Accession Number:

AD0523292

Title:

IVORY CORAL Applications and Diagnostics

Descriptive Note:

Interim technical rept. Jan-Jul 1971

Corporate Author:

AERONOMY CORP CHAMPAIGN IL

Personal Author(s):

Report Date:

1971-07-01

Pagination or Media Count:

44.0

Abstract:

The purpose of this section is to discuss the outstanding features of the phenomena of artificial spread F ASF and wide-band attenuation WBA and their relevance to defense applications. The ionosphere is a generally homogeneous, horizontally stratified plasma with relatively predictable characteristics. Its relative horizontal stratification permits its use for long-range communications and DF and OHD. Its relative uniformity permits radar and space telemetry systems to look through it without degradation. On the other hand, this uniformity prevents its use for backscatter communications except under special circumstances e.g., meteors which require large antennas. The potential applications of IVORY CORAL arises from the reversing of all these previous properties of the ionosphere. ASF destroys the uniformity and horizontal stratification of the ionosphere, and creates irregularities probably field aligned that can sustain backscatter at HF. This effect is initiated with substantial heating transmitter powers, but so rapidly that only 10 to the 6th power Joules are involved for an effect that extends over hundreds of km.

Subject Categories:

  • Atmospheric Physics
  • Antimissile Defense Systems
  • Radiofrequency Wave Propagation
  • Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE