Homework Assignment for Lecture 1


Go to and read the sections on "Why GPS" and "What is GPS" in the Trimble website, 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.



List the disadvantages of other kinds of navigation systems.


Why did the DoD develop GPS?


How much did it cost to build the GPS?


What is the planned life span of a NAVSTAR satellite?


Why are ground stations needed?


What is the purpose of differential GPS?


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