定性的航空器冲突探测和解脱方法。岳仁田等[4]提出一种基于几何关系的无人机低空飞行冲突探测与解脱策略。
群智能优化算法因其全局搜索能力强、鲁棒性好,近年来被越来越多的学者用于航空器冲突解脱路径的优化研究。岳仁田等[5]利用智能算法预测航迹,基于速度障碍法生成解脱策略。钱晓鹏等[6]使用智能体技术结合改进遗传算法优化了冲突解脱路径。谢华等[7]针对城市低空复杂环境中的无人机飞行安全问题,提出一种基于冲突风险地图的三维路径规划方法。孙淑光等[8]结合最接近点时间和相对距离的算法,提出一种基于遗传算法的无人机冲突检测与避撞策略。Chen Yutong等[9]引入一种基于概率的网格占用模型,解决了快速无冲突路径重新规划问题。赵嶷飞等[10]在基于改进智能算法构建路径规划模型中,考虑了城市风场对路径的影响。综上可知:传统算法研究基于2机几何关系进行冲突预测并给出避撞策略,然而,解脱过程仅面向冲突本身,没有一体化考虑解脱后无人机归航和路径规划,现实适用范围窄;已有群智能算法解脱对象多为两两航空器冲突的路径规划,未充分考虑解脱过程中诱发的级联冲突解脱问题,且解脱过程没有考虑所需安全间隔。
鉴于此,笔者拟综合考虑路径和转角、障碍物、安全间隔等要素,构建基于最低能耗的无人机解脱路径模型,通过改进混沌映射、黄金正弦策略和跟随者位置更新策略,提出多策略融合的优化算法,以期为多机逆向飞行冲突快速提供解脱路径,实现高安全、高效率、高容量的低空空域资源配置方案。
结合实际飞行,综合考虑路径长度、转角大小、障碍物约束和安全间隔约束等要素,构建无人机逆向飞行冲突下解脱路径规划模型。其中,障碍物和安全间隔约束以惩罚函数形式计入总目标。
基于路径长度、转角大小构建路径和转角能耗函数,并借鉴刘喆[11]提出的无人机能耗与路径长度和转角大小的关系函数,构建逆向飞行能耗模型。
$ f_{1}=1000 \sum_{i=1}^{N}\left(E_{1}+E_{2}\right)$
$ E_{1}=\lambda_{1} l_{i}-\lambda_{2}$
$ E_{2}=\lambda_{3} \exp \left(\lambda_{4} \alpha\right)$
式中:f1为路径和转角能耗,kWh;E1为路径长度能耗,kWh;E2为转角大小能耗,kWh;N为相邻航路点构成的航段总数;li为第i个航路点到第i+1个航路点的距离,m;λ1为路径长度能耗系数,kWh/m,取5.968×10-5;λ2为路径长度能耗修正系数,kWh,取3.841×10-5;λ3为转角能耗系数,kWh,取1.461×10-5;λ4为转角能耗修正系数,(°)-1,取0.0323;α为无人机转角,(°)。实际飞行中无人机受到转角性能局限,不能超过最大转弯角。
由于实际无人机飞行高度大多在120 m以下,该空域内存在较多形状不一的障碍物,如高楼、信号塔、树木等。为保证运行安全,无人机运行需要与这些障碍物保持安全裕度s。从水平维度将障碍物建模为等效圆,障碍物建模如图1所示。
障碍物能耗f2计算方式如下:
$ d_{i}=\sqrt{\left(x_{i}-x_{o}\right)^{2}+\left(y_{i}-y_{o}\right)^{2}}$
式中:di为无人机i距离障碍物o几何中心的距离,m;xi,yi为无人机坐标;xo,yo为障碍物o几何中心坐标。
$ f_{2}=\left\{\begin{array}{c}0, d_{i} \geqslant r_{o}+s \\\sigma_{o}, d_{i}<r_{o}+s\end{array}\right.$
式中:f2为障碍物能耗代价,kWh;σo为障碍物距离惩罚系数;ro为障碍物等效圆半径,m;s为安全裕度,取5 m。
除了需要保持与障碍物距离,无人机相互之间间隔ui也必须始终大于等于安全间隔,即满足以下要求:
$ u_{i_{j}}=\sqrt{\left(x_{i}-x_{j}\right)^{2}+\left(y_{i}-y_{j}\right)^{2}}$
