Why is the navigation of MG 6pro gray?

In this case, MG 6pro turns on the night light and automatically enters the low light mode, so the navigation is gray, and it will change back to its original appearance after turning off the night light.

When the sun goes down, the navigation map of MG 6pro will also enter the low light mode, and the color of the whole interface will darken, which is more conducive to navigation at night.

Although the navigation interface of the whole map application is dimmed, it will not affect your use during the day, because it provides a high enough contrast to ensure that you will not have visual problems when using the night mode during the day.

Principle:

Because the position of satellite is accurately known, we can get the distance from satellite to receiver in GPS observation. Using three-dimensional coordinates and the distance formula in three satellites, three equations can be formed to solve the position (x, y, z) of the observation point.

Considering the error between satellite clock and receiver clock, there are actually four unknowns, X, Y, Z and clock difference, so it is necessary to introduce a fourth satellite to form four equations to solve, so as to get the latitude, longitude and elevation of the observation point.

In fact, receivers can often lock on more than four satellites. At this time, the receiver can be divided into several groups with four satellites in each group according to the constellation distribution of satellites, and then the group with the smallest error can be selected by algorithm to locate, which improves the accuracy.