Change Log

Fast-track revision published on 21 June 2007

Global description:

Two sections near the end were added; one on Augmentation systems, and one on Global Navigation Systems. General updating: I have updated the text in quite a few places, such as eliminating the word “recently” which is no longer really recently. Also the Conclusion has been appropriately reworded. Added one reference [25Jump To The Next Citation Point]. Living Reviews applied its current layout to this revision.

Changes in detail:

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Update Corrected sign of the last term.
Update Sentence added.
Update Added reference to Figure 4View Image.
Update WGS-84 (837) changed to WGS-84 (873).
Update Section added.
Update Section added.