Mission Objectives

• Design and develop a micro satellite as a payload for SSLV-D2 Launch Vehicle.
• Design and develop payload instruments compatible to micro satellite bus and with new technologies that are required for future operational satellites.
• Design and develop a micro satellite accommodating new technology Payloads in a quick turn-around time.

Spacecraft Configuration: -

Mission Parameter:

• Orbit Altitude - 450 km
• Lift off mass ~ 157 kg
• Mission Life ~ 1 year

Structure:

• Cuboid consists of 6 Aluminum Honeycomb Decks. Top and Bottom decks are connected with 4 staggered cross ribs and 4 closing vertical decks.

Structure:

• Cuboid consists of 6 Aluminum Honeycomb Decks. Top and Bottom decks are connected with 4 staggered cross ribs and 4 closing vertical decks.

Thermal Control:

• Passive thermal control with Optical Solar Reflector, Multi-Layer Insulation, Thermal interface material, etc.

Mechanism:

• Frangi bolt actuator based Solar Panel deployment Propulsion:
• Monopropellant system; 5kg of Hydrazine fuel

Power:

• Miniaturised power electronics and distribution package
• Li-ion battery of 27.2 Ah capacity
• Power generation of 357 W at EOL, equinox

Sensors:

• micro Star Sensor (mSS)
• 4π Sun Sensor (4πSS)
• micro-Inertia Reference Unit (mIRU)
• Magnetometer (Mag)

Actuators:

• 1N Thrusters
• 1Nms/ 0.02Nm Reaction Wheels
• 20 A.m2 Magnetic Torquers

AOCS:

• Pointing accuracy – 0.1° (3σ)
• Drift rate – 7.5e-4°/s

Onboard Computer:

• Telecommand and house-keeping Telemetry, Sensors Processing Electronics, Attitude and Orbit Control and Thermal Management.
• MIL STD 1553B protocol for interfacing with other sub-systems.

RF System:

• S-Band Telemetry Transmitter
• S-Band Telecommand Receiver
• 12 channel SPS, 15m location accuracy, 0.15m/s velocity accuracy (3 - sigma)
• X-Band Data Transmitter

Data Handling & Storage:

• Integrated Data Handling and storage of 32Gb

Major Payloads: -

mmWave Humidity Sounder (MHS)
Parameter	Specification
Swath (km)	1050km
Spatial resolution @ Nadir	10km (20km @ swath edge)
Integration Time	4ms
Scan Rate	50rpm
Mass	26kg
Power	55W
Data Rate	1Mbps
Spectrum Monitoring Payload (SMP)
Parameter	Specification
Input Frequency bands	L-Band & S-Band
Output Interface	LVDS 3-wire interface
Mass	~13kg
Power	~35W
Data Rate	2Mbps