$ u_{i_{j}} \geqslant d_{\mathrm{m}}+2 r$
式中:uij为无人机i,j相互之间间隔,m;xi,xj,yi,yj分别为任意2架无人机i,j同一时刻的坐标;dm为无人机安全间隔,m;r为无人机半径,m。在安全间隔选取上,可基于前期研究[12]成果。此外,因冲突解脱造成与第3架无人机的距离小于安全间隔,也会引发违反安全间隔的惩罚函数。
$ f_{3}=\left\{\begin{array}{c}0, u_{i} \geqslant d_{\mathrm{m}} \\\sigma_{u}, u_{i}<d_{\mathrm{m}}\end{array}\right.$
式中:f3为安全间隔能耗代价,kWh;σu为无人机间隔惩罚系数。
综合4种因素,最终得到总体目标函数F,表达式如下:
$ \min F=\rho_{1} \sum_{i=1}^{n} f_{1}+\rho_{2} \sum_{i=0}^{\tau_{o}} f_{2}+\rho_{3} \sum_{i=0}^{\tau_{u}} f_{3}$
$ \rho_{1}+\rho_{2}+\rho_{3}=1$
式中:n为无人机架数;τo为飞行过程中无人机不满足障碍物安全裕度的次数;τu为任意2架无人机违反安全间隔次数;ρ1、ρ2、ρ3分别为各函数权重。
为确保权重分配的科学性与合理性,采用层次分析法对路径和转角能耗、障碍物能耗与安全间隔能耗进行两两比较与判断。ρ1、ρ2、ρ3计算结果分别为0.1,0.25,0.65,CR=CI/RI=0.037,其中,CR为一致性比率(Consistency Ratio,CR),CI为一致性指标(Consistency Index,CI),RI为随机一致性指标(Random Index,RI)。CR<0.1,通过一致性检验。该结果表明:模型能够突出安全优先的原则。
传统麻雀搜索算法[13](Sparrow Search Algorithm,SSA)是一种群智能优化算法,通过设置发现者、跟随者和警戒者,模拟麻雀觅食过程,探索优化问题的最优解。SSA算法中有发现者、跟随者以及警戒者。发现者是群体里能量最高的群体,用于寻找食物,为跟随者提供觅食方向,而警戒者是种群内意识到危险的群体,三者分别按照各自规则进行位置更新。
发现者的位置更新规则如下:
$ X_{s_{i}, s_{j}}^{t+1}=\left\{\begin{array}{ll}X_{s_{i}, s_{j}}^{t} \times \exp \left(\frac{-s_{i}}{\xi \times M}\right), & R_{1}<S_{\mathrm{T}} \\X_{s_{i}, s_{j}}^{t}+q \times \boldsymbol{L}, & R_{1} \geqslant S_{\mathrm{T}}\end{array}\right.$
式中:t为当前代数;${X}_{{s}_{i},{s}_{j}}^{t+1}$为在t+1代第si只麻雀的适应值;M为最大迭代数;$\xi \in \left(\mathrm{0,1}\right)$为随机数;R1为警戒值;ST为种群安全阈值;q为服从正态分布的随机数;L为一个一行多维的矩阵,且元素均为1。
跟随者的位置更新规则如下:
$ X_{s_{i}, s_{j}}^{t+1}=\left\{\begin{array}{cc}q \times \exp \left(\frac{X_{\mathrm{w}}^{t}-X_{s_{i}, s_{j}}^{t}}{s_{i}^{2}}\right), & s_{i}>\frac{N_{\mathrm{s}}}{2} \\X_{\mathrm{p}}^{t}+\left|X_{s_{i}, s_{j}}^{t}-X_{\mathrm{p}}^{t}\right| \times \boldsymbol{A}^{+} \times \boldsymbol{L}, & s_{i} \leqslant \frac{N_{\mathrm{s}}}{2}\end{array}\right.$
