Title of talk

Installation and commissioning of ground station in polar region for LEO satellite data reception 

 Details

Timing:- 4:00 pm

Venue:- C-204 Seminar Hall,D3

(Department of Avionics),

Indian Institute of Space Science and Technology (IIST),

Trivandrum, Kerala, India

Date:- 11th September, 2018 (Tuesday)

Title Abstract

Antarctica ground station at Bharati Station, Antarctica has the advantage of more visibility of satellite passes compared to mainland in India. Nearly 11 orbits for each satellite are visible as compared to 4 orbits in India. Antarctica ground station with a 7.5m antenna system operating in X and S band named as Data reception system (DRS-1) was established in 2011-12. Currently, the station is down linking satellite data from approximately 30 satellite passes daily.

On an average 1.2 TB satellite data is downloaded per day at the station and transferred to NRSC using satellite link. However, existing capabilities of DRS-1 Antenna is not sufficient to meet the data download requirements for Cartosat-3 mission, envisaged for meeting High resolution imagery data need for cartographic applications.

The High resolution imaging calls for increased data rate from the satellite in gigabits per second. This huge data rate is difficult to accommodate in X band due to Spectral crowding. This is pushing future remote sensing satellite missions into Ka band with wider frequency bandwidth to accommodate huge data rate download for high resolution satellite images.

Cartosat 3 mission will have the download capability in all three S/X/Ka bands. Tri band ground station antenna system is an immediate need to support this mission. Data rate of Cartosat-3 is 2.88 GBPS and data in single pass with typical duration of 5 mints will be 1 TB. T

Towards meeting the datarate requirements of Cartosat-3 mission, NRSC/ISRO is establishing a second Antenna system (DRS-2) at Antarctica with tri-band reception capability.

Speaker's Profile

Sandip Sankar Roy, a  Scientist in NRSC, is working in Radio Frequency and Baseband System Group. He completed his M.Tech from Jadavpur University, Kolkata in 2009 and also currently pursuing PhD from IIST under ISRO ­IIST collaboration. He joined NRSC in 2009 and working in the same organization till date.

His current area of research is design of microwave antennas and waveguide structure, tracking feed and reflector antenna for LEO satellites.

He is involved in installation of antennas in different ground stations within India and abroad. He is a team member for installing antenna at polar station (Antractica). He is involved in different satellite missions like  RISAT1, Carsat 2A, 2B and Resourcesat 2. He is project manager for RISAT2A and RISAT 2B mission.

He is awarded,” ISRO young scientist award” for outstanding contribution in space technology in 2016.

IEEE Talk at IIST T (download png)