It was the tenth of nineteen Block IIA GPS satellites to be launched .
USA - 90 , also known as GPS IIA - 10 , GPS II - 19 and GPS SVN - 31 , was an American navigation satellite which formed part of the Global Positioning System .
SVN - 31 was the tenth of nineteen Block IIA GPS satellites to be launched .
USA - 90 , also known as GPS IIA - 10 , GPS II - 19 and GPS SVN - 31 , was an American navigation satellite which formed part of the Global Positioning System .