MNG 211 Practice Review Exam Test.

MNG 211 Practice Review Exam Test. how many active satellites comprise the U.S. GPS system? - CORRECT ANSWER 24 How many GPS satellites are required for positioning? - CORRECT ANSWER 4 What are the three major segments of the U.S. GPS system? - CORRECT ANSWER 1. space segment 2. control segment 3. user segment Explain how a GPS receiver calculates its position - CORRECT ANSWER Satellite and receiver both know the time and transmit a signal of the current time and other information. The receiver compares current time to the signal it receives and finds the difference between the two times List three benefits of GPS surveying - CORRECT ANSWER 1. offers high accuracy for point measurement 2. can be used to establish new control points 3. requires less man-power than surveying with a total station List three limitations of GPS - CORRECT ANSWER 1. maximum attainable precision is not as high as BPM 2. limited use near trees and buildings 3. requires physical access to the survey point What is the purpose of post-processing? - CORRECT ANSWER The purpose of post-processing is so that data can be sent to the system for further correction and data correction can be reported back to the surveyor This type of survey obtains information for locating natural and man-made features of well as varying ground elevations - CORRECT ANSWER Topographic