论文部分内容阅读
Stealth technology plays an important role in mode military conflicts, especially when used in fighter jets. Since airfoil structures have a leading edge, inlet, and surface bulge that are easily detected by radar, it is nec-essary to study the stealth of these structures. In this study, we investigate structures coated with radionuclides to generate plasma. Using simulation and calculation meth-ods, the attenuation of 0.1–10 GHz electromagnetic waves propagating in plasma was studied. The results showed that the attenuation of low-frequency electromagnetic waves is greater than that of high-frequency electromagnetic waves. The attenuation of 0.1–1 GHz electromagnetic waves is found to be less than-2.7 dB,-3.0 dB, and-15.6 dB at the airfoil leading edge, inlet, and surface bulge struc-tures, respectively. We also found that the attenuation of electromagnetic waves with 0°-incidence is greater than that of waves with 10°, 20°, and 30° incidence angles. Additionally, the attenuation of electromagnetic waves decreases gradually as the incident angle increases.