GPS System Segments - Understanding GPS: Principles and Applications - page 85

BDA Rx ANT FWD TT&C ANT

T 2 ANT

×

BDY sunshade
CES
CXD

Solar array

LBS/ITS ANT

− Y

Reaction
wheel
RFA

L3 XMTR

XPNDR
L1 XMTR

X

−

RCS
propellant
tank

FSDU

Quadraplexer
BDV ANT

T 1 ANT

×

RCS pressurant
tank

BDV

SDA

RMU
CTDU

SADA

AFS

SCP

EMA (X)

EMA (Y)

BDP

NDU

BDA
L2 XMTR
RGP

SDA

BDY

RCS thruster

EMA (Z)

SAFB
AFT TT&C
ANT

PCU

Reaction wheel
Battery

RMU
Reaction wheel
L5 XMTR

+X

+Y

Figure 3.12 Expanded view of the Block IIF. ( Source: The Boeing Company. Reprinted with permission.)