AFSPC-CO TERMINOLOGY Revised: 12 Jan 2019

Term Description AEHF Advanced Extremely AFB / AFS Air Base / Air Force Station AOC Air Operations Center AOI Area of Interest

The point in the of a heavenly body, specifically the , or of a man-made Apogee at which it is farthest from the . Even CAP experience apogee. Either of two points in an eccentric orbit, one (higher ) farthest from the center of Apsis attraction, the other (lower apsis) nearest to the center of attraction Argument of Perigee the angle in a ' orbit plane that is measured from the Ascending Node to the (ω) perigee along the satellite direction of travel CGO Company Grade Officer CLV Calculated Load Value, Crew COP Common Operating Picture DCO Defensive Cyber Operations DHS Department of Homeland Security DoD Department of Defense DOP Dilution of Precision Defense Satellite Communications Systems - wideband communications for DSCS the USAF DSP Defense Satellite Program or Defense Support Program - "Eyes in the Sky" EHF Extremely High Frequency (30-300 GHz; 1mm-1cm) ELF Extremely Low Frequency (3-30 Hz; 100,000km-10,000km) EMS Electromagnetic Spectrum Equitorial Plane the plane passing through the EWR Early Warning Radar and Electromagnetic Wave Resistivity GBR Ground-Based Radar and Global Broadband Roaming GBS Global Broadcast Service GEO Geosynchronous Earth Orbit or ( ~22,300 miles above Earth) GEODSS Ground-Based Electro-Optical Deep Space Surveillance GEOINT Geospatial Intelligence GPS Global Positioning System GSU Geographically Separated Unit Highly Elliptical or : ~100 to several hundred thousand miles (altitude HEO varies greatly) HF High Frequency (3-30 MHz; 100m-10m) IMINT Inclination (i) Angle between from the equatoral plane to location in orbit stated in degrees IR Infrared ISR Intelligence, Surveillance, Reconnaissance ISSO Institute for Space Systems Operations JFFT Joint Friendly Force Tracking JSPOC Joint Space Operations Center AFSPC-CO TERMINOLOGY Revised: 12 Jan 2019

Term Description

1) a law stating that the orbit of each is an with the at one of the ellipse Kepler's Three Laws 2) a planet's orbital changes with its from the sun (aka: Law of Equal Areas) 3) the ratio of the square of the revolutionary period (in ) to the cube of the orbital axis (in astronomical units) is the same for all (aka: Law of Harmonics)

LaGrange Point A point in an the orbital configuration of a two-body system where a small object affected only by can theoretically be stationary relative to the two larger objects. LDR Low Data Rate (e.g., text messages) LEO : 120-1200 miles above Earth MDA Missile Defense Agency MDR Medium Data Rate (e.g., 4G) MDT Mission Defense Teams MEO Mid Earth Orbit: ~1,000 above Earth (mainly GPS satellites) MILSTAR Military, Strategic, Tactical and Relay: 5 military satellites MUOS U.S. Navy’s Mobile User Objective System (LMCO is the prime contractor) The point of the celestial sphere that is directly opposite the zenith and vertically NADIR downward from the observer NAMER North America Nebula gases 1) a body remains at rest or in with a constant unless acted upon by an external force Newton's Laws of 2) the rate of change of momentum is proportional to the imposed force and goes in the Motion direction of the force 3) action and reaction are equal and opposite NGA National Geospatial-Intelligence Agency (US DoD) NGEN Next generation NORAD North American Aerospace Defense Command NRO National Reconnissance Office NSA National Security Agency NSDC National Space Defense Center NUDET Nuclear Detonation OCS Offensive Counter Space OOD Operation Olympic Defender OPIR Overhead Persistent IR The point in the orbit of a heavenly body, specifically the moon, or of an artificial satellite at Perigee which it is nearest to the earth The power of the county, or the citizens who may be summoned to assist the authorities in Posse Comitatus suppressing a riot, making arrests, or executing any legal precept which is forcibly opposed Describing motion in a forward direction, especially with respect to other bodies in the Posigrade same system: 0 < i < 90 PPS Precise Precision System PR Personnel Recovery AFSPC-CO TERMINOLOGY Revised: 12 Jan 2019

Term Description Moving from east to west on the celestial sphere; or for planets, around the sun in a Prograde direction opposite to that of the Earth Right Ascension of the Ascending Node - angle measured from First Point of Aries to RAAN (Ω) where the satellite passes through an equatorial plane on its ascending RCS Radar cross-section; also Ready.gov (DHS) Be informed and plan ahead in preparation for possible disasters Retrograde Moving backwards SBIRS Space-based IR system SHF Super High Frequency (3-30GHz; 1m-1cm) The measurement calculates the length of a day by comparing the earth's to the SIGINT Signals Intelligence SIPR Secure Internet Protocol Router; based in Annapolis, MD SPADOC Space Defense Operations Center SPIRIT Spatial Infrared Imaging Telescope SSA Space Situational Awareness SSDP Space Systems Defense Program The nearly straight-line configuration of three celestial bodies (such as the sun, moon, and earth during a solar or lunar ) in a gravitational system UHF Ultra High Frequency (300-3000 MHz; 1m-10cm) USNORTHCOM Northern Command UTC Universal Coordinated Time VHF Very High Frequency (30-300 MHz; 10m-1m) VLF Very Low Frequency (3-30 KHz; 100km to 10km) VIZOBS Visual Observations VOP Velocity of Propagation XDR Extended Data Rate (e.g., videochats) The point of the celestial sphere that is directly opposite the nadir and vertically above the Zenith observer AFSPC-CO TERMINOLOGY Revised: 12 Jan 2019

Term Description