无人机航迹规划分段需求分析

介绍了无人机的作战使用特点,说明了无人机的航迹规划过程.依据分段需求分析的思想,对无人机全程航迹进行了需求分析,探讨了各段航迹规划的目标.分析了各段航迹面临的威胁并建立了相应的模型,对无人机航迹规划系统的设计与实现具有一定的参考意义.     

无人机假目标干扰有效性要求分析

分析无人机任务航路上的假目标干扰有效性有助于加深飞行航路和任务配置参数的理解。在简要描述假目标无人机的十扰过程和干扰原理的基础上,从空域要求、干扰样式要求、功率要求和航路要求四个方面出发,提出了假目标无人机成功实施干扰所需的前提条件,为判断其在飞行航路上能否彤成有效干扰提供了依据。     

主/被动雷达情报协同浅议

通过对主动雷达和被动雷达各自优缺点的论述,阐明了主动雷达和被动雷达在战争中的地位和面临的威胁.为了提高生存能力,充分发挥主动雷达和被动雷达的效能,分析研究了主/被动雷达情报协同技术独特的优点和战时应用价值及实际意义.     

无人机任务规划系统需求分析

通过对现代战场条件下无人机发展趋势、作战使用特点及无人机任务规划过程的分析,指出了无人机作战使用人员急需智能任务规划工具的支持.介绍了任务规划系统的概念,分析了无人机任务规划系统的需求,为发展无人机任务规划系统提供参考.     

无人机对组网雷达干扰资源分配建模

在分析组网雷达技术的基础上,以组网雷达融合中心检测概率为目标函数,建立针对组网雷达各级系统的干扰资源优化分配模型。结合电子对抗无人机平台的特点,分析电子对抗无人机在干扰组网雷达时的资源分配问题。     

Design of airport wake vortex monitoring system based on 1.5-μm pulsed coherent Doppler lidar

To shun the vortex hazard,the airport wake vortex monitoring system based on 1.5-mm pulsed coherent Doppler lidar is designed successfully in this paper.Based on the realistic analytical model,the wake vortex generated by airbus A340 under typical flight condition is simulated.Then the principle of airport wake vortex monitoring is introduced,and the work flow of the monitoring system is also presented.Moreover,based on the mechanism of vortex coherent detection and typical system parameters,both detection SNR and detection precision are obtained through numerical simulations.When the system outputs 2 J energy,the coherent detection SNR at 10 km distance is up to 23.452,and detection precision can reach 0.328 m/s.With the wake vortex monitoring experiment of A340,some vortex parameters are estimated.Due to these results comparatively coinciding with the previous simulation conclusions,the ability of Doppler lidar for full-scale wake vortex characterization and real time measurement is demonstrated.The study shows that the wake vortex detection based on 1.5-mm pulsed coherent Doppler lidar has the advantages of high accuracy and far distance,and the designed airport wake vortex monitoring system has proved to be effective and feasible,which has significant development and application prospect in the aspect of assuring flight security and increasing airport capacity.     

多激光制导目标时激光角度欺骗干扰问题研究

针对多机编队空对地激光制导精确打击时激光角度欺骗干扰问题,对多目标时指示激光信号的方位和编码特征进行了理论研究。结果表明:当指示激光信号时间差小于任一信号的重复周期且信号的重复周期为整数倍关系,或者指示激光信号时间差大于激光欺骗干扰设备解码时间时,激光欺骗干扰设备可以对组合信号进行解码,并分析了相应干扰方法。上述两种情况之外则会组合为伪随机序列码信号,激光欺骗干扰设备不能正确解码及实施干扰。