IRNSS-1D is a satellite in the Indian Regional Navigational Satellite System (IRNSS) constellation. The satellite is the fourth of seven in the constellation, launched after IRNSS-1A, IRNSS-1B and IRNSS-1C. The satellite is the only satellite in the constellation slated to provide navigational services to the region. The satellite will be placed in geosynchronous orbit. It was launched successfully on 28 March 2015 onboard ISRO's PSLV-C27 from Satish Dhawan Space Center, Sriharikota.
|Mission duration||12 years|
|Manufacturer||ISRO Satellite Centre|
Space Applications Centre
|Launch mass||1,425 kilograms (3,142 lb)|
|Dry mass||598 kilograms (1,318 lb)|
|Start of mission|
|Launch date||11:49:00, March 28, 2015 (UTC)|
|Launch site||Satish Dhawan SLP|
|Perigee altitude||35,750.0 km (22,214.0 mi)|
|Apogee altitude||35,884.1 km (22,297.3 mi)|
|Epoch||5 May 2015, 20:43:00 UTC|
The satellite will help in augmenting the satellite based navigation system of India which is currently under development. The navigational system so developed will be a regional one targeted towards South Asia. The satellite will provide navigation, tracking and mapping services.
IRNSS-1D satellite has two payloads: a navigation payload and CDMA ranging payload in addition with a laser retro-reflector. The payload generates navigation signals at L5 and S-band. The design of the payload makes the IRNSS system inter-operable and compatible with Global Positioning System (GPS) and Galileo. The satellite is powered by two solar arrays, which generate power up to 1,660 watts, and has a life-time of ten years.
- Communication-Centric Intelligence Satellite (CCI-Sat)
- GPS-aided geo-augmented navigation (GAGAN)
- Satellite navigation
- Graham, William. "PSLV launches with IRNSS-1D to open India's 2015 campaign". NASASpaceflight.com. Retrieved 28 March 2015.
- "PSLV-C27/IRNSS-1D Mission". ISRO. Retrieved 2 March 2015.
- "IRNSS 1D Satellite details 2015-018A NORAD 40547". N2YO. 10 May 2015. Retrieved 10 May 2015.
- "IRNSS". space.skyrocket.de. Retrieved 6 December 2014.
- "India's Fourth Navigational Satellite IRNSS-1D Launched From Sriharikota".
- "ISRO puts India's Navigation satellite IRNSS 1B into orbit". IANS. news.biharprabha.com. Retrieved 4 April 2014.
- "IRNSS 1-D launch put off". India. thehindu.com. Retrieved 4 March 2015.
- "ISRO: After GSLV launch, PSLV C24 with IRNSS-1B likely in March". India. 5 January 2014. Retrieved 6 January 2014.
- Dennis S. Jesudasan. "Countdown to IRNSS 1D on March 7". The Hindu. Retrieved 28 March 2015.