Homework Assignment for Lecture 3


Go to http://www.trimble.com/gps/ and read the sections on "Differential GPS, Why do we need it, How does DGPS work, Correction Factors, and Post Processing GPS", then answer the following questions in the space provided. Be sure to submit your answers after you finish and keep a copy for your files.



How close do two receivers have to be to carry out accurate DGPS?

How does a reference receiver measure errors?

What do error transmissions include?

What is post processing DGPS?

How are error corrections transmitted in real time?

What common errors can't DGPS correct?

What kind of accuracy can DGPS provide?

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