Joke: Car Privileges
Problem: The Global Positioning System (GPS): Control Segment
Cool Link: Open Geospatial Consortium

Joke of the Week: Car Privileges

A mother and father had just given their teenage daughter family-car privileges. On Saturday night she returned home very late from a party.

The next morning, her father went out to the driveway to get the newspaper and came back into the house frowning. At 11:30 AM the girl sleepily walked into the kitchen, and her father asked her, "Sweetheart, what time did you get in last night?"

"Not too late, Dad," she replied nervously.

Dead-panned, her father said, "Then I'll have to talk with the paperboy about putting my paper under the front tire of the car."

Problem: The Global Positioning System (GPS): Control Segment

What is the meaning of selective availability in GPS?

    (A) The deliberate degradation of the GPS signal 
    (B) The encryption of the P code transmissions
    (C) The licensing of all GPS receivers by the federal government
    (D) The shutdown of selected satellites by the control segment

Come back next week for the solution!

This is problem 12(11-7) from the new second edition of 1001 Solved Surveying problems by Jan Van Sickle. Reprinted with permission from 1001 Solved Surveying Problems by Jan Van Sickle (1997, 728 pp., Professional Publications Inc.). For details on this and other FLS exam-prep books, call 800/426-1178 or visit

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Cool Link of the Week: Open Geospatial Consortium

The Open Geospatial Consortium Inc. (OGC) is a non-profit, international, voluntary consensus standards organization that is leading the development of standards for geospatial and location-based services. Through its member-driven consensus programs, OGC works with government, private industry and academia to create open and extensible software application programming interfaces for geographic information systems (GIS) and other mainstream technologies.