ADCS System Power System Main Payload Comms System

ADCS System Power System Main Payload Comms System
SUMBANDILASAT LAYOUT
4
7
12
9
21
28
27
25
19
1
30
18
29
13
23
15
26
32
20
5
31
16
3
33
17
14
8
6
Experiment
Payload
ADCS
System
1
4
Magnetic Field Probes
Measures magnetic field
7
Magnetometer
Measures magnetic field of earth
Three Axis Coarse Sun Sensor
Measure the angle of the sun with respect
to the satellite orientation
10
Attitude Control System
Attitude and Orbit determination and
control system
13
16
Fluxgate Magnetometer Electronics
Signal conditioning of measurements
19
Star Camera
Attitude sensing with help of stars
25
22
On board Computer and Viewfinder
Housing on-board computer and viewfinding
functionality
Ground Support Equipment
used to test the satellite
UHF Center Fed Dipole Antenna Transmits telemetry signals from the
satellite to the ground station
28
31
VHF Helix Antenna
Receives uplink telecommand signals from
ground station
Lithium-Ion Batteries
Storage of energy
Main
Payload
Comms
System
2
5
Electric Field Probes
Measures electric field
8
Three Magnetotorquer Rods
Momentum dumping and control
11
One Axis Coarse Sun Sensor
Measure the angle of the sun with respect
to the satellite orientation
Horizon Sensor
Determines the centroid of the Earth w.r.t.
the Satellite.
14
17
Reaction Wheels
Z axis and Y axis - orientation/ momentum
control
20
Cold Gas Propulsion Unit
Used for orbit maintenance
23
Camera Controller and Mass Storage
Interfaces to the telescope electronics and
contains the mass memory storage of the
satellite
Video Exciter Unit
Generates video payload transmission
signal
26
29
S-band Transmission Front End Unit
Amplifies, measures and filters data and
video payload transmitter signals
S-band Transmission Front End Unit
Amplifies, measures and filters data and
video payload transmitter signals
32
Solar Panel Photovoltaic Cells
Satellite’s main energy source
Structure
Power
System
3
Experiment Data Board
Electronics for science experiment payload
6
GPS Receiver Antenna
Provide orbit position and velocity
measurements obtained from GPS satellite
constellation
9
12
Magnetometer - resistive
Measures magnetic field of earth
Fine Sun Sensor
Determines the centroid of the Sun w.r.t.
the Satellite.
15
18
Gyroscopes
Attitude estimation
Main imager payload
Take 6 colour, 6.25m Images of the earth
21
24
PAL Video Cameras
View finding
Satellite structure
Skeleton for mounting of satellite
components. (Black: thermal paint for
passive thermal control)
27
VUCU
Telecommand and telemetry communication
between satellite and ground station
30
Data Exciter Unit
Generates data payload transmission signal
33
Power Control Unit (PCU)
Interfaces to batteries and solar panels
GSE
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