The scattering behavior for a collection of thousands of linear dipoles at resonance has long been a subject of study for passive electronic countermeasures (ECM) against pertinent threat radar systems. Previously, the echo area of the radar cross section (RCS) of a chaff cloud has been calculated… More

This proposal investigates candidate main rotor blade de-icing systems which offer signature reduction capabilities. In comparison to traditional mechanical boot style de-icing systems, electrical de-icing systems are considered. One such candidate is a novel electrical thin film resistive de-icing… More

Today's high performance anechoic chambers consist of a wall of various feed antennas directed at the object under test. With all of these antennas covering the chamber wall, the anechoic performance of the wall will be impaired by the RCS of the antennas themselves. Current illumination… More

Near-field frequency domain meaasurements of antennas over a planar aperture are commonly used to obtain far-field patterns. This technique has now bben formulation in the time domain, which is very desirable for short pulse signals. An additional benefit, particularly significant for… More

One current automatic target recognition (ATR) approach utilizes synthetic radar data. The success of this approach is highly dependent upon the quality of this synthetic data. It is known that the radar scattering from jet aircraft can have a significant engine contribution. Current numerical… More

The model validation process in radar cross section (RCS) database production is time consuming and labor intensive. Typically, synthetically generated data is compared to measured data, which is considered to be "truth." However, one must acknowledge that time may be waisted trying to refine a… More

Automatic Target Recognition (ATR) for Combat Identification (CID) represents one of the most demanding disciplines in sensor technology facing the United States Air Force today. Central to this process is the development of validated synthetic. Unfortunately, the synthetic database generation… More

The Air Force Research Laboratory (AFRL) desires a method to map Automatic Target Recognition (ATR) performance to signature performance in order to aid database optimization. To better understand the physical mechanisms relating the sensing platform, candidate ATR algorithms, and the classifier… More