| 摘要: |
| 提出了将契比雪夫加权应用于被动合成孔径处理算法。被动合成孔径技术对小孔径
基阵沿直线运动接收到的信号进行合成处理，从而达到虚拟大孔径基阵方位分辨力效果。将
契比雪夫加权应用于线阵合成孔径前后波束图的指向性研究，对主瓣宽度变化予以合理解释
。理论分析结合仿真验证表明，被动合成孔径处理算法应用契比雪夫加权可以在给定的旁瓣
高
度要求下获得等旁瓣级，等旁瓣级下可提高对弱目标信号的检测分辨能力。 |
| 关键词: 被动合成孔径 契比雪夫加权 主瓣宽度 旁瓣级；弱信号检测 |
| DOI： |
|
| 基金项目:中国科学院国防创新基金项目资助课题 |
|
| Study on application of passive synthetic aperture processing algorithm in Chebyshev weighting |
| ZHAO Shan,SUN Chang-yu,CHEN Xin-hua |
| () |
| Abstract: |
| Passive synthetic aperture processing algorithm application in Chebyshe
v weighting is proposed. The technology of passive synthetically aperture is for
syn
thetically processing the received signal of small aperture array along the line
ar
motion, in order to achieve the orientation resolution effects of the virtual la
rge aperture array. Based on the use of Chebyshew weighting for the linear array
synthetic aperture directional beam pattern, the mainlobe width change is ju
stified. Through theoretical analysis and simulation on passive synthetic apert
ure processing algorithm application in Chebyshev weighting, the equivalent side
lobe level in condition of fixed sidelobe height can be attained, and it is appa
rent to improve the ability to distinguish the weak target signal under equivale
nt sidelobe level. |
| Key words: passive synthetic aperture Chebyshev weighting mainlobe width sidelobe level wea
k signal detection |
