unclassified - Air Force Financial Management & Comptroller

BUDGET ITEM JUSTIFICATION (EXHIBIT P-40)
UNCLASSIFIED
DATE:
FEBRUARY 2002
APPROP CODE/BA:
OPAF/ELECTRONICS & TELECOMMUNICATION EQUIPMENT
P-1 NOMENCLATURE:
SPACE MODS SPACE
FY2001 FY2002 FY2003 FY2004 FY2005 FY2006 FY2007
QUANTITY
COST
(in Thousands)
$26,841 $31,693 $10,938 $12,413 $13,554 $17,800 $29,820
Description:
Permanent modifications are configuration changes to in-service systems and equipment which correct materiel or other deficiencies, or which
add or delete capability. Safety modifications correct deficiencies which would produce hazards to personnel, systems, or equipment. This
budget line encompasses both new and on-going modification efforts for space equipment and systems. Modification installation funding is
budgeted in the year the installation occurs. Modifications requested in FY03 are identified on the attached P-40A and are representative of
configuration changes/deficiency corrections to be accomplished. Modifications procured during execution may change based on critical
changes/corrections needed to support current Air Force mission requirements.
1. NAVSTAR GLOBAL POSITIONING SYSTEM (GPS): The NAVSTAR Global Positioning System is a space-based radio navigation, time
distribution, and nuclear detonation (NUDET) detection system (NDS). The GPS mission is to provide highly accurate position, velocity,
timing, and NUDET information to properly equipped air, land, sea, and space-based users worldwide. The GPS system consists of four
segments: the Space Segment (SS), the Operational Control Segment (OCS), the Navigation User Segment (NUS), and the Nuclear Detection
Segment (NDS). The OCS segment requires modifications (described below) to replace high failure rate parts and preclude system operational
degradation. Without these modifications, aging and obsolete equipment will continue to fail excessively and degrade system operational
availability. Inaccurate navigation data will be transmitted to worldwide users, resulting in potential loss of life and/or operational equipment,
including multi-million dollar satellites.
A. MOD #S605133, OPERATIONAL SUPPORT ENVIRONMENT (OSE) (previously Weapon Support System): No FY03 funding
requested.
B. MOD #S5005800101, TRANSMITTER/EXCITER REPLACEMENT: No FY03 funding requested.
P-1 ITEM NO PAGE NO:
61
178
UNCLASSIFIED
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