文章摘要
王博,陈楚舒,马学亮,朱鹏羽.基于对数稀布阵的FDA MIMO干扰抑制[J].空军工程大学学报:自然科学版,2021,22(5):37-42
基于对数稀布阵的FDA MIMO干扰抑制
Research on FDA MIMO Interference Suppression Based on Logarithmic Sparse Array
  
DOI:
中文关键词: 对数稀布阵列  FDA MIMO  RCB算法  干扰抑制  方向图
英文关键词: logarithmic sparse array  FDA MIMO  RCB algorithm  interference suppression  beam pattern
基金项目:国家自然科学基金(62001506)
作者单位
王博,陈楚舒,马学亮,朱鹏羽 1.95972部队, 甘肃酒泉, 735300
2.空军工程大学防空反导学院, 西安, 710051 
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中文摘要:
      波形分集阵列雷达作为一种将频率分集阵列与多输入多输出结构相结合的雷达新体制,在主瓣干扰抑制领域具有极大的应用前景。针对基于对数稀布阵的FDA MIMO随队干扰抑制方法展开分析。首先将对数稀布阵引入FDA MIMO体制,通过采用非线性频控函数改进基本FDA“S型”波束图带来的多极值问题;然后通过RCB算法修正随队干扰抑制过程中出现的导向矢量失配问题;最后,仿真验证了当目标与干扰在距离维可分但角度维较为接近时,该方法可在保持主瓣增益的同时实现对干扰的有效置零,从而为随队干扰的有效抑制提供了新的思路。
英文摘要:
      Being a new radar system in which frequency diverse array (FDA) combines with multiple input multiple output (MIMO) structure, the waveform diverse array radar has great application prospects in the field of main lobe interference suppression. In this paper, the FDA MIMO team interference suppression method based on logarithmic sparse array is analyzed. Firstly, the logarithmic sparse array is introduced into FDA MIMO system, and then the multi main lobe problem caused by the basic FDA “s” beam pattern is improved by using nonlinear frequency offset, and then, RCB algorithm is used to correct the steering vector mismatch in the process of interference suppression. Finally, the simulation results show that when the target and the jamming are separable in the range dimension but close in the angle dimension, the proposed method can achieve the effective null of the jamming while maintaining the main lobe gain, providing a new idea for the effective suppression of team interference.
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