摘要
基于物理光学法(PO)研究了三角形三面角反射器(TTCR)加工公差对其单站雷达散射截面(RCS)的影响。验证了PO应用于本文中的角反射器RCS计算的可靠性。然后在存在角度公差和不平整度公差两种情况下,用PO分别得到了在一定频段内的单站RCS减缩量与公差量及计算频率的关系曲线,联系工程实际进行分析讨论,指出可以借助线性拟合来估算较高雷达工作频率下单站RCS的近似减缩量。研究表明,在实际工程中,角度公差对TTCR的RCS影响是比较小的,而不平整度公差对其影响则较大。
This paper focuses on the effects of machining tolerance on monostatic RCS of triangular trihedral corner reflectors （TTCR） by using Physical Optics （PO） method. The reliability of PO for cal- culations in this study is verified firstly. Then, in two typical cases of existing angle tolerance and rough- ness tolerance, the curves of RCS reduction versus tolerance quantities as well as calculation frequencies are provided based on PO in certain frequency bands, Further discussion is performed on them according to the facts in projects. It is pointed out that in higher radar frequencies, the approximate monostatic RCS reductions can be obtained with linear fit technique. The analysis indicates that, in practice, the effects on RCS of TTCR caused by angle tolerance are slighter than the effects caused by roughness tolerance.
出处
《航空兵器》
2006年第4期24-27,共4页
Aero Weaponry
