M1A2 Abrams upgradation with MAPS system | what is MAPS..?

Correction *** In case of jamming of GPS, soldiers will NOT know where they are and where to go***. U.S army installs a new system on Abrams MBT, the Mounted Assured Precision Navigation & Timing System (MAPS). It is an anti-jam GPS device that allows U.S. combat vehicles to operate in an environment when GPS signals are weak or lost. In case of jamming of GPS, soldiers will know where they are and where to go. It calculates basically three coordinates required for navigation that are latitude longitude and altitude. Longitudes and latitudes are calculated by geo-referencing or through inertial navigation and altitude are measured by barometer measurements. After the Russian military intervention in Ukraine and Syria GPS jamming and spoofing threats are increased. During the Ukraine crisis in 2014, Russian forces grounded a U.N. surveillance drone fleet in Eastern Ukraine using GPS jamming, As per sources, the one-kilowatt portable jammer can block a GPS receiver from as far away as 80 kilometers. And there a