Physical emission of spatially-modulated radar
Physical emission of spatially-modulated radar
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DOI：
10.1049/iet-rsn.2014.0057
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发表时间：
2014-12
影响因子：
1.7
通讯作者：
S. Blunt;Patrick M. McCormick;T. Higgins;M. Rangaswamy
中科院分区：
文献类型：
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作者：
S. Blunt;Patrick M. McCormick;T. Higgins;M. Rangaswamy
利用最近开发的任意多相代码物理实现作为频谱包含良好的波形，空间调制的概念得到了发展，从而将时变波束图案合并到单个脉冲的物理发射中。 MIMO 雷达这一大类子集的灵感来自于人眼内固定眼球运动的操作，以增强视觉敏锐度，并且还包含了应用于脉冲雷达的频率分集阵列的概念。根据该空间调制框架，根据延迟和角度域的分辨率和旁瓣水平评估了一些特定的发射示例。还考虑了空间调制对光谱内容的影响，并提出了可能的联合延迟角发射设计标准。选定目标排列的模拟结果证明了增强辨别力的前景，并为开发未来可能模仿视觉皮层显着方面的认知雷达功能奠定了基础。
Leveraging the recent development of a physical implementation of arbitrary polyphase codes as spectrally well-contained waveforms, the notion of spatial modulation is developed whereby a time-varying beampattern is incorporated into the physical emission of an individual pulse. This subset of the broad category of MIMO radar is inspired by the operation of fixational eye movement within the human eye to enhance visual acuity and also subsumes the notion of the frequency-diverse array for application to pulsed radar. From this spatial modulation framework, some specific emission examples are evaluated in terms of resolution and sidelobe levels for the delay and angle domains. The impact of spatial modulation upon spectral content is also considered and possible joint delay-angle emission design criteria are suggested. Simulation results of selected target arrangements demonstrate the promise of enhanced discrimination and the basis for the development of future cognitive radar capabilities that may mimic salient aspects of the visual cortex.