SriShakthiSat Brochure

Historical Moments for Sri Shakthi Institute of Engineering and Technology, Coimbatore Global Exposures of UNITYsat: SriShakthiSat Team  Attended Samara University International Summer School at Samara National Research University, Russia (Made World’s 1st Satellite “Sputnik” and Pioneer in Space Research; Also have sent World’s 1st Cosmonaut to Space)  Core Team Members have been Trained at International Space University, Strausberg, France  Participated Trained at Indo-Israel Space Tech Leadership Programme at Tel Aviv University, Israel and COSPAR/UNOOSA  Core Team Members have been Trained at Tokyo University, Japan  Core Team Members have been Trained at Sapienza/Rome University, Rome, Italy and Portugal  Indo-Israel, Indo-Serbia, Indo-Russia, Indo-Japan, Indo-Italy, Indo-Germany, Indo-Portugal, Indo-Canada  UCAL-USA, Samara-Russia, Skoltech-Moscow, Russia, ISU, France, Tokyo University, Japan, Tel Aviv University & Teknion, Israel, COSPAR/ UNOOSA, Israel, IBM OpenPOWER Foundation, IIT Kanpur etc. Our Hearty Thanks to Our Chairman and Mentor Dr. S. Thangavelu For Helping Us to Realize Our Dream of Building and Launching SriShakthiSat to Low Earth Orbit On 28 February 2021 with ISRO’s PSLV C51, Sriharikota -Students and Faculty Members of SIET, Coimbatore

SriShakthiSat: Pico Satellite Programme Launched at SIET, Coimbatore-Evolution from Past Experiences @ SIET! 31 August 2019: Preliminary Design-Brainstorming Session at Sri Shakthi Institute of Engineering and Technology (SIET), Coimbatore, Tamil Nadu

10 Years of Dream and Efforts! SriShakthiSat: Designed and Built by Students’ Satellite Team of SIET

SriShakthiSat Students’ Satellite Team in Actions…… Space Qualification Tests of SriShakthiSat on Vibration Test Bed! First Visuals of UNITYsat in Clean Room!

“New Space Era: Small Satellites-Big Applications” Published by UNITYsat Team-Released during Indo-Israel Event at Indian Technology Congress held at Bangalore Salient Features of SriShakthiSat Ground Station:  SatNOGS (Satellite Networked Open Ground Station) project is a open source hardware and software.  Platform aimed to create a satellite ground station network.  380 Active Ground Stations will Track UNITYsat across the World

UNITYsat is ready for Launch! Demonstration of Inter-Satellite Communication Structural Analysis of SriShakthiSat/UNITYsat Electronic Power System of SriShakthiSat/UNITYSat Exploded View of SriShakthiSat/UNITYSat Axes with Respect to UNITYSat

EXECUTIVE SUMMARY of UNITYsat The visionary initiatives of ISRO under the dynamic leadership of present Chairman, Dr. K. Sivan, including the establishment of Indian National Space Promotion and Authorization Center (IN-SPACe) at the right moment has paved the way for accelerated growth and involvement of academia, industry with Government Research Establishments! The UNITYSat is the combination of “3 Satellites” designed and built as a Joint Development by Sri Shakthi Institute of Engineering and Technology, Coimbatore (Sri Shakthi Sat), Jeppiaar Institute of Technology, Sunguvarchatram, Sriperumpudur (JITsat) and G. H. Raisoni College of Engineering, Nagpur (GHRCEsat) as a Technology Demonstration Mission for studying the indigenously developed satellite subsystems at LEO such as the On-Board Command, Data Handling System, the Electronic Power System and the Communication System. The entire UNITYSat Development process has been mentored by our senior scientists superannuated from ISRO with their generous motivation/encouragement and the proactive support of the Industries, encouraged and certified by ISRO, in Bangalore, such as Alpha Design Technologies, Karnataka Hybrid Micro Devices Ltd, New Tech Solutions, Kepler Aerospace, Ducom Aerospace, Micropack Limited, Dhruva Space and URSC, ISRO who have come forward to hand hold the teams and providing necessary special technical/expertise/services/clean rooms/testing facilities etc along with educating/mentoring the team members. This mission also intends to test the viability of the utilization of such systems in nanosatellite development. This satellite is developed as a 0.33U SlimSat that enables Universities and Colleges to develop full- fledged Satellite Systems with an affordable cost (lesser cost) when compared to the typical systems that need to be imported from companies like EnduroSat, ISIS, Pumpkin etc. This SlimSat design, called UNITYSat is a 0.33U satellite that has the following general features:  On-Board Computer Primary Computation Unit:  Secondary Housekeeping Controller:  External Memory:  Electronics Power System (EPS)  Sensors  Communication System/Telemetry as required for Payload/Mission Objectives  UNITYsat Ground Station  Frequency Range of 435 - 438 MHz (Also supports 33cm HAM Band)  High Efficiency Long Range (LoRa) Communication: Output Power (dBm) of 30dBm; Receiver Sensitivity is -137 dBm The UNITYSat is also designed to study the application of LoRa modems for inter-satellite communication by transmitting satellite beacon signals and having the other satellites in the mesh act as a relay and eventually transmitting it to a ground station. It is also designed to operate on an open-source LoRa platform thereby giving access to anyone who wants to use it. The data will be encrypted but the key for decryption will be shared through the open-source platform called SatNOGS. This platform consists of hundreds of ground stations around the world. We are designing this satellite to be able to interact with all these stations as a part of our academic research interest. This mission also includes the development of an indigenous CubeSat deployment system that will help to reduce the weight of the satellite deployer. This will drastically reduce the cost for launching such nanosatellites. With the Design and Development UNITYsat, the entire Students’ Team who have involved in this process have consolidated their start-up initiative, TSC Technologies Pvt Ltd, at Bangalore and closely working with Committee for Space Program Development (CSPD), Serbia for providing solutions to them, technical assistance to many European/South American Clients soon for the teams of World CanSat/Rocketry Championships and Academic Satellites across the World! ISRO-INSPACe has provided an edge to us and the needed energy to Indian Private Space Initiatives and Academia when it is needed to compete globally now at ease and successfully!

