Acoustic Model L-Band Aircraft Antenna Radiation Coverage Questions

The number and location of cavity-blocked T-slot antenna for a specified radiation coverage on F-102 aircraft were optimized using an acoustic airframe model, and a special 0.2 MHz (thickness mode) spherical transducer to model the antenna. The model results were verified using the full-scale electromagnetic field data obtained at 1775 MHz for circular polarization. This technique is inexpensive, easy and quick to implement, and as exact as the match between the radiation patterns of the transducer and the antenna it represents. Computer simulation usually yields approximate results since surface wave, shadow, and multiple scattering effects cannot be incorporated. Similarly high frequency R.F. modeling, when feasible, is sensitive to model surface roughness, and is not suited for studying antenna location effects.