【摘要】 以时域有限差分法(FDTD)计算了不同后掠角的后掠翼和三角翼的雷达散射截面(RCS),并对其分布情况进行了分析;计算了不同后掠角的后掠翼和三角翼在多个频段的RCS,并按照不同的威胁判断求出平均值,得出RCS随频率的变化情况。通过分析RCS随方位和频率的变化情况,研究了外形隐身技术运用的一般原则,并探讨了吸波材料所需的最佳吸收频率和涂覆位置。通过对简化情况的分析,对雷达隐身技术运用的一般原则进行了讨论,对于实际的复杂工程实践有重要的参考价值。更多还原

【Abstract】 Different sweepback sweepback-wing and triangle-wing′s radar cross section(RCS)are computed with finite difference time domain(FDTD),and the profiles for the RCS are analyzed.Different sweepback-wing and trianglewing′s RCS in a lot of wave bands are computed,and the variety of RCS when frequency changes is obtained according to the mean value for different dangerous region.The principle of the shape-stealth technology is investigated by analyzing the RCS profiles in situation and frequency.The best-absorbing frequency and place for using absorbing material are discussed.The principia of radar stealth are discussed by predigested instance,and may do some help in complex engineering practice.更多还原