Log in
  
GPS World Author

Martin Unwin


Article
Pulling in Wideband   June 1, 2009
By: Martin Unwin,Paul Blunt,Philip Jales,Ruediger M. Weiler,Stephen Hodgart

A direct-conversion receiver architecture meets the challenges of wideband GNSS signals, such as Galileo's E5 signal with bandwidth greater than 50 MHz.

Article
Meet GIOVE-A   May 1, 2007
By: Andrew Bradford,Elizabeth Rooney,Giuliano Gatti,Giuseppe Mandorlo,Maktar Malik,Martin Unwin,Philip Davies,Valter Alpe

Galileo satellites must operate in a harsh environment more than 20,000 kilometers above the Earth, through the intense Van Allen electron belt. Key team members describe the design, manufacture, launch, and commissioning of the demonstration satellite GIOVE-A.

Article
Meet GIOVE-A   May 1, 2007
By: Andrew Bradford,Elizabeth Rooney,Giuliano Gatti,Giuseppe Mandorlo,Maktar Malik,Martin Unwin,Philip Davies,Valter Alpe

Galileo satellites must operate in a harsh environment more than 20,000 kilometers above the Earth, through the intense Van Allen electron belt. Key team members describe the design, manufacture, launch, and commissioning of the demonstration satellite GIOVE-A.