One advantage will be finally, that

One advantage will be finally, that Galileo will use a constellation, which is allowing better coverage of Earth, but requires more satellites.

Also, it will start with Hydrogen-Maser-clocks, while GPS is slowly phasing this technology into the system when satellites get replaced.

Next, Galileo will provide a better coverage of the polar regions, because all satellites operate at a higher inclination as GPS.

Disadvantages are simpler: It is not 100% compatible to GPS and it will take a while until it is ready. It will also cost money for more than the basic services, but these high quality service are harder to get for GPS.

And another disadvantage: It is not yet decided who will really operate Galileo. In the worst case, it is a European consortium of these companies who are already responsible for delaying the program.

ผลลัพธ์ (อังกฤษ) 2:

One Advantage Will be finally, that Galileo Will Use A constellation, which is allowing better coverage of Earth, but requires more satellites. Also, it Will Start with Hydrogen-Maser-Clocks, while GPS is slowly phasing this Technology Into The System when satellites. get replaced. Next, Galileo Will provide A better coverage of The Polar regions, because all satellites operate at A Higher inclination as GPS. Disadvantages are simpler: It is Not 100% compatible to GPS and it Will Take A while until it is Ready. It Will Cost also for more money than The Basic Services, but these are Harder to get HIGH Quality Service for GPS. And another disadvantage: It is really Not yet decided Who Will operate Galileo. In the worst case, it is a European consortium of these companies who are already responsible for delaying the program.