that makes the clock a bit easier to use. It sits on top of the Dekaclock and automatically sets the correct time using a GPS receiver. It also keeps track of the time displayed by the dekatrons ...

High-precision orbit and clock information is a basic requirement for precise positioning with Global Navigation Satellite Systems (GNSSs) such as the American GPS or the European Galileo. Satellite ...

Fig. 2: Influence of radiation pressure modeling on clock residuals for GPS III satellites as a function of the Sun-Earth-satellite angle epsilon. Fig. 2: Influence of radiation pressure modeling on ...

With the advent of satellite navigation, the requirement for accurate time reached the order of nanoseconds, because a signal delay of one nanosecond corresponds to roughly one foot of distance on the ...

The ESP8266 combines the timestamp from the GPS messages and the PPS signal to synchronize itself with the atomic clock aboard the orbiting satellite. To prevent the system from drifting too far ...

For the case of the GPS, v is the speed of the radio wave from the satellite which is equal to the speed of light c, which is approximately: In both the satellite and the receiver there is a clock.

Figure 4.1 shows the main errors and biases. Figure 4.1: Main GPS errors and biases The errors originating at the satellites include ephemeris, or orbital, errors, satellite clock errors, and the ...

A system that improves the accuracy of the GPS satellite navigation system. A satellite's positioning accuracy is impeded by errors in its clock and signal delays caused by atmospheric conditions.

This method, called GPS spoofing, tries to deceive a GPS receiver by transmitting fake signals that appear legitimate but ...