Please provide source of your images, it seems ISRO has downgraded it's website, there was a lot of information before changing website, now I can't find anything about future projects.
Its from slides by Mr O.V. Raghava Reddy, Project Director, Oceansat3/3A, Scatsat -1 ...
The theme was User Interaction Meet 2016 held on Feb 03, 2016
Its not from ISRO website, rather from
National Remote Sensing Centre - government website
Link;
http://nrsc.gov.in/sites/all/pdf/modnrscUIM _Raghava Reddy_1.pdf
Thats why information is very reliable as its from NRSC themselves and from a project director.
@PARIKRAMA RISAT-2A and 1A are they going to be Israeliy or Indian made?
+ If i'm reading your charts right, by the end of 2020 ISRO should have put another 7 (military) observation sats into space?
+ no news on the GSATs for the IAF and IA?
The most important part is the X band SAR built by Israel Aerospace Industries IAI. Its basically the indianised version of TecSAR launched by PSLV in 2008 with improvements and changes.. So in essence its a Israeli Satellite MKIsed as ISRO had made all the system bus components.
The RISAT-2 Israeli radar spacecraft launched in 2009 was rushed into service ahead of the all-Indian RISAT-1. This is because the Indian military knew that the Israeli radar is more specialized for military imaging and could provide intelligence imagery within a year of the 2008 Mumbai attacks tied to Pakistan. Israel operates an identical reconnaissance satellite called TecSAR (picture below).
Identical to India’s RISAT-2 this Israeli TecStar spacecraft is minus its large solar arrays. Israel’s TecSar has been an important asset for monitoring Iran. The 10 ft. antenna dish can obtain 4-5 in. resolution images day or night and in all weather conditions. Photo Credit: Israel Aerospace Industries.
RISAT-2 with its 10 ft. dish antenna is far more suited for intelligence gathering than RISAT-1/1A.
RISAT-2 has provided India with meaningful intelligence about Pakistan and potential Al Qaeda threats.
The mesh dish on RISAT-2 can physically focus radar spot beams to obtain images with a resolution as high as 4-5 inches, according to Israeli defense officials. India now has this capability, but it is highly classified.
India obtained the RISAT-2 radar from Israel in exchange for launching Israel’s identical TecSat military imaging satellite now used heavily to monitor Iran especially at night. Iran even chided India over its decision to launch the TecSar.
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C Band SAR is indigenous and so is the whole satellite.. The RISAT-1 radar will be capable of 3-20 ft. imaging resolution day or night and in any weather conditions. In addition to this high resolution mode it can also operate in two lower resolution modes depending on the type of targets being imaged. It is designed to transmit radar data at up to 640 Mbps.
The spacecraft carries a 20 x 6 ft. rectangular radar panel below its main bus that sprouts solar arrays spanning about 40 ft.
Previous Indian remote sensing satellites relied on optical and infrared sensors while RISAT-1 uses an indigenously developed C-band synthetic aperture radar (SAR) operating in multi-polarisation and multi-resolution modes.
Another difference between the two spacecraft is that virtually every technical detail about the Indian made RISAT-1 is unclassified and easily available online by simply Goggling RISAT-1. But data on RISAT-2 built in part by the famed Israel Aerospace Industries (IAI), is much more sparse. India even declined initially to release images of the RISAT-2 launch on a PSLV rocket.
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about 7 satellites point.. Yes you are correct
India as of now operates around 12 active Earth Observation satellites with limited number for military usage. The list is here
List of Earth Observation Satellites - ISRO
.. we will add 7 more in this observation list by 2020.. Some will be replacement, some will be new.. but primary coverage via SAR antenna would continue for Indian subcontinental region.
The idea is 2 existing SAR antenna satellites + 2 new - RISAT 2A, 1A followed by 5 cartosat family which has 2 replacements and 3 new satellites in cartosat 3 series..
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GSATs
GSAT 7, GSAT 7A/ INSAT4F will be for DEDICATED MILITARY COMMUNICATIONS.
GSAT 7 was launched in 2013
here is the link
List of Communication Satellites - ISRO
GSAT 7A / INSAT 4F should be launched within this year via Ariane Space.
@PARIKRAMA
About the RISAT series, wasn't it about to be increased the fleet to a total of 4-5 by the period 2017-19. But here as you post, its only replacing the first 2.
The whole fleet will get increased.. 4 SAR satellites will be there.. RISAT1, 2, 1A, 2A and cartosat family 2 replacement + 3 new
Cartosat family will provides us with 0.25 m resolution ..
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edited to add
@Abingdonboy
The IRNSS one transponder is for dedicated military usage as of now.. and it will remain so as a back up channel for communication...