Title: Chapter 2
Course: Intro to GPS/GIS Technologies (PTS 101-002) > Section: Assessments

Q: The Global Position System is best described by three segments:
A: User, Control, Space

Q: Signals from _______ or more satellites are required to provide accurate position in three dimension and accurate GPS time.
A: 4

Q: A method of determining how many wavelengths of the L1 (or L2) signal occur between the receiver and the satellite is called __________ and is used to obtain survey accuracy.
A: Carrier-phase tracking

Q: What are the sources of errors in making a GPS position measurement?

Name 5

Q: A concept of employing one or more stationary GPS receivers to measure errors and improve position accuracy is called_____________.
A: Differential GPS

Q: Procedure whereby carrier-phase corrections are transmitted in real time from a reference receiver to the user's receiver.
A: real time correction

Q: What are three sources of differential correction signals?
A: Nationwide Differential GPS, Satellite-based differential corrections, local base station

Q: Two other satellite-based positioning systems are _________ and______.
A: glonass galileo

Q: What type of pattern should a CEP produce?

Q: Describe 2DRMS.

Q: A complete GPS constellation consists of a minimum of _________ satellites arranged in _______ orbital paths.
A: 24, 6

Q: What is the ideal value for your PDOP if you want an accurate position?
A: 1

Q: What is satellite ranging?

Q: At what speed does the gps signal travel from the satellite?
A: light speed

Q: The critical components of the satellites that make GPS possible are very precise ______ clocks.
A: atomic

Q: The _______ _______ ________ station is located at Schriever AFB.
A: master control monitor

Q: Two application for civilian use of GPS, other than precision farming are?

Q: The basis for GPS operation is satellite _______, whereby the GPS receiver measures the time for GPS signals to reach the receiver.
A: ranging

Q: Since the measured distance between each satellite and a receiver contains measurement errors, these distance estimates are called __________.
A: pseudorange

Q: GPS provides two main services. The _____________ is used only by the military, and the __________ is used by civilians.
A: Precise positioning service, Standard positioning service

Q: GPS signals are transmitted on what radio frequencies?

SELECT 2!!!!!!!!!
- 1575.42 MHZ
- 1227.60 MHz
- 1700.90 MHz
- 2100.40 MHz
A: 1575.42 MHZ; 1227.60 MHz