Accession Number:

ADB006808

Title:

Effects of an Irregular Ionosphere on L-Band Radar System

Descriptive Note:

Air Force surveys in geophysics

Corporate Author:

AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA

Personal Author(s):

• Horowitz, Samuel
• Elkins, Terence J.

Report Date:

1975-07-25

Pagination or Media Count:

31.0

Abstract:

The change in apparent range between an L-Band Radar System and a high flying target introduced by a traveling ionospheric disturbance TID is calculated. Using an ambient Chapman electron density profile perturbated by a realistic TID model, the excess propagation time delay is determined by the use of ray-tracing techniques. For a fixed frequency, the variable component of group delay due to these irregularities is dependent on the direction of TID travel relative to the propagation path and the elevation angle. Numerical results for a typical case are represented.

Descriptors:

• *IONOSPHERIC DISTURBANCES
• *RADAR
• ELECTRON DENSITY
• ERRORS
• L BAND
• MODELS
• PROPAGATION
• RAY TRACING
• REFLECTION
• TIME

Subject Categories:

• Atmospheric Physics
• Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE