Indian Deep Space Network

Alternative names	IDSN
Organization	ISRO
Location	Byalalu,Ramanagar district,Karnataka,India
Coordinates	12°54′06″N77°22′05″E / 12.901767°N 77.36819°E /12.901767; 77.36819
Established	17 October 2008; 17 years ago (2008-10-17)
Website	http://www.istrac.gov.in
Telescopes
32-meter DSN Antenna Deep Space Tracking Antenna 18-meter DSN Antenna Deep Space Tracking Antenna 11-meter DSN Antenna Terminal Tracking Antenna
Location of Indian Deep Space Network
[edit on Wikidata]

Indian Deep Space Network (IDSN) is a network of large antennas and communication facilities operated byISRO to support theinterplanetaryspacecraft missions of India. Its hub is located at Byalalu,Ramanagara in the state ofKarnataka in India.^[1] It was built under the leadership ofS K Shivakumar, the then ISTRAC Director and inaugurated on 17 October 2008 by the former ISRO chairman,G. Madhavan Nair.

Similar networks are run byUSA,China,Russia,Europe, andJapan.

The network consists of theISRO Telemetry, Tracking and Command Network (ISTRAC), augmented by a fully steerable 18 m (59 ft) and a 32 m (105 ft) DSNantenna which improves the visibility duration when compared with the existing ISTRAC system. The Indian Deep Space Network implements abaseband system^{[clarification needed]} adhering toConsultative Committee for Space Data Systems (CCSDS) Standards, thus facilitating cross-support among the Telemetry Tracking Command (TTC) agencies.^[2]

The two antennas at the Byalalu complex have built-in support facilities. Afibre optic link will provide necessary communication link between the DSN station and SCC/NCC/ISSDC. The 18 m antenna is provisioned to receive two downlink carriers inS band and two carriers inX band (RCP andLCP), whereas the uplink is either RCP or LCP. It has aG/T of 30/39.5 dB/k (45° elevation, clear sky) for S/X-Band.^{[clarification needed]}

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 has a measured G/T of 37.3/49.1 dB/k in the S/X bands.^[3] The station may be controlled remotely from the ISTRAC Control Centre (NCC) at Bangalore.

The IDSN facility in Byalalu also houses the ISRO Navigation Centre (INC). The centre became active on 12 June 2013, at the time of launch ofIRNSS-1A, the first of theIndian Regional Navigation Satellite System series of satellites. The INC has a high stabilityatomic clock. It will be used to co-ordinate across 21 ground stations in India.^{[4][needs update]}

The main antenna is a 32-meter Deep Space Antenna. The wheel and track antenna, built in abeam waveguide configuration,^[3] is a state-of-the-art system that supported theChandrayaan-1 and later theMars Orbiter Mission mission operations.^[5] It is currently supporting theChandrayaan-2 orbiter and theAditya-L1 mission as well as actively tracking theChandrayaan-3 Propulsion module. 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 Right circular polarization or Left circular polarization. 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 toCCSDS Standards facilitating cross-support among the space agencies. The station is also equipped for remote control from the ISTRAC Network Control Centre (NCC).^[6]

The second antenna is an 18-meter Deep Space Antenna.^[7]

The third antenna is an 11-meter terminal^{[clarification needed]} antenna.^[8]

The Indian Deep Space Network was built to track and support India's first lunar mission Chandrayaan-1, an uncrewedlunar exploration mission. It was launched on 22 October 2008. The IDSN was used for tracking, orbit control and housekeeping operations of India's lunar mission for its entire duration of operation (Planned to be 2 years, achieved only 312 days). IDSN began to track Chandrayaan 17 minutes after its launch from the Satish Dhawan Space Launch Centre atSriharikota, when the probe separated from the launch vehicle.

IDSN had been used to track Mars Orbiter Mission (MOM) also known asMangalyaan.^[9]

The IDSN32 antenna will be used for science data collection from theVenus Orbiter Mission Spacecraft, planned to be launched in 2028.^[10]

• Deep Space Network
• Chinese Deep Space Network

• Official ISRO website
• Indian Deep Space Network
• Official Chandrayaan-1 WebsiteArchived 8 July 2019 at theWayback Machine

• Deep space networks
• ISRO facilities
• Buildings and structures in Ramanagara district
• 2008 establishments in Karnataka
• Energy infrastructure completed in 2008

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