Air Force’s next GPS satellite ready to boost accuracy, anti-jamming capabilities

Lockheed’s Martin second GPS III satellite has passed all of the U.S. Air Force’s technical and safety tests and is ready to be launched, likely in 2019, according to a company statement Aug. 21.

The statement marks the formal designation that the satellite is “available for launch.”

The first GPS III satellite was available for launch in September 2017 aboard a SpaceX Falcon 9 rocket and is set to liftoff from Cape Canaveral Air Force Station in Florida before the end of 2018. The next satellite will launch aboard a rocket from United Launch Alliance.

The new satellite constellation is expected to be a significant improvement over the current generation of satellites. According to Harris Corp., the company that provides Lockheed Martin with the satellites navigation payload, the next-gen satellites are equipped with “a Mission Data Unit (MDU) with a unique 70 percent digital design that links atomic clocks, radiation-hardened computers and powerful transmitters." This allows for signals three times more accurate than those on current GPS satellites, the company said. In addition to being more accurate, the satellite is also eight times more resistant to jamming. This model also adds and maintains signals to ensure compatibility with Global Navigation Satellite Systems and provide stronger signal integrity.

Harris also unveiled an upgraded payload in November 2017 to be used for the Air Force’s GPS III Follow On (GPS IIIF) program, which will begin with the 11th GPS III satellite. This next-gen payload will grant the clock signal for a new GPS III Search and Rescue (SAR) payload, and extend the satellite’s service life. Lockheed Martin is expected to be the prime contractor.

In June, the third GPS III satellite completed thermal vacuum and environmental testing to simulate how the satellite will hold up in the space’s unforgiving environment.

More In Satellites

US Army aims to complete multidomain task force structure by FY28

The service is planning to station its 5th Multidomain Task Force at Fort Liberty, North Carolina, and will complete formation all five MDTF units by FY28.

AUKUS allies developing undersea capabilities they can field this year

The three AUKUS navies may see advanced undersea technology like small drones and AI-enabled target recognition tools tested and fielded this year.

US, UK issue sanctions on Iran over drone and missile attack on Israel

Treasury’s Office of Foreign Assets Control targeted 16 people and two entities in Iran that produce engines that power drones used in the April 13 attack.

How the Space Force is making its systems more resilient

A little-known board has been working over the last year to identify resiliency measures and ensure the systems the Space Force buys meet those standards.

Lack of standards slows allied tech-sharing, Space Force official says

While the issue is often raised by commercial firms, the official told the Defense Innovation Board it is also a challenge for international allies.