MISSION OBJECTIVES: Primary Mission: Elements of SriShakthiSat Ground Station The UNITYSat is designed for it being a Technology Demonstration of Indigenously Client Computer: developed systems for nanosatellite applications. Our primary configuration includes a Linux based system. Running a custom built firmware, Secondary Mission: exposes all ground station functionality (status, tracking, signal receiving and processing) over LAN or WiFi for mobility or remote operation.  Experimental study of ultra-compact satellites in space environment  Experimental LoRa Inter Satellite Communication Client Software:  Establishment of open-source satellite IoT network based on LoRa  Testing indigenously developed CubeSat Deployer System Our primary configuration includes a Debian based OS on the x86 or ARM based computer including the client software which runs the Gpredict/Orbitron Satellite tracking softwares. Block Diagram of Satellite IOT Network With enabled internet control which allows the user to remotely control the ground station. Radio Receiver: Based on the versatile RTL2832U chip, SatNOGS is using R820T RTL-SDR as the default signal receiver and tuner. The R820T RTL-SDR is currently the cheapest, most common, and most performing solution available in terms of general sensitivity having a frequency range of 24 – 1766 MHz. We also do support Ettus USRPs (through UHD), Airspy, and Funcube Dongle as alternatives for SDR. The stack allows usage of other receivers too (like amateur radio transceivers) through the usage of rigctld (part of Ham Lib project), although an SDR setup is strongly suggested. Antenna System: Lightweight antennas designed to meet satellite communication specifications. Our GS includes designs of VHF/UHF band Yagi and Helical antennas. Parabolic antenna design is in the works too. Rotator: Our tracking mechanism is designed to track the satellite when the satellite is constantly moving in space the antenna moves with the satellite in order to always have a lock on the signal. Rotator Control Hardware/Software: Two Stepper or DC motor drivers and the client computer controlling them are our driving electronics for the rotator with takes input from the computer as to where the satellite is and its direction of travel. Ground Stations to monitor UNITYsat has been established at SIET, Coimbatore. These Ground Stations have became the Member of SatNOGS (Satellite Networked Open Ground Station) project, which is a free software and open source hardware platform aimed to create a satellite ground station network across the world. SatNOGS aims to provide a stack of technologies needed for a distributed network of low earth orbit satellite ground stations. SatNOGS Ground Station is open source hardware ground station instrumentation with a rotator, antennas, electronics and connected to the Client. TSCSatNav: A Mobile App “Amateur Radio and Weather Satellite Tracker and Passes Predictor for Android” has also been developed and implemented by UNITYsat Team successfully. Under SATNOGS Network, there are 300+ operational ground-stations and 380+ satellites with 810+ transmitters monitored as on November 2019! The global array of ground stations contribute to an effective network for monitoring orbital satellites. The European Space Agency has utilized the SatNOGS network to gain initial status observations from the OPS-SAT CubeSat after launch in December 2019. UNISEC India, CSPD, Serbia and Indian Technology Congress Association have congratulated the JIT, GHRCE and SIET Management for their continued encouragement and support to their students to build their own satellite, indigenously! The Students’ Satellite Team Members have been participated in Indo-Israel Space Tech Leadership Programmes held at Israel during 2019 (Twice) and International CanSat/Rocketry Competition held at Serbia during Oct 2019!