GPS World Innovation The Early Years

The Innovation column has appeared in GPS World magazine continuously since the first issue of January/February 1990. The early columns are difficult to find except for those who were fortunate to have had inaugural subscriptions to the magazine. Black and white reprints of the first 15 columns have been scanned into PDF files and are available for download here. Note that there have been many improvements to GPS technology over the intervening years and the information in these early columns must be taken in context. In some cases, corrections and updated information has been supplied as attached comments.

• GPS: A multipurpose system by D. Wells and A. Kleusberg
  January/February 1990, Vol. 1, No. 1, pp. 60-63.


• The limitations of GPS by A. Kleusberg and R.B. Langley
  March/April 1990, Vol. 1, No. 2, pp. 50-52.


• Why is the GPS signal so complex? by R.B. Langley
  May/June 1990, Vol. 1, No. 3, pp. 56-59.


• Electronic charts and GPS by M.J. Casey and P. Kielland
  July/August 1990, Vol. 1, No. 4, pp. 56-59.


• The issue of selective availability by Y. Georgiadou and K.D. Doucet
  September/October 1990, Vol. 1, No. 5, pp. 53-56.


• Comparing GPS and GLONASS by A. Kleusberg
  November/December 1990, Vol. 1, No. 6, pp. 52-54.


• The GPS receiver: An introduction by R.B. Langley
  January 1991, Vol. 2, No. 1, pp. 50-53.


• Precise, real-time dredge positioning by S.R. DeLoach
  February 1991, Vol. 2, No. 2, pp. 43-45.


• The orbits of GPS satellites by R.B. Langley
  March 1991, Vol. 2, No. 3, pp. 50-53.


• Ionospheric effects on GPS by J.A. Klobuchar
  April 1991, Vol. 2, No. 4, pp. 48-51.


• GPS vehicle location and navigation by E.J. Krakiwsky
  May 1991, Vol. 2, No. 5, pp. 50-53.


• Continuous monitoring of crustal deformation by Y. Bock
  June 1991, Vol. 2, No. 6, pp. 40-47.


• The mathematics of GPS by R.B. Langley
  July/August 1991, Vol. 2, No. 7, pp. 45-50.


• GPS in civil aviation by K.D. McDonald
  September 1991, Vol. 2, No. 8, pp. 52-59.


• GPS – satellites of opportunity for ionospheric monitoring by D. Coco
  October 1991, Vol. 2, No. 9, pp. 47-50.