Accession Number : AD0875889

Title :   Electromagnetic Scattering Concepts Applied to the Detection of Targets Near the Ground.

Descriptive Note : Doctoral thesis,

Corporate Author : OHIO STATE UNIV COLUMBUS ELECTROSCIENCE LAB

Personal Author(s) : Hill, David A.

Report Date : 04 SEP 1970

Pagination or Media Count : 119

Abstract : Problems related to the detection of targets in the presence of clutter and ground are investigated. The two basic problems are the change in the target response due to the presence of the ground and the recognition of the target response when contaminated with clutter return. The transient fields of short dipoles in the presence of a dielectric half-space are examined and exact closed-form solutions are obtained for some particular source and observation points. The solution for the case of the source and observation points coincident is used to determine the interaction between a dipole source and the interface and the resultant dipole impedance change. The same solutions are used to compute the change in the dipole modes of scatterers due to the presence of a half-space, particularly the shift in the s-plane poles of the target. Results are presented for both dielectric and perfectly conducting half-spaces. (Author)

Descriptors :   (*SURFACE TARGETS, DETECTION), (*RADAR CLUTTER, SURFACE TARGETS), MAGNETIC FIELDS, ELECTRIC FIELDS, BACKSCATTERING, TRANSIENTS, TARGET DISCRIMINATION, DIFFERENCE EQUATIONS, THEORY, THESES.

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE