Short-distance Attenuation of Electromagnetic Waves in Rainfall Environment

With the continuous innovation of radar technology, both civilian and military radar shave more and more stringent requirements for accuracy in complex environments. Different from the previous research on long-distance electromagnetic wave propagation in rainfall environment, this paper mainly focuses on the attenuation of electromagnetic waves in the process of short-distance propagation. With the help of electromagnetic simulation software, a simulation model is established according to the precipitation of stratiform clouds in Henan Province to simulate the short-distance propagation process of electromagnetic waves in the P-band, and the electromagnetic wave attenuation is reflected by calculating the difference between the electric field energy before and after the path. The results show that in the case of short distance propagation in rainfall environment, at the same distance, with the increase of frequency, the attenuation of electromagnetic wave is also increasing, which is the same trend as that in the case of long distance propagation, and its attenuation can not be ignored under the conditions of precision guidance.