GPS ;

Global Positioning System (GPS) refers to the NAVSTAR Global Positioning System, a constellations of satellites developed by the United States Department of Defence. At first the GPS was made for military use only, but later made accessible to civilians as well. But recently, GPS is most widely used GNSS satellite constellation in the world.

GLONASS ;

Globalnaya Navigazionnaya Sputnikovaya Sistema (GLONASS) is an acronym which is translated from Russian, this means Global Navigation Satellite System. It is accessible for both military and civil use and also provides real time position and velocity determination.

The main difference between GPS & GLONASS is that, with GPS satellites use the same radio frequencies but have different codes for communication while GLONASS satellites have the same codes but use different frequencies, allowing satellites on the same orbital plane to communicate.

The seasoning of bricks is exactly expressed as allowing the brick to absorb water. It is also known as weathering of bricks. The moisture obtained by the bricks should be able to react with the chemical in the brick. If the moisture obtained by the brick is in its limit and any swelling or deterioration is observed to weed out this damaged brick. Then only sound bricks that are seasoned are used.