Atharva Satellite Ground Station
Atharva Satellite Ground Station was initiated as a part of IIT Bombay’s first student Satellite “PRATHAM”. The general object of ACE – GS was to receive the signal from the satellite and decode it. The signal transmitted by the satellite and received by the ground station will be used for calculation of TEC i.e. total electron content in the ionosphere. It will basically help in error detection and correction of GPS. For signal reception antennas were a priority. The AGS – Team is using crossed Yagi – Antennas to receive the vertical and horizontal components of the signal thereby measuring phase angle. The satellite would be making a pass over Mumbai twice a day once in the morning and once at night. In order to receive maximum data from the signal transmitted, the antennas would have to track the satellite continuously. Thus we are using an antenna rotator interfaced with satellite-tracking software for tracking it continuously. The result is a system of antennas mounted on rotor moving autonomously as guided by the software.
The team appeared for the amateur HAM radio exam conducted by Ministry of communications, Government of India and acquired their HAM licenses. 7 of the previous team members are licensed HAM Radio operators. At the symposium, Atharva satellite Ground-Station had its first satellite contact with VUSat – OSCAR 52; communication was established with Delhi via the satellite by the licensed team. The current team is also planning to get their licenses and a station license for the ground station in the near future.
Visualization and Conceptualization of the Balloon Satellite APSARHA:
APSARHA–1 (Atharva Payload System – A Radio Linked High Altitude Air Balloon) is the indegenious satellite balloon project of Atharva Ground-Station with a payload of Weather Monitoring and ozone measurement. The team plans to calculate the level of pollution in the environment with the ozone readings. An ozonesonde is planned to be used for ozone measurement. The balloon is expected to reach an altitude from which ozone values could be correctly obtained (approximately 25 – 30km).
On the technical part of APSARHA, the team has completed designing the prototype and coding for the primary launch. They have also conducted the following tests successfully:
- Indoor short range test for measuring the temperature and pressure values along with the GPS co-ordinates
- Outdoor short range test
- 15 meters medium range test
Accurate data was received in all of the above mentioned tests.
- “Satellites and Satellite Tracking System” held on 23rd September, 2013 at Atharva College of Engineering
- “Satellite Tracking and Data Acquisition” held on 22nd September, 2014 at Atharva College of Engineering
- “Antenna Designing and Simulation” held on 22nd March, 2015 at Indian Institute of Technology (IIT), Mumbai
On 15th march 2012 the team conducted a grand symposium. Amongst the dignitaries present, we had Professor Vakil Gulam (class D scientist), Mr. Sandeep Baruah-a scientist from Vigyan Prasar, Department of Technology, GOI. He demonstrated and gave a presentation on APRS. Many amateur radio enthusiasts like VU2MGB (former physics HOD, Bhavan’s college), VU2CMI, VU2JOY, VU2HOT, VU2HIT, neurosurgeon Dr. Ashish Mehta and Satish Sinnarkar (editor of TOI) were present.