A channel characterization technique for HF communications
José Peñín, José Antônio · Mediterranean Electrotechnical Conference · 1985
A wideband channel sounder to characterize the HF radio channel is described. Based on a pseudorandom sequence technique it allows the measurement of the complex impulsional response of the channel with time and frequency resolutions better than 0.2 ms and 0.05 Hz, good enough figures for low-rate digital transmission systems in the Madrid-Barcelona HF radiolink.