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SBIRS HEO

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Defense

SBIRS Infrared sensors hosted on satellites in Highly Elliptical Orbits.

DoD Missile Defense Agency — MDA Glossary

Related Defense terms

Constellation Size (CSIZE)
EOS
FOBS
GEO
HEO
High Earth Orbit (HEO)
LEO
Low Earth Orbit (LEO)
Medium Earth Orbit (MEO)
MEO
MOLNIYA Orbit
Orbiting Debris
Period (nodal)
SBIRS GEO
SBIRS High
SBIRS LEO
Space Based Infrared System (SBIRS)
Space-Based Interceptor (SBI)

Nearby Defense terms

0-9A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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Definitions are reproduced with attribution to their original sources; each entry links to the source and shows when it was retrieved. About · FAQ · Data build 2026-10-15.