式中:Xtp为被发现者占据的最佳位置;Xtw为当前最差位置;Ns为种群个数;A为各元素为1或-1的一行多维矩阵,$ \boldsymbol{A}^{+}=\boldsymbol{A}^{\mathrm{T}}\left(\boldsymbol{A} \boldsymbol{A}^{\mathrm{T}}\right)^{-1}$
警戒者的位置更新规则如下:
$ X_{s_{i}, s_{j}}^{t+1}=\left\{\begin{array}{ll}X_{\mathrm{b}}^{t}+\eta \times\left|X_{s_{i}, s_{j}}^{t}-X_{\mathrm{b}}^{t}\right|, & f_{s_{i}}>f_{\mathrm{g}} \\X_{s_{i}, s_{j}}^{t}+K \times\left(\frac{\left|X_{s_{i}, s_{j}}^{t}-X_{\mathrm{w}}^{t}\right|}{\left(f_{s_{i}}-f_{\mathrm{w}}\right)+\varepsilon}\right), & f_{s_{i}} \leqslant f_{\mathrm{g}}\end{array}\right.$
式中:Xtb为当前全局最佳位置;η为步长控制参数,服从正态分布;$K\in \left(\mathrm{0,1}\right)$为随机数;fsi为当前麻雀的适应度;fgfw为当前全局最佳适应度和最差适应度;ε为常数,避免分母为0。
由于SSA算法在处理复杂问题时,常出现收敛缓慢和局部最优等问题,通过改进初始化种群、改进搜索者规则、改进跟随者规则,提升算法的全局搜索能力与局部收敛速度。
由于SSA产生的个体是随机生成的,容易导致初始种群分布不均,无法覆盖整个解空间,而采用混沌映射可以使初始化种群较为均匀的覆盖整个解空间。考虑到智能优化算法对于计算效率的要求[14],采用Circle映射方法构建原始表达式:
$ x_{\varphi+1}=\bmod \left(x_{\varphi}+0.2-\frac{0.5}{2 \pi} \sin \left(2 \pi x_{\varphi}\right), 1\right)$
式中ϕ为解维度,为直观展示Circle映射,最大取值1 000。
图2为原始Circle映射的解维度分布,图3为混沌值频率分布。可见:Circle映射虽能覆盖整个解空间,但混沌值主要集中于[0.2,0.5]区间,频率极差达0.02,仍存在分布不均的问题。
为更好地探索解空间,改进原始表达式,如下:
$ x_{\varphi+1}=\bmod \left(x_{\varphi}+0.83-\frac{0.17}{4 \pi} \sin \left(4 \pi x_{\varphi}\right), 1\right)$
改进后的Circle映射分布的解维度分布情况和各混沌值频率分别如图4图5所示。相较于原始Circle混沌映射分布,改进后的Circle混沌映射混沌值分布更加均匀,频率极差为0.006,混沌值分布不均的问题得到改善。因此,采用改进的Circle混沌映射初始化种群,有利于探索整个解空间。
针对SSA在搜索后期由于种群中的个体都逐渐逼近最优个体,群体多样性下降,容易陷入局部最优,采用黄金正弦策略[15]改进发现者群体更新规则。黄金正弦策略基于正弦函数与单位圆的几何关系,利用黄金分割系数遍历单位圆,使得每次迭代在逐步缩小搜索范围的同时,能够充分探索最优解区域。通过引入黄金正弦策略,确定发现者的位置更新规则为:
