Accession Number:

AD0780433

Title:

Geophysical Aspects of Atmospheric Refraction

Descriptive Note:

Final rept.

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

• Purves, Charles G.

Report Date:

1974-06-07

Pagination or Media Count:

45.0

Abstract:

The purpose of this paper is to discuss some of the geophysical aspects of atmospheric refraction and its effect on radars. Of special concern is the cause-and-effect relationships associated with the trapping of electromagnetic energy into atmospheric duct layers that result in anomalous propagation conditions and extend radar ranges far beyond the normal radar horizon.

Descriptors:

• *ATMOSPHERIC REFRACTION
• *RADAR REFLECTIONS
• FORECASTING
• RADAR SIGNALS
• RADIO WAVES
• REFRACTIVE INDEX

Subject Categories:

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

Distribution Statement:

APPROVED FOR PUBLIC RELEASE