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Volume 49 - September 1996

Contents

Page 3 of 4

Forum

  • An Algorithm for a Real-Time Detection of Encounter Situations

  • Damir Zec
  • Published online by Cambridge University Press:
    21 October 2009, pp. 121-126
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  • ‘Whither Astro?’

  • Mike Pepperday
  • Published online by Cambridge University Press:
    21 October 2009, pp. 437-440
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  • The Editor writes

  • Published online by Cambridge University Press:
    21 October 2009, p. 126
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Research Article

  • Relationship Between Satellite Elevation and Precision of GPS Code Observations

  • Xin Xiang Jin, Cees D. de Jong
  • Published online by Cambridge University Press:
    21 October 2009, pp. 253-265

  • First, a brief description is given of an algorithm for the generation of carrier-adjusted differential corrections. Next, the relationship between satellite elevation and the precision of GPS code observations is investigated, on the basis of data collected by TurboRogue SNR-8000, Trimble 4000 SSE and Trimble 4000 SST receivers. It is concluded that the precision of code observations decreases with decreasing elevation, particularly at low elevation and that the relationship can quite well be modelled by an exponential function. For different types of receivers and different types of code observables, this relationship may not be the same.

Forum

  • Observed Effect of Air-Sea Temperature Differences on Marine Sextant Altitudes

  • Mark Dixon
  • Published online by Cambridge University Press:
    21 October 2009, pp. 440-443
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Front matter

  • NAV volume 49 issue 1 Cover and Front matter

  • Published online by Cambridge University Press:
    21 October 2009, pp. f1-f2
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Forum

  • ‘A Voyage of Navigational Investigation’

  • Michael Richey
  • Published online by Cambridge University Press:
    21 October 2009, p. 443
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  • ‘Conflicts in Inshore Waters’

  • Thomas A. Riordan
  • Published online by Cambridge University Press:
    21 October 2009, pp. 266-268
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  • ‘Columbus's Method of Determining Longitude : An Analytical View’

  • Arne B. Molander
  • Published online by Cambridge University Press:
    21 October 2009, pp. 444-452
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Back matter

  • NAV volume 49 issue 1 Cover and Back matter

  • Published online by Cambridge University Press:
    21 October 2009, pp. b1-b4
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Forum

  • ‘Conflicts in Inshore Waters’

  • A. W. Jones
  • Published online by Cambridge University Press:
    21 October 2009, p. 268
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Reviews

Forum

  • ‘Conflicts in Inshore Waters’

  • Tim Bartlett, Dag Pike
  • Published online by Cambridge University Press:
    21 October 2009, pp. 268-269
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  • Editor's Note

  • Published online by Cambridge University Press:
    21 October 2009, p. 269
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Reviews

Forum

  • Whither Astro?

  • John B. Parker
  • Published online by Cambridge University Press:
    21 October 2009, pp. 270-274
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Reviews

Index

Forum

  • The Nautical Almanac and the changing role of HM Nautical Almanac Office

  • Bernard Yallop
  • Published online by Cambridge University Press:
    21 October 2009, pp. 274-277
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  • Editor's Note

  • Published online by Cambridge University Press:
    21 October 2009, p. 277
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Page 3 of 4