基于雷达成像的地面停留隐身飞机探测

Detectability Analysis of Stealth Aircraft Stopping on the Ground Based on SAR Imaging Simulation

隐身飞机的电磁散射特性和雷达成像是反隐身的重要研究内容。国内对隐身飞机散射特性的研究基本集中在雷达散射截面(RCS)的计算和分析方面,该文则侧重于对隐身飞机的合成孔径雷达(SAR)成像进行仿真和分析。RCS分析侧重于探测在空中飞行的隐身飞机,而SAR成像可用于探测停留在地面的隐身飞机。以F-22飞机为例,进行隐身飞机的SAR成像仿真,研究结果表明,目前美国的隐身飞机并不是全角度隐身的,用机载SAR成像雷达可以发现停留在机场上的隐身飞机。

The electromagnetic scattering characteristics and radar imaging analysis of stealth aircrafts are the important contents of anti-stealth research. Domestic research of scattering characteristics of stealth aircrafts is mainly focused on the simulation and analysis of radar cross-section（RCS）, while the research in this paper is mainly focused on the simulation and analysis of SAR imaging of stealth aircrafts. Analysis of RCS is suitable for the exploration of stealth aircrafts flying in air, while SAR imaging is suitable for the exploration of stealth aircrafts stopping on the airfield. The F-22 is taken as an example of stealth aircraft in SAR simulation in this paper. It is shown by the research results that the present stealth aircraft in USA can not be well in stealth globally in all angle, and the stealth aircrafts stopping on the airfield can be explored by the airborne SAR-imaging radar.