Modeling of Camouflage Netting for Radar Cross Section Analysis
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
Pagination or Media Count:
An analytical model for radar cross section reduction by the US armys currently deployed camouflage netting system was developed. This model was needed to assist in the evaluation of developmental camouflage materials through prediction of radar cross section reduction. With this model, parameters measurable in the laboratory can be used to predict the performance of fabricated netting. Using a physical optics approach to modeling, the net is modeled as a layer of lossy dielectric material. The layer is assumed to be a continuous, locally flat, and locally homogeneous medium. Relevant equations are then developed to predict radar cross section reduction. The constitutive parameters of interest are the complex permittivity and permeability and the effective thickness of the net. Methods of obtaining or approximating these values are discussed. The development provides a prediction equation using a dyadic description of the electric fields on either side of the nets, developed from the constitutive parameters, from which a prediction of radar cross section reduction follows. Values for constitutive parameters are assumed to generate data for comparative purposes. Using this model with the measured complex constitutive parameters of the net, an anticipated reduction of RCS can be predicted.
- Radar Countermeasures
- Active and Passive Radar Detection and Equipment
- Electricity and Magnetism