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首页> 外文会议>International radar symposium(IRS 2003) : Proceedings >Improving the Performance of Future Airborne Radars for Detecting Fast Manoeuvring Targets
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Improving the Performance of Future Airborne Radars for Detecting Fast Manoeuvring Targets

机译：改善未来机载雷达检测快速机动目标的性能

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摘要

This paper deals with new algorithms for improving the detection range or maesurement accuracy of FutureAirborne Radars for fast manoeuvring targets. Currently, in Search and Track modes, targets are assumed withconstant velocity during one burst (one burst = one Coherent Processing Interval) and also during a dwell consistingof several bursts. Furthermore, it is assumed that target range remains approximately constant during aburst. Modern Radars have now achieved resolution values in range and Doppler such that detection performanceis reduced for high velocity targets and manoeuvring targets with acceleration components.With regard to target range, it is now possible that during a burst, the target could migrate to an adjacent rangegate. In velocity the target can now be spread over several Doppler filters. Thus, in order to obtain optimumdetection capability, motion compensation algorithms are necessary.Future Airborne Radars have three principal modes: Search, Confirmation and Track. In Search mode nothingis known about the target. Hence detection range improvement requires multidimensional signal processingwhere acceleration compensation is performed for different possible linear accelerations. Such signal processingrequires modern signal processors with sufficient computing power.Switching to Confirmation Mode, conditions become less severe. In this case, some target information isavailable, based on the output of the Search Mode, which can be fed into a model for reducing ConfirmationMode target losses. This is done by compensating range gate straddling and Doppler straddling of the target tobe confirmed. Further, the linear acceleration component in boresight direction can also be compensated. Inthis case, the required computing power is dependent on the number of targets to be confirmed.The best conditions are found on transition to a track mode. Now detailed target information is availablewhich can be used to optimise either the detection range or the measurement accuracy. In all cases, accelerationcompensation will be performed for the targets being tracked.
机译：本文提出了新的算法，以提高快速机动目标的未来机载雷达的检测范围或测量精度。当前，在“搜索”和“跟踪”模式中，假定目标在一个突发（一个突发=一个相干处理间隔）期间以及在由多个突发组成的驻留期间处于恒定速度。此外，假设目标范围在爆发期间保持大致恒定。现代雷达现在已经达到了距离和多普勒的分辨率值，从而降低了对高速目标和带有加速度分量的机动目标的检测性能。关于目标范围，现在有可能在爆发期间目标可能迁移到相邻的测距门。在速度上，目标现在可以分布在多个多普勒滤波器上。因此，为了获得最佳的检测能力，必须使用运动补偿算法。未来机载雷达具有三种主要模式：搜索，确认和跟踪。在搜索模式下，对目标一无所知。因此，检测范围的改善需要多维信号处理，其中针对不同的可能线性加速度执行加速度补偿。这种信号处理需要具有足够计算能力的现代信号处理器。切换到“确认模式”后，情况变得不太严重。在这种情况下，基于搜索模式的输出，可以使用一些目标信息，这些信息可以输入到用于减少ConfirmationMode目标损失的模型中。这是通过补偿待确认目标的距离门跨度和多普勒跨度来完成的。此外，在视轴方向上的线性加速度分量也可以得到补偿。在这种情况下，所需的计算能力取决于要确认的目标数量。过渡到跟踪模式时会找到最佳条件。现在提供了详细的目标信息，可用于优化检测范围或测量精度。在所有情况下，都会对要跟踪的目标执行加速度补偿。

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  • 来源
  • 会议地点 Dresden(DE);Dresden(DE)
  • 作者

    Dieter Nagel; JenniferSmillie; Steven Smith;

  • 作者单位

    Systems and Defence Electronics, Airborne Systems, Radar Signal ProcessingW?rthstra?e 8589077 Ulm, GermanyTelephone: (+49 731) 392-3798Telefax: (+49 731) 392-4947E-mail: dieter.nagel@sysde.eads.net;

    Systems and Defence Electronics, Airborne Systems, Radar Signal ProcessingW?rthstra?e 8589077 Ulm, GermanyTelephone: (+49 731) 392-3798Telefax: (+49 731) 392-4947;

    Systems and Defence Electronics, Airborne Systems, Radar Signal ProcessingW?rthstra?e 8589077 Ulm, GermanyTelephone: (+49 731) 392-3798Telefax: (+49 731) 392-4947;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 雷达;
  • 关键词

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