Since the last edition of this international bestseller, GPS has grown to become part of a larger international context, the Global Navigation Satellite System (GNSS). Both GPS and GNSS technologies are becoming ever more important in the everyday practice of survey and mappers. With "GPS for Land Surveyors, Third Edition", a book written by a land surveyor, for land surveyors, you can stay in the know on the latest GPS techniques, technologies, codes, and signals. What's New to the Third Edition? Sections on Real-Time Network Services, Block IIF, and control segment modernization; GPS code, such as the M-code, L1C, and L2C; An entire chapter dedicated to GNSS; and, Discussion of the Russian GLONASS system, the Chinese Beidou system, and the Japanese QZSS. From fundamental theory to practical application and advanced technologies, the book covers GPS without pages of complicated math. It demonstrates the basics of GPS technology, common hardware, surveying methods, survey design, planning and observation. Additionally, each chapter includes helpful review questions and answers. GPS and GNSS are revolutionizing the practice of surveying and mapping. This user-friendly manual gives you all the tools needed to understand and use these important technologies in everyday practice. About the Author: Jan Van Sickle, P.L.S. has more than 40 years of experience as a land surveyor. He was privileged to supervise surveys with the first commercially available GPS receivers in the early 1980s and has worked with GPS since. He received his MEng from the University of Colorado in 2006. He is the author of "GPS for Land Surveyors, Basic GIS Coordinates" and "1001 Solved Surveying Fundamentals Problems". The latter is quoted in the feature Surveying Solutions each month in "POB" magazine. He taught the Advanced Surveying Program at the Denver Institute of Technology and GPS seminars throughout the United States. He is currently a Senior Lecturer at Penn State University. He is a licensed surveyor in California, Colorado, Oregon and North Dakota.