NASA/George C. Marshall Space Flight Center, Procurement Office, Marshall Space Flight Center, AL 35812

B -- EARTH METEROID ENVIRNOMENT MODEL NASA'S SPACE ENVIRONMENTS AND EFFECTS (SEE) PROGRAM SOL 1-8-EL-C0750 DUE 091198 POC Debbie R. Matthews, Contract Specialist, Phone (256) 544-8945, Fax (256) 961-0059, Email debbie.r.matthews@msfc.nasa.gov -- Michael R. Sosebee, Contracting Officer, Phone (256) 544-0415, Fax (256) 544-8641, Email michael.sosebee@msfc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/MSFC/date.html#1-8-EL-C0750. E-MAIL: Debbie R. Matthews, debbie.r.matthews@msfc.nasa.gov. NASA/MSFC plans to issue a Request for Quotation for the Earth Meteoroid Environment Model NASA's Space Environments and Effects (SEE) Program. Statement of Work as Follow: Objective: The objective of the effort is to demonstrate how advances in meteor radar technology and the techniques for the analysis of meteor radar data made during the last 3 decades have improved, and to apply these techniques towards archiving a dramatically improved understanding of the Near-Earth meteoroid complex. Recent changes in technology, analysis routines and reduction methods now offer the promise of real-time, automated monitoring of the meteoroid background over large collecting areas to be undertaken using a specially designed, low-cost radar system. Existing Models: At present, there are no continuously operating instruments monitoring the meteoroid background. Transient events or unusual changes often go unnoticed and undocumented. This situation leaves those requiring information on the near-Earth meteoroid environment to resort to using older information relating to average flux and mass distribution characteristics. These older models are known to have only limited or no fidelity pertaining to intraannual variations in the sporadic activity and directional changes in the flux. Indeed, most current meteoroid models used for near-Earth space operations assume isotropic distributions of radiants for sporadic meteoroids and use a fixed mean flux curve that often ignore parts of the shower component entirely (e.g. the current NASA model based on NASA SP-8013). Specific Tasks: 1. The contractor shall provide analyzed data sets of older patrol radar meteor echo rate data from the Springhill (NRC, Ottawa), Christchurch (NZ), and Sheffield (UK) systems, as well as from more sophisticated systems that extract directional information from the meteor echoes -- observations made with the continuous wave (CW) forward-scatter system which operated between London (Ont.) and Ottawa during the earlier part of this decade and recent data from the CLOVAR and SkiYmet radars located near London (Ontario). 2. The contractor shall use the data gathered in Task 1 to extract fluxes as a function of mass from each of the six sporadic sources, as well as their temporal variations. The contractor shall provide observations by three frequency radar which enables calibration of meteor fluxes to outside the atmosphere; assemble pertinent data sets in-house capable of accepting three frequency radar observations which shall be conducted during this research; and construct reliable meteoroid flux models. The models shall provide the initial basis of a modern, higher fidelity model (which the SEE Program plans on developing) of the meteoroid background than presently exists and could be incorporated into numerical models of impact probabilities on satellites in LEO and GEO. Delivery Schedule: Item 1. Sheffield Radar Patrol Data Frequency One Time. Format Electronic. Due Date 12/1/98. Distribution COTR. Item 2. Springhill, Canada Radar Patrol Data and CLOVAR Patrol Data through 11/1/98 Frequency One Time. Format Electronic. Due Date 4/1/99. Distribution COTR. Item 3. Christchurch, New Zealand RADAR Patrol Data Frequency One Time. Format Electronic. Due Date 7/1/99. Distribution COTR. Item 4. SkiYmet Patrol Data through 4/1/99 and London CW RADAR data Frequency One Time. Format Electronic. Due Date 9/1/99. Distribution COTR. Item 5. Final SkiYmet and CLOVAR Data through 9/1/99 & Final Report Frequency One Time. Format Electronic. Due Date 10/30/99. Distribution COTR. Period of Performance: 72 weeks This procurement is being conducted under the Simplified Acquisition Procedures (SAP). NASA/MSFC intends to purchase the items from University of Western Ontario, London, Ontario Canada. The Government does not intend to acquire a commercial item using FAR Part 12. Interested firms have until September 11, 1998, to submit in writing to the identified point of contact, their qualifications/capabilities. Such qualifications/capabilities will be used solely for the purpose of determining whether or not to conduct this procurement on a competitive basis. Responses received after September 11, 1998, will be considered nonresponsive to the synopsis and will not be considered. A determination by the Government to not compete this proposed effort on a full and open competitive basis, based upon responses to this notice is solely within the discretion of the Government. Oral communications are acceptable in response to this notice. All responsible sources may submit an offer which shall be considered by the agency. The quoter shall state in their quotation their business size status for this procurement. Services to MSFC is required within an estimated period of performance of 72 weeks. The DPAS rating for this procurement is D0-C9. Posted 08/28/98 (D-SN243451). (0240)

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