电子学报 ›› 2020, Vol. 48 ›› Issue (3): 486-493.DOI: 10.3969/j.issn.0372-2112.2020.03.010

• 学术论文 • 上一篇    下一篇

端射阵机载雷达距离模糊非平稳杂波补偿方法

李永伟, 谢文冲   

  1. 空军预警学院雷达兵器运用工程军队重点实验室, 湖北武汉 430019
  • 收稿日期:2018-11-13 修回日期:2019-09-24 出版日期:2020-03-25 发布日期:2020-03-25
  • 作者简介:李永伟 男,1994年出生于湖南耒阳.2017年获空军预警学院雷达工程专业工学学士学位.现为空军预警学院信息与通信工程专业在读硕士研究生,主要研究方向为空时自适应处理、机载雷达信号处理.E-mail:liywei09@foxmail.com;谢文冲 男,1978年出生于山西运城.2006年获国防科技大学信息与通信工程专业工学博士学位,现为空军预警学院雷达兵器运用工程军队重点实验室副教授、硕士研究生导师.主要研究方向为空时自适应处理、机载雷达信号处理和雷达系统.E-mail:xwc1978@aliyun.com
  • 基金资助:
    国家自然科学基金项目(No.61102169)

A Non-stationary Clutter Spectrum Compensation Method for End-Fire Array Airborne Radar with Range Ambiguity

LI Yong-wei, XIE Wen-chong   

  1. Radar Weapon Application Engineering Military Key Research Laboratory, Air Force Early Warning Academy, Wuhan, Hubei 430019, China
  • Received:2018-11-13 Revised:2019-09-24 Online:2020-03-25 Published:2020-03-25

摘要: 端射阵天线是指波束指向垂直于阵列法线方向的一类特殊雷达天线,由于其具有低剖面和定向辐射特性,因而特别适合用于机载雷达的补盲.由于端射阵通常呈前视放置,因而与传统前视侧射阵机载雷达一样,不可避免地要面临杂波的距离非平稳问题.本文基于端射阵机载雷达杂波谱特性,提出了一种距离模糊下端射阵近程杂波补偿新方法.该方法以最远可检测距离单元为参考单元并增加了动目标约束保护条件,克服了存在距离模糊时基于杂波谱配准(Registration-Based Compensation,RBC)原理的传统补偿方法存在的目标相消以及计算量大的问题;同时针对可能存在的目标约束失配问题,进一步提出了基于虚拟波束的扩展补偿方法.计算机仿真结果验证了本文方法的有效性.

关键词: 端射阵, 距离模糊, 非平稳杂波补偿, 动目标约束, 虚拟波束

Abstract: End-fire array antenna is a kind of special radar antenna with beam pointing perpendicular to the normal direction of the array.Because of its low profile and directional radiation characteristics,it is especially suitable for blind compensation of airborne radar.As end-fire array is usually placed forward-looking,it inevitably faces the problem of non-stationary clutter which just likes traditional forward-look side-fire array.Based on the clutter spectrum characteristics of end-fire array airborne radar,a novel short-range non-stationary clutter compensation method for end-fire array with range ambiguity is proposed in this paper.The farthest detectable range unit is taken as the reference unit and the constraint protection condition is added to the moving target in this method,which overcomes the disadvantage of target cancellation and large computation of the traditional compensation method based on RBC(Registration-Based Compensation) principle with range ambiguity.At the same time,aiming at the problem of the target constraint mismatch,an extended compensation method based on virtual beam is proposed.The computer simulation results verify the effectiveness of the proposed method.

Key words: end-fire array, range ambiguity, non-stationary clutter compensation, moving target constraint, virtual beam

中图分类号: