David Phillips¹, Charles Meertens², James Riley³, Douglas J Ertz², David Maggert², Dan Reiner³, Christopher J Crosby⁴, Scott Baker¹, Hans Williamson⁴, Brent Henderson⁵ and Matthew Beckley³, (1)UNAVCO, Inc., Boulder, CO, United States, (2)UNAVCO, Inc. Boulder, Boulder, CO, United States, (3)UNAVCO, Inc. Boulder, Boulder, United States, (4)UNAVCO, Boulder, CO, United States, (5)UNAVCO, Inc., Boulder, United States