Computer Optimization Of High-efficient, Thin-layered Radar Absorbing Coatings

The Lichtenecher formula is used to culculate the electromagnetic parameters of radar absorbing coatings which are respectively made up of some adhesive and various radar-absorbing ingredients,the reflection loss formula (RLF) applicable to the homogeneous radar absorbing coatings is deduced according to the electromagnetic theory.Accdingly,a radar-absorbing model which is proved reasonable is set up applicable to radar absorbing coatings.On the base,the prediction to performance,the electromagnetic analysis and the optimized designs of RAMs of various thickness,various absorbers and volume percentages are performed by programmed using Basic and C++.According to the radar-absorbing model,the performance of RAMs of various absorber-volume-percentage with various frequency and the radar obsorbing performance of which in various thickness is predicted.According to the radar-absorbing model,the prerequisites of microwave electromagnetic parameters and the border curves for a single-layer homogeneous absorbing coating backed by a perfectly conducting plate to produce zero specular reflection are obtained by the steffensen speedup approach to solve the complex transcendental equation. The numerical simulation equations of the border curves interm of and as well as the matching rules and thefrequency dependence of microwave electromagnetic parameters of a broad-band homogeneous absorbing coating with a finite value of reflection loss are available.These results pointed out the direction to develop RAMs'.According to the radar-absorbing model,the optimized design of RAMs with thin-layer,light-weight,broadband and strong-absorbingis available by the simple genetic algorithms,which can effectively conduct the research work of RAMs to the detail.Small but completely,the electromagnetic parameter's databases of RAMs that based on actual microwave absorbers have been set up,the object function has been constructed which conform to the involved goals,the adaptive coding measure is taken which extends the coding length dynamically adapting to the condition of the number of actual absorbers or the precision of thickness and absorber-volume-percentage,the decoding technique is initiated which satisfies light-weight and strong-absorbing as well as thin-layer and broadband by adopting of tracing variable restricting conditions dynamically to control total thickness.When decoding,the variable restricting conditions of thickness are dynamically traced,so gain the radar absorbing coatings of light-weight multiple-layer single-ingredient. Similary,of thickness and absorber-volume-percentage, of light-weight multiple-layer multiple-ingredient.Also,the RAMs'demand to radar-absorb performance as frequency is met making use of the penalty function. In a word,the optimized design of RAMs with thin-layer,light-weight,broadband and strong-absorbing is available taking involved measure.