Prediction Types

Below is table of tuned IRV prediction types alphabetized by satellite provided by each prediction center.

Related Links:

ILRS Mission Priorities
NSGF Time Bias Functions available at NSGF, CDDIS, EDC

Legend Codes: Yy = yearly; My = monthly; Wy = weekly; Dy = daily; X = XYZ files at 1 minute intervals; and numbers following the code indicate multiplicity (e.g., Dy4 means daily files with 4 sets of predictions/day);
Se = SAO elements; MN = maneuver messages; DF = drag function

Note: On 23 March 2000, the NASA Predictions Center at Honeywell Technology Solutions Inc. (HTSI), formerly AlliedSignal Tecnical Servcies (ATS) transitioned from weekly predictions to daily predictions (reference: SLRmail 0569). In May 2000, MCC stopped producing weekly WESTPAC predictions due to budget constraints.

Satellite	Prediction Center Acronyms
Satellite	HTSI	GFZ	NSGF	MCC	NSD	ESOC	G926
CURRENT MISSIONS
Ajisai	Dy		My Dy		Wy
BeaconC	Dy		Dy
CHAMP		Dy3 Se MN DF
EnviSat	Dy					Dy
ERS2	Dy	Wy Se MN
Etalon 1, 2	Dy		Dy
GFO1	Dy MN		My Dy				2/Wy
GLONASS nn	Dy		Dy Dy4
GPS 35, 36	Dy MN		Dy Dy4
GRACE		Dy3 Se MN DF
JASON & TOPEX/ Poseidon	Dy MN		My Dy
LAGEOS 1, 2	Dy		Dy		Wy
METEOR-3M	Dy			Wy			3/Wy
Starlette, Stella	Dy		My Dy
PAST MISSIONS
LRE					Wy
REFLECTOR	Dy
Sunsat	Dy MN		My Dy

Responsible Government Official: Carey Noll
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