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在分析雷达对抗侦察无人机侦察距离和瞬时侦察区域面积的基础上,对侦察无人机作战运用进行定量分析。首先,在假设无人机飞行高度固定的前提下,建立无人机相对目标雷达航路捷径与最大侦察航路长度的函数关系,而后在此基础上分析了无人机飞行高度对最大侦察航路长度和最佳航路捷径的影响,最后对侦察任务中无人机的兵力需求进行了分析。 相似文献
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分析了无人机载小型合成孔径雷达(SAR)可用于战场侦察的基本工作模式;讨论了SAR分辨率与对目标分辨能力的区别;从机载SAR成像几何关系的角度,研究了载机航向测量误差、载机空间位置测量误差、载机飞行速度测量误差、雷达高度误差、雷达斜距测量误差等因素对实时目标定位精度的影响程度,提出了实时定位与读图定位结合使用的观点。其结果对于无人机载小型SAR的设计和应用都有重要意义。 相似文献
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为实现小型无人机目标识别,将雷达技术应用于探测与对抗无人机.首先从目标散射特性方面调研,研究结果表明微小无人机后向散射截面通常与鸟类、昆虫等类似,导致雷达虚警率较高.然后,从无人机回波分析研究,微多普勒信号具备判别飞行目标的可分性.比较多种微多普勒特征提取技术和分类技术,表明利用倒谱、矩阵分解以及多尺度分析能够提高特征... 相似文献
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极有发展前途的三种新型战场侦察雷达 总被引:1,自引:0,他引:1
由于现代战争对侦察雷达提出了大范围、宽正面、全天候、反隐蔽(反隐身)、实时可靠地探测战场目标的要求,因此,侦察雷达已从传统地陆基型向升空型发展。在未来21世纪的战争中,机载远程战场侦察雷达系统、机载穿透树丛侦察雷达和无人机载战场侦察雷达,将成为极有发展前途的情报侦察传感器。本文简要评述这三种新体制的侦察雷达。 相似文献
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由于现代战争对侦察雷达提出了大范围、宽正面、全天候、反隐蔽、实时可靠地探测战场目标的要求,因此,侦察雷达已从传统地陆基型向升空型发展,在未来21世纪的战争中,机载远程战场侦察雷达系统、机载穿透树丛侦察雷达和无人机载战场侦察雷达,将有有发展前途的情报侦察传感器本文简要评术这三种新体制的侦察雷达。 相似文献
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现代高科技战争是信息化条件下的战争,交战双方必须及时得到准确的信息支持。随着信息技术不断进步,情报侦察监视手段不断向前发展,各种新技术侦察手段不断涌现,从传统的雷达侦察、电子侦察、人工情报发展到侦察卫星、有人/无人机侦察、预警侦察、战场电视、两栖侦察等多种侦察手段。 相似文献
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偏振成像技术在大气探测、环境监测、资源普查和军事侦察应用中具有十分重要的作用,该技术在航空遥感和空间遥感中已经开始使用。临近空间飞行器的发展为偏振成像遥感提供了新的应用舞台,并显示出了明显的优势。本文介绍偏振原理、偏振探测和成像方式,针对临近空间飞行器给出了一种凝视式高分辨率偏振成像系统的方案,并通过论证和分析性能得出了该方案实现的可行性。 相似文献
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在利用多无人机进行多目标侦察时,需要进行合理的任务分配。优化无人机资源与任务重要程度之间的关系,才能充分发挥多无人机侦察的优势。为了实现多无人机协同侦察时的时间资源分配优化,首先根据任务点和无人机的位置分布情况对多无人机进行预分配,然后对预分配后的空闲无人机进行协同时间资源优化。将空闲无人机协同时间资源分配问题建模为重叠联盟博弈模型,通过对所构建模型的求解,得出多无人机的协同侦察时间资源分配方案。仿真结果表明,优化时间资源后侦察系统的收益得到了提升。 相似文献
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Lucas M. Shanbhag N. Roy K. Kurdahi F. Fagan J. 《Circuits and Devices Magazine, IEEE》2004,20(4):22-30
Advanced U.S. Department of Defense (DoD) surveillance sensors are continually pushing the need for ever-increasing electronics performance. Full-time, large-area ground surveillance capability, for instance, has been proven to be of great importance in recent conflicts; it drives the requirement for the signal processing of growing numbers of radar channels with increasing bandwidth. At the same time, the surveillance platforms carrying these sensors, typified by unmanned aerial vehicles (UAVs) or other small aircraft or spacecraft, are being pushed to be smaller, lighter, cheaper, and to have longer mission durations. 相似文献
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本文建立了预警雷达模型、雷达检测模型和雷达威胁模型,并在此基础上设计了无人机与敌方预警雷达的交互系统,最后设定具体作战背景,实现了一种无人机干扰雷达作战仿真系统,为无人机的作战使用提供了一种参考. 相似文献
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The optimal and quasi-optimal algorithms of processing of space-time signals in a multibeam radar system intended for detection and measurement of parameters of low-observable air targets of unmanned aerial vehicles (UAVs) are considered. Algorithms for detection of targets against the background of stationary and moving surfaces are obtained. The possibility to detect and measure the parameters of targets situated at any point of specified coverage area during a short time (several fractions of a second) is shown. 相似文献
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Samad T. Bay J.S. Godbole D. 《Proceedings of the IEEE. Institute of Electrical and Electronics Engineers》2007,95(1):92-107
Military systems are the motivational driver for much of the technology development conducted at applied research laboratories around the world. As the needs of the world's militaries change, so does the focus of this research and development. In this paper, we discuss how the fundamental characteristics of military operations in urban terrain (MOUT) impose requirements and constraints on sensing and reconnaissance. We highlight the importance of a new class of small unmanned aerial vehicles (UAVs) for network-centric military urban operations. We review some of the UAVs that have been developed in recent years, and that are under development, with particular attention to their endurance, portability, performance, payload, and communication capabilities. Selected university testbeds are also briefly noted. Over the last few years there has been considerable research focused on how these small UAVs, both individually and collectively, can operate autonomously in urban environments and help capture and communicate needed information. We discuss some of this research; specific topics covered include guidance and control for autonomous operation, multi-UAV coordination and route optimization, and ad-hoc networking with UAV nodes. A new concept of operations is described that relies on coordination and control of a heterogeneous suite of small UAVs for surveillance and reconnaissance operations in urban terrain 相似文献
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雷达对无人机的探测性能分析可为低空监视雷达设计、对无人机探测与反制提供重要参考。基于X波段固定翼无人机的全极化暗室实测数据,采用零记忆非线性变换(ZMNL)法生成相关Weibull杂波,分析了平方律检测器对无人机的检测概率,并根据仿真获得的检测所需最小信杂比,借助地杂波背景下的雷达距离方程计算了全极化雷达对低空无人机的探测距离。结果表明:考虑到无人机起伏损失和地杂波强度在不同极化方式之间的差异,VV极化的探测距离最远,交叉极化次之,而HH极化的综合表现相对较差。 相似文献