$ X_{s_{i}, s_{j}}^{t+1}=\left\{\begin{array}{ll}X_{s_{i}, s_{j}}^{t} \times\left|\sin \left(r_{1}\right)\right|+r_{2} \times \sin \left(r_{1}\right) \times & \\\quad\left|g_{1} X_{\mathrm{b}}^{t}-g_{2} X_{s_{i}, s_{j}}^{t}\right|, & R_{1}<S_{\mathrm{T}} \\X_{s_{i}, s_{j}}^{t}+q \times \boldsymbol{L}, & R_{1} \geqslant S_{\mathrm{T}}\end{array}\right.$
式中:r1为[0,2π]范围内的随机数;r2为[0,π]范围内的随机数;g1g2为黄金分割系数,其表达式为:
$ \left\{\begin{array}{l}g_{1}=a \rho+b(1-\rho) \\g_{2}=a(1-\rho)+b \rho\end{array}\right.$
式中:ρ为黄金分割数,值为$(\sqrt{5}-1)/2$;ab分别为-π和π。
Levy飞行[16]是一种随机游走方式,其步长的概率分布为重尾分布。Levy飞行包括长时间进行小步长游走,偶尔出现大步长2种游走方式,这种游走方式被称为“飞行”。将Levy飞行引入跟随者的位置更新公式,可保证在小步长时能够帮助算法进行局域搜索,大步长时能够扰动种群位置,提高算法跳出局部最优的能力,拥有更好的全局搜索能力。Levy飞行公式表述如下:
$ s=\frac{u}{|v|^{\frac{1}{\beta}}}$
式中uv为服从正态分布的变量,即$u~N(0,{\sigma }_{u}^{2}),v~N(0,{\sigma }_{v}^{2}),{\sigma }_{u}$σv定义为:
$ \left\{\begin{array}{l}\sigma_{u}=\frac{\Gamma(1+\beta) \sin (\pi \beta / 2)}{2^{(\beta-1) / 2} \Gamma[(1+\beta) / 2] \beta} \\\sigma_{v}=1\end{array}\right.$
式中:Γ为标准伽马函数;β为Levy概率分布的指数参数,取1.5。
为验证改进算法的性能,将多策略融合的改进麻雀搜索算法(Multi-strategy Sparrow Search Algorithm,MSSA)与遗传算法(Genetic Algorithm,GA),粒子群算法(Particle Swarm Optimization, PSO),SSA在基准测试函数上进行比较,它们种群数均设为30,最大迭代次数均为200次,独立运行30次,分别统计各算法的最优值、平均值和标准差 3项指标,综合衡量算法的寻优能力。
试验硬件环境为Windows 11 (64bit),处理器为AMD Ryzen 5 5500U,仿真平台为Matlab R2024a。选取的8个标准测试函数中,前2个为单峰测试函数,中间3个为多峰测试函数,最后3个为固定维度多峰测试函数。
在单峰测试函数中,MSSA表现出显著的收敛优势,其最优值和平均值均接近理论最优值,且标准差较小,说明MSSA在优化稳定性和精确性上占据优势。相比之下,SSA也表现优异,但略逊于MSSA,而PSO和GA的结果则差距明显。
在多峰测试函数中,MSSA继续展现了强大的全局探索能力。在所有测试中,MSSA的最优值均优于其他算法,并且其平均值也远低于PSO和GA,体现出在复杂搜索空间中避免局部最优的能力。SSA的表现与MSSA相近,但在部分函数上的稳定性略差。而PSO和GA表现较为一般。
对于固定维度多峰测试函数,MSSA无论是最优值还是平均值,MSSA均能达到或接近理论最优。SSA在这类测试中的表现也很出色,接近MSSA,但略显不足。而PSO和GA则表现出一定劣势,尤其是在复杂问题上,收敛结果不如MSSA和SSA理想。
整体来看,MSSA在所有测试中表现均较为出色,能够更好地平衡收敛速度与全局探索能力,且稳定性高,适合处理各类复杂的优化问题。
分析逆向飞行冲突问题,设定一个无人机集群,飞行监控平台通过实时汇总并分析各无人机的速度、位置和航向等信息。当系统检测到存在潜在冲突时,向冲突无人机下达改航指令,动态修正飞行路径,实现有效的冲突规避。
