GPS and ground speed

On Jul 28, 9:34*pm, Gezellig wrote:

http://www.ars.usda.gov/research/publications/Publications.htm?seq_no...


Thanks. Interesting read, especially this intriguing part: "...the
direction of travel had an effect on the type of latency. When
traveling in a north or south direction, the GPS position of the
aircraft was in front of the actual aircraft position, but when
traveling in an east or west direction the GPS position of the
aircraft was behind its actual position..."!

Ramapriya