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.
atomic clocks
举一反三
- GPS satellites send signal information, such as time, position of satellite, position of receiver, and traffic condition on the earth.
- Which of the following can be referred to as a time signal?
- Lead time is the gap between when an order is placed and when it is received.
- What is the time difference between your local time and Beijing time?
- What can signal words of time do for us?
内容
- 0
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
- 1
In a paragraph of time order, signal words and expressions are often used to indicate time order. ( )
- 2
The main function of time signal is to connect details.
- 3
What do signal words of time include?
- 4
What is the target to recognize the signal words of time?