RISAT/CARTOSAT : India's Intelligence Satellites in Orbit

[LETHALFORCE]

cross posted


India to launch satellite to monitor border - Economic Times

India to launch satellite to monitor border

NEW DELHI: India proposes to launch Radar Imaging Satellite (Risat-1) with cloud penetrating capability for imaging various parts of the country, including border areas, the Lok Sabha was informed Wednesday.

Replying to a question, Minister of State in the Prime Minister's Office V. Narayanasamy said that Indian Space Research Organisation (ISRO) is also planning to launch a geo-imaging satellite (Gisat) to provide near real time pictures of large areas of the country.

"The Gisat will provide the pictures of the areas of interest on near real time basis. That is, selected sector-wise imaging every five minutes and entire Indian landmass every 30 minutes at 50 metre spatial resolution," he said.

With 5.47 a.m. Thursday set for the blast-off of Risat-1 into space, the Indian space agency is fuelling the rocket's second stage with liquid propellant.

"The major activity today (Wednesday) is the filling up of the liquid fuel in the rocket's second stage. The countdown is progressing well and every system in the rocket is normal," a source in the ISRO told IANS in Chennai.

The indigenous Risat-1 with a life span of five years would be used for disaster prediction and agriculture forestry, and the high resolution pictures and microwave imaging could also be used for defence purposes.

The rocket is ready to escape the Earth's gravity to put India's heaviest microwave satellite, Risat-1, weighing 1,858 kg at an altitude of 480 km at an inclination of 97.552 degree, ISRO sources said.

 

[Bheeshma]

That news is from April 2012??

 

[LETHALFORCE]

That news is from April 2012??

Yes this is the first mention of GISAT.

 

[praneetbajpaie]

hey why is the poll closed?

 

[Apollyon]

Chinese do not have SAR lense technology which has been around for last 30 years.

Yaogan - Wikipedia, the free encyclopedia

 

[LETHALFORCE]

The Hindu : Cities / Tiruchirapalli : A dream ride to satellites and beyond

A dream ride to satellites and beyond

First woman project director to head a Remote Sensing Satellite Project motivates youngsters

A first-hand account on the conception of a satellite, its transition into a working reality, and finally its launch into space marked the inauguration of Electronics and Communication Engineering (ECE) Association of National Institute of Technology-Tiruchi (NIT-T). N.Valarmathi, India's first woman project director to head a Remote Sensing Satellite Project, encapsulated her 28-years tryst with space technology in an attempt to motivate youngsters to tackle the multilevel engineering challenges involved in building satellites.

Every satellite that is built is a masterpiece that integrates a wide range of engineering systems into a single entity of 100 per cent precision, said Ms.Valarmathi. Drawing from her experience in building Radar Imaging Satellite (RISAT-1), India's indigenous active microwave remote sensing satellite, the ISRO scientist from Ariyalur, walked the audience through a presentation on space technology. "Space is an area with enormous potential for research, imagination, and dreams," she said.

In over an hour, Ms.Valarmathi explained to the listeners various types of satellites, their areas of application, components, stages of realisation, the importance of structural analysis, testing methodologies, and the challenges involved at every stage. "Literally, every single person has to give their 100 per cent to the satellite because the penalty for even the smallest of mistakes can be in months and crore," she said. The scientist also appealed to the students to expand the range of their thoughts so that one day they could develop something that would boost India's standing in global space research. "Dream of designing your own sensors, of finding newer ways in which the outer space can be utilised," she exhorted.

Interspersing her presentation with pictures, Ms.Valarmathi displayed graphic representations of RISAT, its deployed configuration and the various sub-systems within a satellite among other things. With particular reference to RISAT-1, she said, "RISAT uses a new payload called Synthetic Aperture Radar (SAR); it employs a range of new technologies that allow it to capture images day and night and in all weather conditions, unlike the earlier optical remote sensing satellite." She also added that the SAR payload came with two types of polarisations, of which the circular polarisation is yet another first worldwide.

Talking about the road ahead, Ms.Valarmathi felt that spacecraft autonomy, which enables the satellite to function on its own for a while before being taken over by the ground station, will arise as a key area of space research, especially in interplanetary missions. Besides that, she felt areas such as onboard autonomy, space application, image processing, interplanetary missions, and the ultimate setting up of our own space station was other important challenges for the future.

Ending her presentation with a video on the pre-launch operations for RISAT-1, Ms.Valarmathi said, "Space work is not just about science and mathematics, but also about human resource management and error reduction." The day's event drew to a close with the launch of a dedicated website for the association that hoped to provide a platform where students, alumni, and faculty members could connect.

 

[LETHALFORCE]

Pakistan under watch - advanced Indian Satellites Eyeballing the country [RISAT-2] - AA Me, IN

RISAT-2 Eyeballing Pakistan

 

[SADAKHUSH]

I am going to go off topic with a question about USA satellites? Did they have satellites in sky over India during 1965 conflict? The reason, I ask this question is we use to watch a star like object going in circles during that period in Halwara Air Force station and Ludhiana and we were told by our father that these objects are USA satellites. As he was stationed there that period.

 

[sasi]

Pakistan under watch - advanced Indian Satellites Eyeballing the country [RISAT-2] - AA Me, IN

RISAT-2 Eyeballing Pakistan

Any news on our GPS ?
_

 

[LETHALFORCE]

India was suppose to have a GPS satellite this year. Maybe the govt
does not want to make any official announcement or it is delayed? But
we are also partnering in GLONASS with Russians.

India to develop indigenous Global Positioning System

India to develop indigenous Global Positioning System

 

[cloud_9]

Any news on our GPS ?

The first Satellite of Indian Regional Navigation Satellite System (IRNSS) constellation, IRNSS-1 will be launched by PSLV-C22 in 2013.

Indian Regional Navigational Satellite System (IRNSS)-1, the first of the seven satellites of the IRNSS constellation, carries a Navigation payload and a C-band ranging transponder. The spacecraft employs an optimised I-1K structure with a power handling capability of around 1600W and a lift off mass of 1380 kg, and is designed for a nominal mission life of 7 years. The first satellite of IRNSS constellation is planned to be launched onboard PSLV in 2013 while the full constellation is planned to be realised during 2014 time frame.

 

[LETHALFORCE]

http://www.eotec.com/images/IRS_-_Current_and_Future_-_Web.pdf

Indian Remote Sensing Satellites

 

[afako]

RISAT 1A and RISAT 3 to be Launched

http://content.indiainfoline.com/wc/budget/FY-2013-14/eb/sbe90.pdf

Earth Observation
-
New Missions (Future EO Missions including RISAT
-
3) Indian Earth Observation program is directed towards providing continuity of EO data for resource management applications and enhancing the imaging capability. Towards this, it is planned to undertake development of future EO missions and RISAT-3 satellite.

RISAT-1A: RISAT-1A is a follow-on mission to RISAT-1 with C-band multi polarised Synthetic Aperture Radar having capability of imaging under all weather conditions

Lots of Gems like:

GSAT 15 to have GAGAN Payload and will complete GAGAN Programme.

India to have 2 Space Observatories: Astrosat 1 and Astrosat 2.

 

[sayareakd]

Re: RISAT 1A and RISAT 3 to be Launched

can that radar track cruise and ballistic missiles ??

 

[LETHALFORCE]

Re: RISAT 1A and RISAT 3 to be Launched

can that radar track cruise and ballistic missiles ??

SAR, can track submarines too.

 

[shuvo@y2k10]

Re: RISAT 1A and RISAT 3 to be Launched

i think india needs to fastrack gagan and inrss programme.can the irnss programme of seven satellites be expanded to about 30 satellites giving us global coverage like gps,glonass,beidou etc?

 

[WMD]

Re: RISAT 1A and RISAT 3 to be Launched

RISAT series r spy satellites, right?

 

[sayareakd]

Re: RISAT 1A and RISAT 3 to be Launched

RISAT series r spy satellites, right?

no they are earth observation satellite, that is all together different matter that our govt through these satellite looks at the place of interest in other countries

 

[afako]

Re: RISAT 1A and RISAT 3 to be Launched

The above document is the Official 2013-14 Budget.

 

[afako]

Re: RISAT 1A and RISAT 3 to be Launched

i think india needs to fastrack gagan and inrss programme.can the irnss programme of seven satellites be expanded to about 30 satellites giving us global coverage like gps,glonass,beidou etc?

A Modified GSLV should be able to put 2.7 Tonnes into GTO. So IRNSS weighs like 1.3 Tonnes. 1 Launch = 2 IRNSS in Place.

We need 15 GSLV Launches to complete Indian GPS.

Either 2 GSLV Launches or 1 GSLV+1 PSLV every year would enable us to put 3 to 4 satellites in place. So it will take a decade to complete.