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**UPDATE** The National Geospatial-Intelligence Agency (NGA) is intending to release the Astrea's Request for Proposal (RFP) in Q3. The Contractor Bidders Library (CBL) is available for viewing on the IC-ARC. Please continue to check the Astrea's IC-ARC page and SAM.gov for any additional update. **UPDATE** The National Geospatial-Intelligence Agency (NGA) is providing this Pre-Solicitations Notice of its intent to conduct a Full and Open Competition for Astrea Requirement. NGA anticipates release of a solicitation / Request for Proposal (RFP) on or around 21 April 2026. The North American Industry Classification System (NAICS) code for this acquisition is 541715. BACKGROUND: The Astrea contract, a follow-on to the Spectrum contract, will produce a database that provides a system of data, parameters, and models that allow for the characterization of effective reflectivity, emissivity, and radiance as a function of arbitrary source, sensor, and target geometry, while estimating the errors associated with the computed values. It is contemplated that the solicitation will be posted to the CLASSIFIED Intelligence Community-Acquisition Research Center (IC-ARC) website https://acq.nro.ic.gov. To register for the IC-ARC account, please contact ACEHELPDESK@ace.svc.nro.ic.gov with your classified email or contact the ACE IT Help Desk at 703-230-6300 (Unclassified) or 855-4223 (Classified). This Pre-Solicitation Notice shall not be constructed as a commitment by the United States Government. Please be advised this is a Notice only. It does not obligate the Government to reimburse any cost associated with preparation and/ or submission of a response, nor does this Notice guarantee the Government will issue Solicitation/RFP or award your company a contract to provide these services.

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