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  1. Multiresolution acquisition scheme for the physical layer design of a direct sequence spread spectrum transequatorial HF ionospheric data link
  2. Vertical and oblique ionospheric soundings performance comparison over the 12,760 km transequatorial HF link between Antarctica and Spain
  3. Polarization diversity in a long-haul transequatorial HF link from Antarctica to Spain
  4. Digital transmission techniques for a long haul HF link: DSSS versus OFDM