Knowledge-Guided Test and Evaluation Frameworks for proliferated Low Earth Orbit Constellations

Opportunity SF254-D1206 no longer available

Status changed from Open to Open

# Q&A Changes Summary **New/Updated Answers:** **Q1 (Updated):** Government will collaborate with performers to define and curate synthetic/surrogate datasets for 3-4 representative use scenarios during Phase II. Performers expected to leverage these datasets and may bring their own M&S capabilities. Government will NOT integrate solutions into existing digital infrastructure during Phase II, but solutions must be designed for future interoperability with SDA's open standards-based infrastructure. **Q4 (Updated):** Expanded explanation of containerized microservices requirement—driven by need for agility and scalability within spiral development model. Key benefits: modularity/flexibility for rapid iteration within two-year Tranche cadence, and independent scalability of services. **Q4 (Updated - Methodology):** Government explicitly confirmed openness to alternatives beyond Bayesian methods. Stated: "We are not exclusively committed to this approach" and actively encourage coverage-based uncertainty quantification, adaptive sampling, and other AI/ML techniques. Seeking "innovative partners willing to collaborate to define the art of the possible." **Key Clarification:** Phase II focus is on curating representative datasets and exploring all possible solutions—not integrating into existing infrastructure yet.

**Key Changes to Q&A:** Added 4 new questions (Q1) covering: - Existing PWSA performance models, digital twins, and data availability for performers - Target digital platforms, data standards, and DevSecOps framework requirements - Microservices architecture specifications and requirements - Alternative probabilistic methods beyond Bayesian (coverage-based uncertainty quantification, adaptive sampling) All previous Q&As renumbered (Q2-Q10) but answers remain substantively unchanged. No updates to page limits, framework requirements, on-orbit focus, or re-scoping flexibility previously addressed.

# Summary: No Changes Detected The PREVIOUS and UPDATED Q&A sections are identical. No new questions were added, no answers were modified, and no previously pending responses were resolved. Both versions contain the same 9 Q&As with identical content.

Status changed from Pre-Release to Open

Close Date changed from 2026-03-04 to 2026-04-29

Open Date changed from 2026-02-11 to 2026-04-01

Close Date changed from 2026-02-25 to 2026-03-04

Open Date changed from 2026-02-04 to 2026-02-11

Close Date changed from 2026-02-11 to 2026-02-25

Open Date changed from 2026-01-21 to 2026-02-04

Close Date changed from 2026-02-04 to 2026-02-11

Open Date changed from 2026-01-14 to 2026-01-21

Q&A section updated

Content updated: description, objective, phase_1_description, phase_2_description, phase_3_description

Q&A section updated

Content updated: description, objective, phase_1_description, phase_2_description, phase_3_description

Q&A section updated

Content updated: description, objective, phase_1_description, phase_2_description, phase_3_description