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首页> 外文期刊>IEEE Transactions on Vehicular Technology >Range Ambiguous Clutter Suppression for FDA-MIMO Forward Looking Airborne Radar Based on Main Lobe Correction
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Range Ambiguous Clutter Suppression for FDA-MIMO Forward Looking Airborne Radar Based on Main Lobe Correction

机译：基于主叶校正的FDA-MIMO前瞻性空气雷达范围模糊杂波抑制

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摘要

Generally ground clutter has serious range dependence and range ambiguity in the forward-looking array airborne radar system under a high pulse repetition frequency (PRF) system. In this work, a range ambiguous clutter suppression method based on transmitting beam main lobe correction for the FDA MIMO radar is proposed. Firstly, this method uses the designed transmission pulse weights to compensate for the initial phases formed by the accumulation of frequency increments between pulses, so as to solve the problem that the main lobe high gain illuminated angle is inconsistent between the MIMO equivalent transmitting beampattern pulses synthesized at the receiving in the traditional FDA MIMO system. Secondly, by restoring and compensating received echoes, the influence of the main lobe correction weights of the transmitting signal is eliminated. Finally, through the characteristics of transmitter correction compensation to distinguish different range ambiguous clutters, the echoes from the range ambiguous areas can be discretely distributed in the power spectrum while preserving the signal echoes in the observation area. Thus range ambiguous clutter suppression is realized. The simulation results show that the proposed method can improve the clutter suppression performance compared with the MIMO and linear frequency increment FDA radar.
机译：通常，地面杂波在高脉冲重复频率（PRF）系统下，前向阵列机载雷达系统中具有严重的范围依赖性和范围模糊性。在这项工作中，提出了一种基于发送FDA MIMO雷达的发射光束主叶校正的范围模糊的杂波抑制方法。首先，该方法使用设计的传输脉冲权重来补偿通过脉冲之间的频率增量的累积形成的初始相位，以解决主瓣高增益照明角度在合成的MIMO等效发射束脉冲之间不一致的问题在传统的FDA MIMO系统中接收。其次，通过恢复和补偿接收的回波，消除了发射信号的主叶校正权重的影响。最后，通过发射器校正补偿的特性来区分不同范围的凹凸不平，来自范围模糊区域的回波可以在功率谱中分散，同时保留观察区域中的信号回波。因此，实现了范围模糊的杂波抑制。仿真结果表明，与MIMO和线性频率增量FDA雷达相比，该方法可以提高杂波抑制性能。

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