M. S. Ramaiah School of Advanced Studies 1

M. Sc. (Engg.) in Electronics System Design

Engineering

GREESHMA SCWB0913004 , FT-2013

10th Module Presentation

Module code : ESE2516

Module name : Electronic System Design &

Development

Module leader : Mr. Ugra Mohan

Presentation on : 15/09/2014

Task Clarification of Pico and NanoSatellites

M. S. Ramaiah School of Advanced Studies 2

Contents

o INTRODUCTION

o PROBLEM DEFINITION

o TASK SPECIFICATION

o DETAILS

o AEROSPACE INVENTION

o CONCLUSION

o REFERENCE

M. S. Ramaiah School of Advanced Studies 3

Introduction

Fig 1 Satellite in Earth Orbit Fig 2 PICOSat

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Problem Definition [1]

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Task Specification [2]

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Details [2]

Orbit Sun Synchronous Polar Orbit, 500-850 Km

Mass 3Kg

Structure 10 cm x 10 cm x 32 cm

Imaging (Payload) Near IR range (700-850 nm), GSD - 138.6 m , Focal

length - 50 mm

GPS (Payload) Position Accuracy ~20 m , 12 ch, Patch Antenna

IMU (Payload) Analog Device ADXL Accelerometer, 3 axis Gyros, 24 bit

ADC

On board Computer 1. MSP 430(16 MHz) processor, 8KB RAM and 128 KB

Flash

2. ARM 7 core 64 KB RAM 512 flash

Data Storage Triple modular redundancy memory, SD card 2 GB

Attitude Determination and Control

System

3 axis Magnetometer, 3 axis MEMS Gyro, Reaction wheel,

Magnetorques

Power System Li-ion Batteries, Average power 3 Watts

Communication Data Downlink : 430-440 MHz, 9600 bps, Data Uplink :

144-146 MHz, 1200 bps, Beacon Downlink: 430-440 MHz

Ground Station GUI interface in Lab VIEW, rotary system

Thermal Control System Passive System, Thermal Grease, Surface Coatings

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Aerospace Invention [1]

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Conclusion

Components are designed to serve specific task. It is accomplished by this pico and nano

satellites task clarification process. Problem Definition defined with output as a specification

Convergent thinking is done during Task Clarification.

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Reference

1. Jordi Puig-Suari (2011). Sun Oriented and Powered, 3 Axis and Spin Stabilized

Cubesats. Korea: CALPOLY University. 1-11.

2. Fuat lnce (2003). A Role for Cubesats in Responsive Space. Illinios: Marmara

University arid TuAP Academy. 1-19.

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Thank You