Accession Number:

AD0724994

Title:

The Effect of the Plasma Sheath Surrounding a Flight Vehicle on the Effective Range of Radar,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1971-02-05

Pagination or Media Count:

9.0

Abstract:

Derivation of expressions describing the effects of a plasma sheath, caused by an ionizing shock wave at supersonic velocities, on the effective range of an onboard radar installation. The plasma sheath is analyzed as a lossy transmission line and as a receiver with a given noise temperature. Equations are obtained for the reduction in the SNR due to the noise emission of the plasma, the reduced power transmitted through the plasma, and the reduced effective antenna surface. A numerical example given for a flight vehicle moving 3.5 kmsec at an altitude of 60 km shows that the radar range can be reduced by a factor of 3.5. Author

Subject Categories:

  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE