March 1970 | NTIA Technical Memo ERL TM ITS 233
Instrumentation for observing HF sea scatter
James M. Watts
Abstract: This paper describes instrumentation for recording digitally the relative phase and amplitude of MF and HF radio signals backscattered from ocean waves. Eight stepped frequencies, two spaced receiving antennas, and four different ranges are used. The coherent system allows spectra and correlations to be calculated by a general purpose computer.
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