Online task planning method of anti-ship missile based on rolling optimization

Based on the wave attack task planning method in static complex environment and the rolling optimization framework, an online task planning method in dynamic complex environment based on rolling optimization is proposed. In the process of online task planning in dynamic complex environment,online task planning is based on event triggering including target information update event, new target addition event, target failure event, weapon failure event, etc., and the methods include defense area reanalysis, parameter space update, and mission re-planning. Simulation is conducted for different events and the result shows that the index value of the attack scenario after re-planning is better than that before re-planning and according to the probability distribution of statistical simulation method, the index value distribution after re-planning is obviously in the region of high index value, and the index value gap before and after re-planning is related to the degree of posture change.

Time-varying fault-tolerant formation tracking based cooperative control and guidance for multiple cruise missile systems under actuator failures and directed topologies

This paper studies time-varying fault-tolerant formation tracking problems for the multiple cruise missile system under directed topologies subjected to actuator failures. Firstly, the timevarying fault-tolerant formation tracking process for the multiple cruise missile system is divided into the guidance loop and the control loop. Then protocols are constructed to accomplish distributed fault-tolerant formation tracking in the guidance loop with the adaptive updating mechanism, in the condition where neither the knowledge about actuator malfunctions nor any global information of the communication topology remains available. Moreover, sufficient conditions to accomplish formation tracking are presented, and it is shown that the multiple cruise missile system can carry on the predefined time-varying fault-tolerant control (FTC) formation tracking through the active disturbances rejection controller (ADRC) and the proportion integration (PI) controller by the way of the fault-tolerant protocol utilizing the designed strategies, in the event of actuator failures. At last, numerical analysis and simulation are designed to verify the theoretical results.

Saturation attack based route planning and threat avoidance algorithm for cruise missiles

According to the characteristic of cruise missiles,navigation point setting is simplified,and the principle of route planning for saturation attack and a concept of reference route are put forward.With the help of the shortest-tangent idea in route-planning and the algorithm of back reasoning from targets,a reference route algorithm is built on the shortest range and threat avoidance.Then a route-flight-time algorithm is built on navigation points.Based on the conditions of multi-direction saturation attack,a route planning algorithm of multi-direction saturation attack is built on reference route,route-flight-time,and impact azimuth.Simulation results show that the algorithm can realize missiles fired in a salvo launch reaching the target simultaneously from different directions while avoiding threat.

Passive Acoustic Radar for Detecting Supersonic Cruise Missile

A Passive Acoustic Radar is presented as a necessary complement to electromagnetic wave radar, which will be expected to be an effective means for detecting cruise missiles. Acoustic characteristics of supersonic flying projectiles with diverse shapes are expounded via experiment. It is pointed out that simulation experiment could be implemented using bullet or shell instead of cruise missile. Based on theoretical analysis and experiment, the "acoustic fingerprint" character of cruise missile is illustrated to identify it in a strong noise environment. After establishing a locating mathematical model,the technique of acoustic embattling is utilized to resolve a problem of confirming the time of early-warning, considering the fact that velocity of sound is much slower than that of light. Thereby, a whole system of passive acoustic radar for detecting supersonic cruise missile is formed.

Study on Anti-ship Missile Saturation Attack Model

Based on the analysis for the interception process of ship-to-air missile system to the anti-ship missile stream, the antagonism of ship-to-air missile and anti-ship missile stream was modeled by Monte Carlo method. This model containing the probability of acquiring anti-ship missile, threat estimation, firepower distribution, interception, effectiveness evaluation and firepower turning, can dynamically simulate the antagonism process of anti-ship missile attack stream and anti-air missile weapon system. The anti-ship missile's saturation attack stream for different ship-to-air missile systems can be calculated quantitatively. The simulated results reveal the relations among the anti-ship missile saturation attack and the attack intensity of anti-ship missile, interception mode and the main parameters of anti-air missile weapon system. It provides a theoretical basis for the effective operation of anti-ship missile.

Damage effectiveness assessment method for anti-ship missiles based on double hierarchy linguistic term sets and evidence theory

The research on the damage effectiveness assessment of anti-ship missiles involves system science and weapon science, and has essential strategic research significance. With comprehensive analysis of the specific process of the damage assessment process of anti-missile against ships, a synthetic damage effectiveness assessment process is proposed based on the double hierarchy linguistic term set and the evidence theory. In order to improve the accuracy of the expert ’s assessment information, double hierarchy linguistic terms are used to describe the assessment opinions of experts. In order to avoid the loss of experts ’ original information caused by information fusion rules, the evidence theory is used to fuse the assessment information of various experts on each case. Good stability of the assessment process can be reflected through sensitivity analysis, and the fluctuation of a certain parameter does not have an excessive influence on the assessment results. The assessment process is accurate enough to be reflected through comparative analysis and it has a good advantage in damage effectiveness assessment.

