HF Systems Test for the SURTASS Operation of February 1981
NAVAL RESEARCH LAB WASHINGTON DC
Pagination or Media Count:
The objective of this document is to discuss preliminary results of the SURTASS HF systems test conducted in the Atlantic during February 1981 from the point of view of the condition of the HF propagation channels as determined by the Barry oblique sounder equipment ANTRQ-35. The initial analysis indicates that the primary difficulty in maintaining a high reliability HF circuit with the requisite data rate can be attributed to inappropriate frequency selection arising from procedural difficulties, a general lack of anticipation of the optimum frequencies as dictated by ionospheric channel characteristics and possible interference effects. Channel evaluation as performed by NRL personnel using sounder equipment suggests that reliability may have been improved significantly had available information been entered directly into the frequency management process.
- Radiofrequency Wave Propagation
- Radio Communications