"So, we're off working now with that program office to go start off a more commercial line," Purdy said. "And when I say commercial in this particular aspect, just to clarify, this is accomplishing the same GSSAP mission. Our operators will fly the GSSAP system using the same ground systems and data they do now, but these would be using faster, commercial build times... and cheaper, less expensive parts in order to bring that together in a faster sense." An artist's illustration of two of the Space Force's GSSAP surveillance satellites, built by Northrop Grumman. Credit: US Space Force The next-gen GSSAP spacecraft may not meet the same standards as the Space Force's existing inspector satellites, but the change comes with benefits beyond lower costs and faster timelines. It will be unclassified and will be open to multiple vendors to build and launch space surveillance satellites, injecting some level of competition into the program. It will also be eligible for sales to other countries. More for less with GPS There's another area where Purdy said the Space Force was surprised by what commercial satellite builders were offering. Last year, the Pentagon used a new "Quick Start" procurement model authorized by Congress to establish a program to bolster the GPS navigation network, which is run by the Space Force but relied upon by commercial users and private citizens around the world. The Space Force has more than 30 GPS satellites in medium-Earth orbit (MEO) at an altitude of roughly 12,550 miles (20,200 kilometers). Purdy said the network is "vulnerable" because the constellation has a relatively small number of satellites, at least relative to the Space Force's newest programs. In MEO, the satellites are within range of direct ascent anti-satellite weapons. Many of the GPS satellites are aging, and the newer ones, built by Lockheed Martin, cost about $250 million apiece. With the Resilient GPS program, the Space Force aims to reduce the cost to $50 million to $80 ...
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