Surprise: SST-Funded LunaNet PNT Stack

Filed: Session 20 (2026-04-14) Status: Open — worth deeper investigation

Observation

Four SST projects from the 2020 cycle develop complementary layers of NASA's LunaNet PNT architecture, all led by different universities but connected by a single JPL researcher:

Layer	Project	University	PI	Status
Positioning (crater nav)	106826	UT Austin	Brandon Jones	Active, SCOPE-1 pending
Inertial sensing	106828	UCLA	Chee Wei Wong	SST→FO transitioned
Timing (clocks)	155361	Caltech	Kerry Vahala	TRL 3, no transition
Comm relay	106823	SDSU	Satish Sharma	SST→FO transitioned, flew Sep 2024

Andrey Matsko (JPL) is Co-I on both UCLA and Caltech projects — the human thread connecting inertial sensing and timing.

Why This Is Surprising

1. Emergent architecture: SST didn't select these as a coordinated stack — they were awarded independently. Yet they cover positioning, sensing, timing, and communications for the same target architecture (LunaNet).

2. JPL as hidden integrator: Matsko's presence on two projects suggests JPL may be informally coordinating these as a technology pipeline, even if SST treats them as independent awards.

3. Two of four transitioned to FO: SDSU (balloon flight Sep 2024) and UCLA (FO TRL 4→6) both crossed into Flight Opportunities. UT Austin has a CubeSat demo pending. Only Caltech (timing) stalled at TRL 3.

4. MSI success: SDSU (Hispanic-Serving Institution) produced the only confirmed flight in this stack — the terrestrial 5G → space crossover worked.

Open Questions

• Did NASA SST program management intentionally fund this as a LunaNet package, or was it emergent from independent proposals that happened to target the same architecture?
• Is Matsko (JPL) formally tasked with LunaNet PNT technology development, or is his presence coincidental?
• Will the stack converge into a single mission concept (CubeSat LunaNet relay node)?

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Filed session 20. Cross-reference: UT Austin, UCLA, Caltech, SDSU