Estimating the Radar Cross Section of a Cavity

The radar cross section (RCS) characteristics of cavities are considered. Experimental data on simplified models obtained in 1966, but which heretofore have not received very wide dissemination, are reviewed and the results are compared with predictions based on a simplified (and semiempirical) theory for the end-on aspect case combined with a ray tracing procedure for other aspects. This theoretical method for estimation purposes is seen to provide quite adequate results.     

The Practical Problem of Radar Cross-Section Analysis

Despite recent advances in computational and experimental technology, many approximate methods are of considerable practical value in the field of radar cross-section (RCS) analysis. This is true particularly where time and/or funding is limited. Here we shall examine RCS data both in the high-frequency and in the lowfrequency ranges to illustrate some of the advantages which accrue from the application of more economical approximate techniques.