Understanding the Navstar

Two complete new chapters have been introduced. The first one, Chapter 16, amplifies the many rich interactions between Geographie Information Systems (GIS) and the Navstar CPS. The words and pietures in this new chapter foeus on the powerful eleetronie mapmaking techniques that rely on Navstar navigation together with the many benefits stemming from the full-eolored "layered" maps now being produeed. Chapter 17, which is also new, deals with Intelligent Vehicle Highway Systems (lVHS). Navstar navigation techniques form the hidden backbone of most of the new electronic teehnologies that are helping to make America's traffic f10w more smoothly. Chapter 17 c10ses with narrative descriptions of three interesting IVHS projects: emergency tow-truck dispatching, optimum ambulance-routing, and the in-car traffie reports now being beamed into family cars cruising along Ameriea's major traffic arteries. Many helpful individuals contributed toward the successful completion of Under standing the Navstar. My lovely wife, Cyndy, was unquestionably the most beneficial contributor. Her affectionate comments and her broad-ranging support were greatly appreciated. So was her diligent and uncomplaining work in word-process ing the many drafts of the final manuseript. The artists, Lloyd and lInka Wing and Anthony and Dianne Vega, were also enormously helpful in providing quality figures and tables on schedule. They have become true masters of the Macintosh computer with its many beils and whistles. Preparing a book for publication is a time-consuming, invigorating task. I hope you enjoy reading it as much as I enjoyed putting it together for your use.

Autorentext
Tom Logsdon, a retired senior member of the technical staff at Rockwell International, teaches three-day courses on orbital mechanics and the Navstar GPS to enthusiastic professionals all over the world. A prolific author and editor, he has written more than 25 books on space technology, computer science, robotics, and knowledge-based problem-solving techniques.

Zusammenfassung
The Navstar Global Positioning System (GPS) is financed by military dollars and the navigation signals it broadcasts are available free of charge to anyone, anywhere.

Inhalt
1 The Science of Navigation.- 2 The Navstar GPS.- 3 Performance Comparisons for Today's Radionavigation Systems.- 4 User-set Architecture.- 5 User-set Performance.- 6 Differential Navigation and Pseudo-satellites.- 7 Interferometry Techniques.- 8 Integrated Navigation Systems.- 9 Interoperability with Other Navigation Systems.- 10 The Navstar Satellites.- 11 Precise Time Synchronization.- 12 Digital Avionics and Air Traffic Control.- 13 Geodetic Surveying and Satellite Positioning.- 14 Military Applications.- 15 Civil Applications.- 16 Geographic Information Systems.- 17 Intelligent Vehicle Highway Systems.- Appendix A Additional Sources of Information.- GPS Information Centers.- The U.S. Coast Guard's Information Center.- The Computer Bulletin Board at Holloman Air Force Base.- Global Satellite Software's Computer Bulletin Board.- Associated Consulting's Bulletin Board.- The Glonass Computer Bulletin Board.- Precise GPS Orbit Information.- U.S. Army Electronic Proving Ground GPS Range Instrumentation System.- GPS Information with a European Flavor.- The United Kingdom.- The Netherlands.- Norway.- GPS Clock Behavior.- Information for Surveyors.- GPS World Magazine.- The Federal Radionavigation Plan.- Appendix B Today's Global Family of User-set Makers.- Domestic User-set Makers.- Foreign User-set Makers.- Appendix C Navigation-related Clubs and Organizations.- Appendix D Navigation-related Magazines and Periodicals.