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Efficient wideband jammer nulling when using stretch processing

机译:使用拉伸处理时高效的宽带干扰置零

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Techniques are described for performing adaptive jammer nulling over extremely wide bandwidths on radar systems which use linear frequency modulated (LFM) waveforms and stretch processing. It is assumed that the range uncertainty of the target is a small percentage of the equivalent range extent of the uncompressed pulse. The assumption allows the cancellation to take place following stretch processing in either the time domain using a narrowband sliding filter that keeps up with the chirp fate or in the frequency domain. The new approach supports nulling performance over gigahertz of bandwidth comparable to that previously achieved over a few megahertz using approximately the same number of spatial degrees of freedom.
机译:描述了用于在使用线性频率调制(LFM)波形和拉伸处理的雷达系统上的超宽带宽上执行自适应干扰置零的技术。假设目标的范围不确定性是未压缩脉冲的等效范围范围的一小部分。该假设允许在紧随线性调频后的窄带滑动滤波器在时域中进行拉伸处理后在频域中进行抵消。新方法支持在千兆赫兹带宽上的调零性能,与以前使用大约相同数量的空间自由度在几兆赫兹上实现的调零性能相当。

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