- Buyers Guide
Military Microwaves Supplement
A global positioning system (GPS) satellite, built by Lockheed Martin for the US Air Force, was successfully launched from Cape Canaveral. This was the seventh successful launch of the new-generation spacecraft, designated GPS IIR. The company has delivered 13 more of these satellites to the US Air Force Space and Missile Systems Center, Los Angeles Air Force Base, CA, to sustain the GPS constellation. The satellite launched, designated GPS IIR-8, joins 26 other operational GPS satellites now in orbit. This satellite will improve global coverage and increase the overall performance of the GPS constellation.
"We are proud of our partnership with the Air Force in carrying out the important mission of the GPS system," said Rick Skinner, vice president of Lockheed Martin Navigation Systems. "We look forward to providing the warfighter as well as commercial and private users worldwide with highly accurate positioning location in a constellation where accuracy is a key performance parameter."
The global positioning system allows any properly equipped user to determine precise time and velocity and worldwide latitude, longitude and altitude to within a few meters. Although originally designed as a guidance and navigational tool for the military, GPS has proven beneficial in the commercial and civil markets for transportation, surveying and rescue operations. The GPS IIR satellites are compatible with the current system and provide improved navigation accuracy, achieved by using an ITT industry payload system. Additionally, increased autonomy and longer spacecraft life are inherent in the Lockheed Martin satellite design. To bring new capabilities to the GPS constellation, Lockheed Martin is under contract to modernize up to eight existing GPS IIR spacecrafts already built and in storage. These spacecrafts, designated GPS IIR-M, will incorporate two new military signals and a second civil signal, thus providing military and civilian users of the navigation system with improved capabilities much sooner than previously envisioned.
GPS modernization is performed at the Space Systems-Valley Forge, PA and ITT Industries, Clifton, NJ facilities. First launch of a GPS IIR-M satellite will be available by July 2004. The US Air Force Space and Missile Systems Center, El Segundo, CA, is the contracting agency.
Get access to premium content and e-newsletters by registering on the web site. You can also subscribe to Microwave Journal magazine.