Accession Number:

ADA141237

Title:

A Statistical Channel Model for Adaptive HF Communications via a Severely Disturbed Ionosphere

Descriptive Note:

In-house rept.

Corporate Author:

ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY

Personal Author(s):

Report Date:

1983-12-01

Pagination or Media Count:

30.0

Abstract:

Motivation for the resurgence of interest in improving HF communication is presented. This includes the continued widespread use of the HF band, and the new technology that now makes it feasible to vastly improve the historically poor quality of communications in this band. Non-conventional HF techniques or systems are classified into four general categories according to the technical specialties that spawned them. These categories are Adaptive Frequency Management. Digital Waveform Processing, Networking, and Adaptive Antennas. A 15 parameter channel model is presented which forms the basis for the on-going RADC measurement program. These parameters address the dispersion and dynamics of time, frequency and spatial distortion imposed by the skywave channel. Next, measurement techniques are evaluated for characterization of these parameters, resulting in the selection of a six station Arctic network of wideband pulse compression matched filter channel probes. A description of waveform generation, receiver signal processing and the program plans and schedule are presented.

Subject Categories:

  • Atmospheric Physics
  • Radiofrequency Wave Propagation
  • Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE