Control of a Cossor CSP1250 Ionospheric Simulator in an Automated HF Test Bed
Abstract
The development of modems, scramblers, frequency hopping units etc, for HF channel operation requires repeatable and comparative tests to be carried out under typical conditions. By using HF channel ionospheric simulators these tests can be carried out more cost-effectively and conveniently without the need for the relatively expensive live-link tests which would otherwise be necessary. Such simulators not only provide repeatable HF channel conditions, they also permit some control of the link parameters - an aspect not readily achievable with 'live' circuits. The Automated high frequency Test Bed currently under development at the Electronics Research Laboratory (ERL) uses a Cossor CSP1250 Ionospheric Simulator. The Test Bed also incorporates transmit and receiver modems, data error analysers (which generate and monitor a pseudo-random bit sequence, and a Pilot Tone Sounder (which performs bit-error-rate analysis of the received data). A functional diagram of the ERL Automated Test Bed is provided in Figure 1 overleaf. Keywords: Computer simulation, Cossor CSP1250, Ionosphere, High frequency test beds, Communications, Radiofrequency wave propagation.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1990
- Accession Number
- ADA223446
Entities
People
- Patricia L. Slingsby