需要指出的是,为提升解脱效率,将解脱过程离散化,并设定每步解脱步长均为2m,即确保冲突无人机保持相同速度解脱。此外,考虑到实际转角限制,航向的调整可以在当前无人机前进方向上,每个步长实现角度集合中的特定选项(右转60°、右转30°、不调整、左转30°、左转60°),因此解脱策略面向旋翼式无人机。图6为冲突解脱运行示意图。
在实际无人机飞行任务中,路径连续性和平滑性对飞行控制的稳定性和执行效率具有重要影响。然而,所生成的路径由一系列离散轨迹点组成,若直接用于控制系统,容易导致路径不连贯、转向突变等问题。为此,提出一种基于自适应权重非均匀有理B样条曲线路径平滑处理方法。该方法通过局部几何分析离散路径点,自适应调整每个航路点的权重,生成连续平滑的飞行轨迹。
非均匀有理B样条曲线[17]是一种高灵活度的参数化曲线建模方法,其表达式如下:
$ C(e)=\frac{\sum_{z=0}^{N_{\mathrm{n}}} w_{z} P_{z} N_{z, k}(e)}{\sum_{z=0}^{N_{\mathrm{n}}} w_{z} N_{z, k}(e)}$
式中:C(e)为参数e的位置;Pz为控制点;wz为控制点权重;Nz,k(e)为第zk次B样条基函数;Nn为控制点总个数。
为充分发挥非均匀有理B样条曲线的局部控制能力,根据路径的局部曲率自适应分配控制点权重。曲率越大,表示路径变化越剧烈,需要更强拟合能力;曲率越小,表明路径较为平滑,可赋予较低权重以保持整体光滑性。采用3点夹角法估算控制点的离散曲率。应用连续3个路径点Pz-1,Pz,Pz+1数据,计算曲率kz的步骤为:
$ \boldsymbol{v}_{z-1}=P_{z}-P_{z-1}$
$ \boldsymbol{v}_{z}=P_{z+1}-P_{z}$
$ \cos \left(\theta_{z}\right)=\frac{\boldsymbol{v}_{z-1} \cdot \boldsymbol{v}_{z}}{\left|\boldsymbol{v}_{z-1}\right| \cdot\left|\boldsymbol{v}_{z}\right|}$
$ k_{z}=\frac{2 \cdot \sin \left(\theta_{z}\right)}{\left|P_{z+1}-P_{z-1}\right|}$
式中:vz-1为从路径点Pz-1指向路径点Pz的向量;vz为从路径点Pi指向路径点Pz+1的向量;θz为vz-1vz之间的夹角。
根据计算得到的曲率值,使用线性归一化策略将其映射到指定权重区[wa,wc]:
$ w_{z}=w_{\mathrm{a}}+\left(w_{\mathrm{c}}-w_{\mathrm{a}}\right) \cdot \frac{k_{z}-k_{\mathrm{a}}}{k_{\mathrm{c}}-k_{\mathrm{a}}+\varepsilon}$
式中ε为微小常数,避免分母为0。kakc分别为kz的最小值和最大值。取wa=1,wc=3,以在保证整体连续性基础上突出高曲率区的拟合能力。
无人机活动区域为100 m×100 m,无人机从指定点出发,当无人机距终点小于步长时,认为到达终点,各参数设置见表1。针对飞行冲突解脱问题,构造多机冲突场景和级联冲突场景,并运用4种算法分别重复200次试验,统计分析收敛性能和运行时间2方面,对比4种智能优化算法的性能。
设定4机两两逆向飞行冲突场景,以MSSA算法为例展示冲突解脱路径效果,如图7所示。该冲突场景下,无人机1—4均为同航线逆向飞行(具体起止坐标见表1)。伴随飞行进程,2对无人机内部均触发飞行冲突,并分别基于解脱模型和MSSA算法实施解脱路径规划。此外,解脱过程触发2对无人机之间的飞行冲突,具体体现在无人机1和4、无人机2和3之间飞行冲突。综合考虑障碍物约束,以及两两无人机之间所需安全间隔,规划了4机飞行冲突的完整解脱路径。
