A GPS receiver, or GPS sensor, is able to determine its position and velocity ______ the earth’s surface by calculating the amount of time it takes for signals from different GPS satellites to reach the receiver.
A: on top of
B: next to
C: in spite of
D: relative to
A: on top of
B: next to
C: in spite of
D: relative to
D
举一反三
- GPS satellites send signal information, such as time, position of satellite, position of receiver, and traffic condition on the earth.
- The GPS receiver is able to receive signals that are transmitted by stars orbiting overhead.
- 6. GPS determines location by computing the difference between the time a signal is sent and the time is received. GPS satellites carry ______ that provide extremely accurate time. The time information is placed in the codes broadcast by the satellite so that a receiver can continuously determine the time the signal was broadcast.
- accuracy of GPS receiver
- It is possible to use satellites to predict earthquakes because satellites ________. A: take pictures of the Earth B: catch radio waves sent from the Earth’s surface C: are sensitive to Earth’s movements D: see almost the entire Earth
内容
- 0
How many satellites are required to compute a GPS position at least? A: 3 B: 4 C: 5 D: 6
- 1
48 .which of the following equipments can not be used to receive Maritime Safety information. A: HF NBDP B: NAVTEX C: EGC receiver D: GPS receivers
- 2
9. Communication occurs when the sender and the receiver from different races are exchanging messages, it’s International communication.
- 3
155. What is important to check when transferring a position from GPS to a chart?______
- 4
2.In what way is a compliment sincere? A: If the receiver has a good impression. B: If the receiver truly appreciates it. C: If the receiver takes it sincerely. D: If the receiver feels proud of himself/herself.