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Simulation of absorption and dispersion processes of electromagnetic waves within the microwave frequency range in dispersed media based on wave optics
Engineering Education # 09, September 2013
DOI: 10.7463/0913.0623173
This paper describes the interaction of artificial disperse systems with electromagnetic radiation within the microwave frequency range, which is based on the conditional division into sub-bands according to the character of interaction. For one of the sub-bands, a mathematical model was proposed that in the approximation of wave optics allows one to calculate the reflection and absorption characteristics of the system. Results of the calculations were also presented. A possibility of creating a dispersed system operating within the frequency range from 1 GHz (30 cm) up to 120 GHz (2.5 mm) was demonstrated. Moreover, its sizes (14 m) are comparable to the size of an object of military equipment, and the mass of the dispersed phase is only 3.7 kg.
Accuracy evaluation of modern computer programs for calculating objects’ effective echoing area
Engineering Education # 09, September 2013
DOI: 10.7463/0913.0623058
A problem of computational accuracy of objects’ effective echoing area (EEA) using modern software such as CST Microwave Studio and «Analysis of radiolocation characteristics of complex shaped objects» developed in Bauman Moscow State University was considered. The authors tried to formalize accuracy evaluation procedure for these programs using characterization factors and mean-root-square errors between monostatic angle diagrams of EEA for some objects obtained with a use of the specified software and ones, experimentally measured. It was shown, that software had acceptable accuracy of ±5m2.
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