Accession Number:

ADA142044

Title:

Medium Speed Digital Data Transmission Tests over a 1900 km HF (High Frequency) Radio Link Using Doppler Spread of a CW (Continuous Wave) Test Transmission as a Real Time Frequency Management Technique.

Descriptive Note:

Technical memo.,

Corporate Author:

ADVANCED ENGINEERING LAB ADELAIDE (AUSTRALIA)

Personal Author(s):

• Tilbrook,J. R.

Report Date:

1983-03-01

Pagination or Media Count:

28.0

Abstract:

This document describes tests conducted jointly by the Advanced Engineering Laboratory AEL and the Electronics Research Laboratory ERL at the Defense Research Centre Salisbury DRCS, in December 1981 which attempted to real-time frequency manage HF radio medium speed digital data transmissions between Townsville and DRCS, a distance of approximately 1900 km. Instrumentation which monitored the Doppler spectra of a CW stepped frequency sounder transmission originating in Townsville was used as an aid in selecting the optimum operating frequency. The work forms part of the HF Enhancement Study being carried out by AEL and ERL and is sponsored by DGJCE. Author

Descriptors:

• *RADIO LINKS
• *DOPPLER EFFECT
• *SOUNDING
• FREQUENCY
• HIGH FREQUENCY
• DEFENSE SYSTEMS
• REAL TIME
• CONTINUOUS WAVES
• AUGMENTATION
• RESEARCH FACILITIES
• TRANSMITTANCE
• SPECTRA
• ENGINEERING
• MILITARY RESEARCH
• LABORATORIES

Subject Categories:

• Radiofrequency Wave Propagation
• Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE