**12. Advantages of combined GPS and GLONASS**

In many cases, such as navigating in urban or mountainous areas, during aircraft highdynamic scenario, or under the effect of interference, satellite visibility becomes an issue. In such situations, incorporating both GPS and GLONASS constellations in the navigation system may significantly improve the accuracy of the navigational solution. Merging both systems in one navigation solution provides the next significant advantages:


On the other hand, the next considerations should be accounted for when combining GLONASS and GPS:

