摘要
针对阵列口径受限下低频段非协同探测系统空间分辨率不足的问题,把综合孔径辐射探测理论引入非协同探测领域,提出了一种基于综合孔径的非协同探测系统高分辨测向算法。建立了基于综合孔径阵列的非协同探测系统测向模型,通过对距离、多普勒二维相关域数据的反演实现阵列口径等效翻倍的效果,提升对目标空间分辨能力。通过仿真分析,相较于传统数字波束形成(Digital Beam Forming,DBF),所提方法可使阵列3 dB分辨能力提高近1倍,同时提高了对探测目标的定位精度。通过对民航目标探测的实测数据分析,验证了所提算法的有效性,具有工程应用价值。
In response to the problem of insufficient spatial resolution in low-frequency non-cooperative detection systems under limited array aperture,the comprehensive aperture radiation detection theory is introduced into the field of non-cooperative detection,and a high-resolution direction finding algorithm for non-cooperative detection systems based on comprehensive aperture is proposed.A non-cooperative detection system direction finding model based on synthetic aperture array is established,which achieves the equivalent doubling of array aperture through inversion of distance and Doppler two-dimensional correlation domain data,and improves the spatial resolution of targets.Through simulation analysis,compared to traditional digital beam forming(DBF),the proposed method can increase the array's 3 dB resolution by nearly twice,while also improving the positioning accuracy of the detection target.The effectiveness of the proposed algorithm is verified through the analysis of actual data from civil aviation target detection,and it has engineering application value.
作者
李世文
赵子龙
李思伟
高昭昭
LI Shiwen;ZHAO Zilong;LI Siwei;GAO Zhaozhao(Southwest China Research Institute of Electronic Equipment,Chengdu 610036,China;National Key Laboratory of Electromagnetic Space Security,Chengdu 610036,China)
出处
《电子信息对抗技术》
2025年第5期66-71,共6页
Electronic Information Warfare Technology
关键词
非协同探测
综合孔径
高分辨率测向
被动相干定位
non-cooperative detection
synthetic aperture
high resolution direction finding
passive coherent location