图8为4机冲突解脱的收敛曲线,由图中曲线可知:在收敛性能方面,PSO、GA、SSA 与 MSSA 的最终适应度分别为22.49、20.81、14.51、8.86。其中,MSSA最快收敛至最优解,兼具更强的全局搜索能力与更高的收敛速度。SSA具备一定优化能力,但收敛较慢、最终效果不及 MSSA,PSO与GA。在计算效率方面,4种算法运行时间中位数分别为5.14、6.34、5.38、4.06 s,其中MSSA用时最短。通过图9的4机冲突解脱效率图可知:MSSA的时间波动最小,说明其不仅效率最高且稳定性最好,PSO、SSA、GA耗时较长且稳定性较差。
为进一步验证在级联冲突场景下算法的解脱效果,设定因2机冲突解脱引发的与第3机的级联冲突场景,并成功实现级联冲突快速解脱。
该冲突场景下,无人机1和无人机2为同航线逆向飞行,无人机2和无人机5为保持安全间隔下实施平行向南飞行(具体起止坐标见表1)。可知:初始运行时,无人机1和2存在逆向飞行冲突,而无人机2和5不存在飞行冲突。伴随飞行进程,无人机1和2触发逆向冲突并启动改航解脱,无人机2偏离原路径并诱发与无人机5的级联冲突。基于解脱模型和MSSA算法,快速生成第1组飞行冲突的解脱路径,同时生成第2组级联冲突的解脱路径,具体如图10所示。
图11为级联冲突解脱的收敛曲线,由图中曲线可知:在收敛性能方面,PSO,GA,SSA与MSSA的最终适应度分别为1.54、1.84、1.92、1.26。与4机逆向飞行场景一致,MSSA算法快速收敛,并在迭代过程中保持高稳定性。SSA与GA 虽具备优化能力,但初始解质量与收敛速度均不及 MSSA,PSO表现最差。在运行时间方面,4种算法运行时间中位数分别为3.21、3.82、3.17、3.03 s。通过图12的级联冲突解脱效率图可知;MSSA的时间波动范围最小,运行稳定性最佳;其他3种算法波动更大,运行时间也略长。
1) 文中提出的改进SSA,能够通过优化种群结构,增强算法全局搜索能力与局部扰动性能,解决复杂冲突问题的效率与求解精度得到提升。
2) 设计多个逆向飞行冲突场景,对多机冲突和级联冲突解脱进行仿真运行,应用文中提出的改进算法在4机逆向飞行冲突场景下的适应度和用时分别为8.86、4.06 s,在3机级联冲突场景下的适应度和用时分别为1.26、3.03s,均为最优值,验证了新算法快速生成解脱路径的可行性。
3) 构建的基于最低能耗的无人机解脱路径模型,可为多机逆向飞行冲突快速提供解脱,实现高安全、高效率、高容量的低空空域资源配置方案。
  • 国家自然科学基金资助(52272356)
  • 民航航班广域监视与安全管控技术重点实验室开放基金资助(GY202507)
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2026年第36卷第5期
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doi: 10.16265/j.cnki.issn1003-3033.2026.05.1015
  • 接收时间:2025-12-10
  • 首发时间:2026-06-26
  • 出版时间:2026-05-28
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  • 收稿日期:2025-12-10
  • 修回日期:2026-03-12
基金
国家自然科学基金资助(52272356)
民航航班广域监视与安全管控技术重点实验室开放基金资助(GY202507)
作者信息
    1 中国民航大学 空中交通管理学院, 天津 300300
    2 中国民航大学 科技创新研究院, 天津 300300

通讯作者:

** 赵嶷飞(1971—),男,湖南常德人,博士,教授,主要从事空中交通管理、空域融合运行安全与效率研究。E-mail:
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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