Multi-Band Approach to Target Discovery

Q3 received a substantial clarification. The government confirmed interest in complementary tools only if they inform dual-band SAR development. Crucially, they specified: the new C/S-band sensor is a secondary payload augmenting pre-existing X-band; dual-band validation requires simultaneous/concurrent operation with interference mitigation; collections must be time-/near time-coincident across bands; and the system should be single, co-located platform (not multi-platform).

Q1 received a new answer clarifying that proposers must develop a standalone C- or S-band SAR payload (not dual-band) that operates independently alongside an existing X-band system, with demonstrated concurrent operation and interference mitigation requirements.

**Summary of Q&A Changes:** Added new Q1 asking for clarification on payload scope (dual-band vs. standalone C/S-band solution). Previous Q1-Q4 renumbered to Q2-Q5. All answer content remains unchanged; only organizational restructuring and one new clarification question added.

Q1 now has an answer clarifying that there is no specific SWaP envelope, but proposers should define feasible SWaP in Phase I. Solutions should be secondary payloads augmenting existing X-band capability with lower frequency bands.

**Changes to Q&A Section:** Added new Q1 requesting clarification on SWaP (Size, Weight, Power) envelope and payload implementation preferences (primary vs. secondary). Previous Q1-Q3 renumbered to Q2-Q4 with no substantive answer changes.

**Q&A Changes Summary:** New Q1 added with detailed follow-up questions on: interim/complementary capabilities using existing commercial systems, clarification on leveraging existing SAR providers, timing of dual-band collections (time-coincident vs. sequential), and platform configuration (single vs. multi-platform). Previous Q1 and Q2 renumbered to Q2 and Q3 respectively with no answer changes.

Status changed from Pre-Release to Open

Q2 answered: Solicitation requires both software and hardware solutions. Phase 1 focuses on concept, design, software, and algorithms; Phase 2 focuses on dual-band SAR hardware prototype development.

Q1 received answer clarifying frequency strategy: Navy seeks to leverage existing X-band systems with complementary mid-frequency wide-beam sensor (S or C-band) for optimized search swaths. No Ka or L-band consideration. Q2 remains unanswered.

Added Q1 on RF frequency flexibility (Ka, L bands vs. X/S/C) and dual RF metamaterial antenna approach. Original Q1 on solution type (software/hardware/both) moved to Q2.

# Summary This Q&A clarifies the acceptable solution types for proposals, helping applicants determine whether they should pursue software-only, hardware-only, or integrated solutions to align their technology with the solicitation's technical scope.

New opportunity: Multi-Band Approach to Target Discovery