OFDM-based wideband phased array radar architecture
OFDM-based wideband phased array radar architecture
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基于 OFDM 的宽带相控阵雷达架构
DOI：
10.1109/radar.2008.4721072
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
G. Meyer
中科院分区：
文献类型：
--
作者：
J. P. Stralka;G. Meyer
现代雷达系统通常具有用于增加功率孔径积和/或角分辨率的大型相控阵天线与用于精细距离分辨率的宽瞬时信号带宽的冲突要求。脉冲到脉冲分集也可能被期望作为对抗相干中继器干扰的对策。利用正交频分复用的多载波特性对宽瞬时带宽脉冲进行编码，我们提出了一种新型的数字相控阵架构，该架构可减轻阵列主波束被电子引导偏离宽边时所经历的色散效应。其结果是能够发射和接收宽带伪随机相位编码脉冲与相控阵天线。仿真结果被用来量化的架构的好处。还提供了数字正交频分复用波形生成的概述。
Modern radar systems often have the conflicting requirements of a large phased array antenna for increased power-aperture product and/or angular resolution versus wide instantaneous signal bandwidth for fine range resolution. Pulse-to-pulse diversity may also be desired as a countermeasure against coherent repeater jammers. Using the multicarrier nature of orthogonal frequency-division multiplexing to encode wide instantaneous bandwidth pulses we propose a novel digital phased array architecture which mitigates dispersion effects experienced when the array main beam is electronically steered off broadside. The result is the ability to transmit and receive wideband pseudo-random phase coded pulses with a phased array antenna. Simulation results are used to quantify the benefit of the architecture. An overview of digital orthogonal frequency-division multiplexing waveform generation is also provided.