Accession Number:

ADA071474

Title:

Swept Frequency Scattering Measurements of Aircraft.

Descriptive Note:

Interim rept.,

Corporate Author:

OHIO STATE UNIV COLUMBUS ELECTROSCIENCE LAB

Personal Author(s):

• Shubert,K. A.
• Moffatt,D. L.

Report Date:

1979-05-01

Pagination or Media Count:

126.0

Abstract:

Measured swept frequency complex scattering data are presented for six 172 scale models of aircraft and one model of a typical pencil or aerospace vehicle-type target with various vertical stabilizer and simple cavity attachments. The measured data span the model frequency bands 2.2 to 4.0 GHz andor 4.0 to 7.6 GHz. The measured data are predominantly for vertical polarization perpendicular to a horizontal plane containing the wings and fuselage of the aircraft at selected sparse aspects. The measurement system, which utilizes somewhat unique background subtraction techniques, has a bistatic angle of either 30 degrees most targets or eight degrees a few pencil-type target orientations. Synthetic pulse response waveforms only pulse envelopes are shown are generated from the measured spectral data. Features of both the spectral and temporal responses are used to extrapolate the potential of substructure target features such as tail stabilizers and cavities in prediction-correlation type identification schemes. Author

Descriptors:

• *AIRCRAFT
• *TARGET RECOGNITION
• *ELECTROMAGNETIC SCATTERING
• *SWEEP FREQUENCY TECHNIQUES
• SCALE MODELS
• TARGET SIGNATURES
• RESONANT FREQUENCY
• AIRFRAMES
• CAVITY RESONATORS
• BISTATIC RADAR
• SUPERHIGH FREQUENCY
• SWEEP FREQUENCY RADAR

Subject Categories:

• Active and Passive Radar Detection and Equipment
• Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE