IRNSS-1 Launch in June

[arp2041]

IRNSS Constellation

India plans to launch its first navigational satellite in June using PSLV-C22 ISRO Chief K Radhakrishnan announced today (March 16, 2013).

The satellite was earlier slotted for launch in May 2013.

ISRO is developing a satellite based navigation system, called Indian Regional Navigation Satellite System (IRNSS), with a constellation of 7 satellites and complementary ground infrastructure. Two spare satellites are also planned.

The system is designed to provide position accuracy of better than 10m over India and the region extending about 1500 km around India.

IRNSS-1 Launch in June

more details:

Introduction

ISRO is developing a satellite based navigation system, called Indian Regional Navigation Satellite System (IRNSS), with a constellation of 7 satellites and complementary ground infrastructure. Two spare satellites are also planned.

The system is designed to provide position accuracy of better than 10m over India and the region extending about 1500 km around India.

The IRNSS system is planned to be made operational by end of 2014. Government has approved the IRNSS project at a total cost of Rs. 1420.00 crores in May 2006 for both space and ground infrastructure.

Accuracy and Coverage

The IRNSS is expected to provide positional accuracies similar to the Global Positioning System (10m over Indian landmass and 20m over the Indian Ocean) in a region centered around the country with a coverage extending up to 1,500 km from India between longitude 40° E to 140° E and between latitude ± 40°.

Besides accurate real time position, the system is designed to provide Navigation and Time (PNT) services to users on a variety of platforms with 24x7 service availability under all weather conditions.

IRNSS Features

Highly accurate position, velocity and time information in real time for authorized users on a variety of vehicles.
Data with good accuracy for a single frequency user with the help of Ionospheric corrections.
All weather operation on a 24 hour basis.

Architecture


The INRSS will consist of three segments: space, ground and user.

The space segment consists of a constellation of seven satellites: three (Geostationary Orbit) GEOs located at 34° E, 83° E and 131.5° E and four (Gyosynchronous Orbit) GSOs at an inclination angle of 29° placed two each at with equator crossing at 55° and 111° East.

The ground segment consists of INRSS ranging and integrity monitoring which will be located at 20 places and most of them will be located in the airports along with GAGAN ground elements.

IRNSS will have the two Master Control Stations (MCS), which may be co-located with GAGAN INMCC.

IRNSS will have two types of signals in L5 & S-band and S-band. Both L5 and S-band consists of two downlinks.

IRNSS provides two basic services such as Standard Positioning Service (SPS) for common civilian users and Restricted Service (RS) for special authorized users

The system can be augmented with local area augmentation for higher accuracy.

IRNSS Satellites

Each IRNSS satellite will weigh about 1,380 kg and their solar panels generate 1,400 Watt of power. The satellites will be configured with an optimized I-1K bus (compatible for launch onboard PSLV) with a power handling capability of around 1600W

The satellite is designed for a nominal life of 7 years. Its payload will consist of electronic equipment to generate navigation signals and extremely accurate on-board atomic clocks. The navigation signals in S-band (2-4 GHz) are fed to a high performance phased array antenna for the required coverage.

Indian Regional Navigational Satellite System (IRNSS)-1, the first of the seven satellites of the IRNSS constellation,

The full constellation is planned to be realized during 2014 time frame.

Implementation Progress

IRNSS-1, the first of the seven satellites planned for IRNSS program, will be launched on-board PSLV-C22 in June 2013. (It was earlier announced the satellite would be launched in May 2013.)

Indian Regional Navigation Satellite System (IRNSS) - Indian Space Projects

 

[qwerrty]

Highly accurate position, velocity and time information in real time for authorized users on a variety of vehicles.
Data with good accuracy for a single frequency user with the help of Ionospheric corrections.
All weather operation on a 24 hour basis.

The full constellation is planned to be realized during 2014 time frame.

highly accurate and operational 2014? they haven't got one in orbit yet. lol. the first 3 or 4 sats will most probably be just for testing and may takes years to tweak and fine tune before the real ones. this is an indian project, so expect delay..

 

[AADHAAR]

highly accurate and operational 2014? they haven't got one in orbit yet. lol. the first 3 or 4 sats will most probably be just for testing and may takes years to tweak and fine tune before the real ones. this is an indian project, so expect delay..

None being a worthy reason of not doing it, though.

Green revoutions happen to those who attempt them.

 

[neehar]

highly accurate and operational 2014? they haven't got one in orbit yet. lol. the first 3 or 4 sats will most probably be just for testing and may takes years to tweak and fine tune before the real ones. this is an indian project, so expect delay..

chill buddy this is not this first satellite india is launching..we've launched many indian and foreign satellites on time successfully

 

[AADHAAR]

chill buddy this is not this first satellite india is launching..we've launched many indian and foreign satellites on time successfully

yup. I agree.

GSLV launch in May is probably of larger importance than this one. This is only a PSLV launch.

 

[qwerrty]

chill buddy this is not this first satellite india is launching..we've launched many indian and foreign satellites on time successfully

this is not an imaging satellite or your experience in launching satellites. this project requires a network of satellites to work correctly and india has zero experience. there's no shortcut. the american GPS, galileo, glonass, beiduo.. all had gone through testing phase for 2~3 years with their prototype satellites. so forgive me for being skeptic at that dateline lol:
and fewer satellites does not make it more accurate than 30+ satellites on other navigation systems

 

[anyrandom]

this is not an imaging satellite or your experience in launching satellites. this project requires a network of satellites to work correctly and india has zero experience. there's no shortcut. the american GPS, galileo, glonass, beiduo.. all had gone through testing phase for 2~3 years with their prototype satellites. so forgive me for being skeptic at that dateline lol:
and fewer satellites does not make it more accurate than 30+ satellites on other navigation systems

lol everybody starts with zero experience and in india's case they would have definitely studied russian or american systems . Why reinvent the wheel again and waste time?