Firepower distribution method of anti-ship missile based on coupled path planning

Anti-ship missile coordinated attack mission planning is a complex multi-objective optimization problem with multiple combinations of platforms, strong decision-making constraints,and tightly coupled links. To avoid the coupling disorder between path planning and firepower distribution and improve the efficiency of coordinated attack mission planning, a firepower distribution model under the conditions of path planning is established from the perspective of decoupling optimization and the algorithm is implemented. First, we establish reference coordinate system of firepower distribution to clarify the reference direction of firepower distribution and divide the area of firepower distribution;then, we construct an index table of membership of firepower distribution to obtain alternative firepower distribution plans;finally, the fitness function of firepower distribution is established based on damage income, missile loss,ratio of efficiency and cost of firepower distribution, and the mean square deviation of the number of missiles used, and the alternatives are sorted to obtain the optimal firepower distribution plan. According to two simulation experiments, the method in this paper can effectively solve the many-to-many firepower distribution problem of coupled path planning. Under the premise of ensuring that no path crossing occurs, the optimal global solution can be obtained, and the operability and timeliness are good.

Research on terminal maneuver strategy of anti-ship missiles

To design the terminal maneuver strategy of an anti-ship missile,first,the analytical solution of miss distance when an anti-ship missile has planar weaving maneuver and three-dimension spiral maneuver is presented,in which not only the amplitude and frequency are considered but also the initial phase is taken into account.Next,based on the analytical solution of miss distance,the effects on the miss distance of the amplitude,frequency,initial phase of the anti-ship missile＇s maneuver acceleration and the order of flight control system of the air-ship missile are analyzed.Finally,the optimum weaving maneuver and spiral maneuver which make the miss distance be the largest under some conditions are designed,which is of important meaning for increasing the survival probability of the anti-ship missile.

Improvement of Intercept Probability Algorithm for Anti-ship Missile Based on Search Theory

Traditional intercept probability model has some drawbacks and can not meet the demands of command and control system. Aiming at this problem, a new calculation method based on search theory, terminal control area distribution function of anti-ship missile, target distribution function and missile's radar scan feature is proposed. Under the condition of common target distribution, an intercept probability model for present point attacking is determined. The simulation verifies its effectiveness and establishes the selecting model for aiming point when enemy ships evade in high speed.

超声速巡航导弹气动力与推力参数一体化在线辨识

为准确预示超声速巡航导弹飞行中的气动力和推力特性,提升飞行性能及任务适应性,提出了一种气动力与推力参数一体化在线辨识方法。建立了以固体火箭冲压发动机为动力的超声速巡航导弹在纵平面的运动模型,建立了巡航段气动力系数和推力系数多项式模型,采用无迹卡尔曼滤波算法,开展了气动力与推力参数一体化在线辨识仿真验证,基于飞行试验对辨识性能进行了比较验证。研究表明,对超声速巡航导弹进行气动力与推力参数一体化辨识是必要的和有效的,提出的方法可应用于飞行过程中参数在线辨识。

2023年国外高超声速领域发展综述

高超声速武器将使未来战争的样式产生深刻的变化,是当前装备科技领域博弈的焦点之一。对2023年美国、俄罗斯、法国、印度等世界主要国家在高超声速领域的重要发展动向进行梳理,分析其发展态势。最后,对国外高超声速技术的发展进行了总结。

基于自适应干扰观测器的巡航导弹掠海飞行轨迹跟踪控制

构建了巡航导弹动力学模型,将不确定性项与风浪干扰项合并,同时引入一种自适应干扰观测器予以补偿,提高导弹控制系统的鲁棒性,并利用高阶滑模控制器和任意阶微分器实现控制系统反馈环节的有限时间镇定.仿真实验表明,该方案可实现在1∼7级海况下巡航导弹掠海飞行的高精度轨迹跟踪,同时具备较高的收敛速度和良好的适应性.

基于特征融合的轻量化巡飞弹目标跟踪算法

针对巡飞弹平台上的视觉目标跟踪算法,开始引入深度学习思想,但是受到硬件平台算力限制的影响,提出一种轻量化的基于深度学习的孪生网络框架,在较低计算量的情况下保证巡飞弹的跟踪性能。根据IOU质量评估分支和回归分支结构,提出了一种新的特征融合方式。通过1×1卷积调整特征层通道数,控制通道数比例,对不同特征层的通道按比例进行深浅层特征拼接,用于后续的特征融合模块。在特征拼接前,引入特征合并的方法来获得有不同感受野的融合特征,进一步提高特征分辨率。将提出的新特征融合方式和特征合并方式进行纵向与横向的特征融合,充分利用特征属性,提高算法性能。根据巡飞弹硬件平台的属性限制,框架采用轻量化的AlexNet网络作为骨干网络。在OTB100、GOT-10K、UAV123三个数据集上测试,框架整体以160 fps的帧率保证了较高准确度和成功率。在满足巡飞弹特殊工作环境的基础上,实现了较为先进的跟踪性能。整体框架相对简单且性能较高,有较好的跟踪实时性,可加入其他模块来进一步提升跟踪性能。

