alt-PNT

Uncertainty over satellite constellation means alt-GPS capability up in the air: Official

The Space Development Agency's planned Navigation Layer, if it proceeds, would provide both the location of GPS jammers and alternate PNT signals.

Vulcan’s first Space Force launch to carry long-delayed experimental PNT satellite

Vulcan's heaviest version, which will use six solid rocket motors, still awaits Space Force certification.

Changes in FCC rules to support GPS alternatives could impact DoD

The FCC's concerns echo those from DoD and the Space Force about the ease of GPS jamming — and the rapid rise in deliberate jamming by governments and militaries in hot spots around the world such as Syria, Ukraine and the Red Sea.

Space Force taps 4 firms for first phase of ‘Resilient GPS’ program

The four companies chosen for the GPS augmentation program are Astranis, Axient, L3 Harris, and Sierra Space.

Ensured SATCOM, GPS alternatives tops among Space Force budget wishes

"Every dollar invested brings asymmetric returns, while every cut risks asymmetric losses, given the continued advancements of the competitors, the Space Force budget needs more, not fewer, resources to do our job," said Gen. Michael Guetlein, Space Force vice chief.

White House advisory group blasts US government, DoD inattention to GPS woes

The President’s National Space-based Positioning, Navigation, and Timing Advisory Board recommends that the Biden administration create a new “locus of authority and accountability for PNT decision-making beyond DoD GPS program management.”

‘No silver bullet:’ Military will need multiple systems to back up GPS

Each technique available now or in the foreseeable future for what is known as alt-PNT comes with a need to make size, weight, power and cost trade-offs based on what type of platform is being used, according to experts.

Army wants different GPS alternatives for different domains, including commercial tech

"I don't want to take a very expensive, very, very capable [alternative] PNT system that belongs on, let's say, a Stryker platform or an Abrams tank or something like that, and ... stick it on the robot that is the one that I'm training to take first contact," Michael Monteleone, head of the Army's new All-Domain Sensing CFT, explained. 

SDA requests nearly $4.3B for FY25, slight drop from last year

SDA is asking for $357 million for FY25 launch services, down from the nearly $530 million in FY24. Those funds would pay to manifest four planned launches of the Tranche 2 Transport Layer satellites in 2027.

Space Force agencies pile on to find ‘alternate PNT’ capabilities

Space Force's primary acquisition command, Space Systems Command (SSC), is seeking industry input on the possibility of building smaller, lighter and cheaper GPS satellites.

Space Development Agency, Army cooperating on alternates to GPS sat signals

SDA Director Derek Tournear said next year his organization will begin launching the Tranche 1 Transport Layer satellites for regional communications, which also will carry a "navigation message" embedded in their venerable Link 16 data links.