Performance Analysis of Ultra-Wideband Channel for Short-Range Monopulse Radar at Ka-Band
Performance Analysis of Ultra-Wideband Channel for Short-Range Monopulse Radar at Ka-Band
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DOI：
10.1155/2012/710752
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
N. Iwakiri;N. Hashimoto;Takehiko Kobayashi
中科院分区：
文献类型：
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作者：
N. Iwakiri;N. Hashimoto;Takehiko Kobayashi
Ka波段超宽带（UWB）车载雷达固有地具有高距离分辨率。作者研制了一个原型超宽带单脉冲雷达配备了一个二元接收天线阵列，并报告了它的测量结果。在本文中，一个更详细的验证使用这些测量。采用匹配滤波和特征分解对测量值进行分析，提取多径分量，以检验接收到的UWB单脉冲信号的行为。其次，利用提取的多径分量对基于窄带假设的传统测向算法进行了评估，得到了与宽带信号无关的超宽带单脉冲信号的可接受到达角（AOA）。为了设计合适的雷达波形，还研究了由于对接收到的单脉冲进行多次平均而导致的性能下降。
High-range resolution is inherently provided with Ka-band ultra-wideband (UWB) vehicular radars. The authors have developed a prototype UWB monopulse radar equipped with a two-element receiving antenna array and reported its measurement results. In this paper, a more detailed verification using these measurements is presented. The measurements were analyzed employing matched filtering and eigendecomposition, and then multipath components were extracted to examine the behavior of received UWB monopulse signals. Next, conventional direction finding algorithms based on narrowband assumption were evaluated using the extracted multipath components, resulting in acceptable angle-of-arrival (AOA) from the UWB monopulse signal regardless of wideband signals. Performance degradation due to a number of averaging the received monopulses was also examined to design suitable radar's waveforms.