基于巡航导弹制导机理的电子对抗策略研究

巡航导弹制导过程可以分为发射阶段、飞行中段和飞行末段,分别采用不同类型的制导方式。论文以“战斧”海基对陆巡航导弹为例,研究了巡航导弹的三种制导方式技术机理,对应分析了电子对抗干扰机理,提出了巡航导弹电子对抗策略,对联合防空电子对抗作战运用具有一定参考意义。

国外巡飞防空武器现状及发展研究

传统巡飞弹主要用于执行对地/海作战任务,而近年来在军事需求和军事技术进步的持续推动下,将巡飞弹用于防空作战得到快速发展。以美国为首的军事强国,推出了一系列巡飞防空武器演示验证项目,并有部分已形成实战能力,有望成为未来防空装备体系中的重要组成部分,可能会深刻改变未来作战样式。本文综合分析了国外巡飞防空武器发展现状,梳理需要突破的关键技术,并提出了巡飞防空武器未来的发展方向。

基于学习型粒子群算法的巡航导弹路径规划仿真验证

巡航导弹路径规划旨在提高巡航导弹突防能力和生存能力,确保命中精度,在保证作战任务的有效完成方面起着重要作用。其问题实质是在给定的约束条件下确定一条飞行路线,在满足巡航导弹机动特性的情况下,使巡航导弹能够最大程度下安全地到达目标位置。针对巡航导弹路径规划问题中易陷入局部最优、收敛性能较差、生成路径效能较低等问题,提出基于学习型粒子群算法的巡航导弹路径规划方法。首先对巡航导弹路径规划空间进行划分,确定生成路径的适应度函数;借鉴强化学习思想,在粒子群算法中引入Q学习机制,实现算法局部搜索和全局搜索的平衡。仿真结果表明,基于学习型粒子群算法的巡航导弹路径算法能够比较好地解决巡航导弹路径规划问题,相比经典粒子群算法,能够更加快速、稳定地搜索到最优路径。

675装甲钢遮弹层抗缩比巡航导弹侵彻研究

为研究675装甲钢遮弹层的防护能力和抗巡航导弹侵彻性能,分析侵彻过程中弹靶作用机理以及装甲钢力学行为,设计了缩比巡航导弹侵彻675装甲钢的实验及相应的数值模拟。结果表明:675装甲钢硬度很高,侵彻基本保持在开坑阶段,弹坑面积小,靶板整体变形并不显著;侵彻过程中弹丸由弹头与弹身交接处断裂,因弹头侵蚀和弹丸断裂损失的能量较大,致使靶板变形小,靶板变形主要发生在弹丸断裂前;随着侵彻速度由350 m/s增至600 m/s,靶板弹坑深度和背突高度随速度线性增加;弹坑直径由1.1倍弹丸外径增至1.5倍弹丸外径,弹丸因质量侵蚀损失的能量由总能量的42.4%增加至68.6%;弹丸加速度在靶板磨损弹头部一半,弹头与弹身交接处发生塑性变形时达到最大。

CG-02风洞螺旋桨动力性能测试数据采集系统

针对某便携式巡飞弹的螺旋桨动力性能测试的风洞试验数据采集需求,基于CG-02风洞进行了数据采集系统的设计。数据采集系统采用分布式结构,硬件基于PXI总线和工业以太网搭建。软件采用模块化设计思想,基于LabVIEW图形化编程语言对不同功能模块进行开发,实现了气动力信号和转速信号的同步采集。对试验中的信号抗干扰技术和转速测量技术进行了研究,提出了软、硬件滤波相结合的信号抗干扰方法和基于K-means聚类的螺旋桨转速测量方法。使用本数据采集系统开展测试试验,结果表明系统满足试验要求。

异类导弹协同打击任务规划系统设计研究

根据反舰弹道导弹和反舰巡航导弹在反舰作战使用上的异同,从协同打击任务规划系统的基本功能出发,设计了任务规划的8个功能模块,分析了与其他系统之间的关系,提出了系统需要关注的关键技术,给出了一个规划实例,为异类导弹的协同作战规划技术应用研究提供了思路。

多约束条件下弹体末端制导建模方法研究

针对制导弹体考虑终端落角、攻角回零及飞行过程中最大过载约束的多约束条件下末端制导问题,提出了一种多约束自适应最优导引律的设计方法,详细推导了带落角约束、目标函数加入剩余飞行时间的幂函数拓展得到的一组带制导阶数n的最优导引律,并在此基础上深入分析导引律解析特性寻求制导阶数n与末端攻角回零、最大过载约束的关系。根据研究分析提出了一种可在制导初始时刻在线确定制导阶数n应用于导引律的制导方法满足多种约束条件。仿真结果表明,该制导方法适用于制导火箭弹多约束制导问题,并具有较强的鲁棒性。