Indian Deep Space Network
|Indian Deep Space Network|
|Organization||Indian Space Research Organisation|
|Location||Byalalu at a distance of 40km from Bangalore|
|Established||17 October 2008|
The Indian Deep Space Network (IDSN) is a network of large antennas and communication facilities that supports the interplanetary spacecraft missions of India. It is located at Byalalu, a village about 100 km from Bangalore, India. It was officially inaugurated on 17 October 2008 by ISRO chairman G. Madhavan Nair. The antenna was designed and commissioned by Hyderabad based Electronics Corporation of India Limited at a cost of Rs 62 crore to Rs 65 crore (about 13 million US dollars). Other similar networks include ESTRACK of the European Space Agency, the Deep Space Network of the United States NASA, the Soviet Deep Space Network, and the Chinese Deep Space Network.
The Network consist of a fully steerable 18 m and a 32 m DSN antenna which improves the visibility duration when compared with the existing ISRO Telemetry Tracking and Command Network (ISTRAC). The established Indian Deep Space Network implements a base band system adhering to Consultative Committee for Space Data Systems (CCSDS) Standards thus facilitating cross-support among the Telemetry Tracking Command (TTC) agencies.
The two antennas at the complex have built in support facilities. A fibre optic link will provide necessary communication link between the DSN Station and SCC / NCC/ ISSDC. The 18 meter antenna has provision to receive two downlink carriers in S-Band and two carriers in X-Band (RCP and LCP), whereas the uplink is either RCP or LCP. It has a G/T of 30/39.5 dB/k (45° elevation, clear sky) for S/X-Band.
The 32-m antenna is of a wheel-and-track design. The antenna is designed to provide uplink in both S-Band and X-Band (20 kW) either through RCP or LCP. The reception capability will be in both S-Band and X-Band (simultaneous RCP and LCP). It can receive two carriers in S-Band and two carriers in X-Band. The system will have a G/T of 37.5/51 dB/k (45° elevation, clear sky) for S/X Band. The station is also equipped to control remotely from the ISTRAC Network Control Centre (NCC).
The complex has 3 antennas :
32m Antenna 
The first one is a 32-meter Deep Space Antenna. The wheel and track 32-m antenna is a state-of-the-art system that will support the Chandrayaan-1 mission operations and beyond. This is co-located with 18-m antenna in the IDSN site at Byalalu. A fibre optics / satellite link will provide the necessary connectivity between the IDSN site and Spacecraft Control Centre / Network Control Centre. This antenna is designed to provide uplink in both S-Band (20/2 kW) and X-Band (2.5 kW), either through RCP or LCP. The reception capability will be in both S-Band and X-Band (simultaneous RCP & LCP). It can receive two carriers in S-Band and one carrier in X-Band, simultaneously. The system will have a G/T of 37.5/51 dB/K (45° elevation, clear sky) for S/X-Band. The base-band will adhere to CCSDS Standards facilitating cross-support among the space agencies. The station is also equipped for remote control from the ISTRAC Network Control Centre (NCC).
18m Antenna 
The second one is a 18-meter Deep Space Antenna. A fibre optic / satellite link will provide the necessary communication link between the IDSN Station and Mission Operations Complex (MOX) / Indian Space Science Data Centre (ISSDC). This antenna is capable of S-Band uplink (2 kW) and both X-Band and S-Band downlink. This system has provision to receive two downlink carriers in S-Band and one carrier in X-Band (RCP and LCP) simultaneously, whereas, the uplink is either RCP or LCP. The system will have a G/T of 30/39.5 dB/K (45° elevation, clear sky) for S/X-Band. The base-band system will adhere to the CCSDS Standards. The station can be remotely operated from ISTRAC Network Control Centre (NCC).
11m Antenna 
The third one is a 11-meter Terminal Antenna which was built for the ASTROSAT Mission. It started tracking satellites in July, 2009.
The Indian Deep Space Network has been built to track and support India's first lunar mission Chandrayaan-1, an unmanned lunar exploration mission by the Indian Space Research Organisation (ISRO), India's national space agency. It was launched on 22 October 2008. The IDSN will be used for tracking, orbit control and housekeeping operations of India's lunar mission for its entire duration of two years. IDSN began to track Chandrayaan 17 minutes after its launch from the Satish Dhawan Space Launch Centre at Sriharikota, when the satellite separated from the launch vehicle.
See also 
- Indian Space Research Organisation (ISRO)
- Exploration of the Moon
- ISRO Telemetry Tracking and Command Network
- Deep Space Network
- Chinese Deep Space Network
- Bureau Report (2008-10-17). "32 metre antenna to track Chandrayaan". Zee News. Zee News Limited. Retrieved 2008-11-11.
- Indian Deep Space Network (IDSN) - Website
- Indian Deep Space Network tracks the Koguya and Rosseta space missions