India’s RISAT-1 High Resolution SpotLight Polarimetric Image

[Kinetic]

All India Radio Super Power Transmitter, Bengaluru
(Date of Pass:20-May-2014, Look Angle:41.970)

The radar is viewing from left to right. Transmit tower appearing as bright targets and its top is displaced towards the radar from its true position on the ground (called as layover effect). The true position of the tower is appearing as bright cross as marked in the figure. The Radar shadows can also be seen in the figure. The height of the tower is computed from the image as 105 m. It was found to match with the actual height.

Howrah Bridge, Kolkata,
(Date of Pass:2- Apr -2013, Look angle :42.940)

The radar is viewing from right to left. Howrah bridge is a cantilever bridge appearing as bright target with even and odd polarized returns. Hoogly river is appearing as blackish green due to very low back scatter and some depolarized return.

Namma Metro Station, Peenya, Bengaluru
(Date of Pass:20-May-2014, Look Angle:41.970)

The radar is viewing from left to right. The metro station roof is made of fiber material with metallic support structure which is appearing as odd bounce target. The elevated metro corridor is appearing as depolarized target.

 

[Kinetic]

What is the military expect of this? This can be dire directly used by Navy to track ships in open oceans and other uses? Why DRDO and ISRO not collaborating to make something like this?

 

[cerberus]

What is the military expect of this? This can be dire directly used by Navy to track ships in open oceans and other uses? Why DRDO and ISRO not collaborating to make something like this?

Well Basically RISAT-1 was not designed as a surveillance satellite, given its reliance on the C-band.
RISAT 2 is Basically a dedicated reconnaissance satellite

 

[Kinetic]

Well Basically RISAT-1 was not designed as a surveillance satellite, given its reliance on the C-band.
RISAT 2 is Basically a dedicated reconnaissance satellite

Whats the issue if C band is used to track the shipd like it can see steel bridge? And yes they should go for a dedicated one.

 

[Gen Padmanabhan]

Whats the issue if C band is used to track the shipd like it can see steel bridge? And yes they should go for a dedicated one.

Nothing, but this is in Polar orbit, not in LEO orbit.

Atleast 3-4 sats are required like this in LEO, including next gen Cartosats.

 

[Kinetic]

Nothing, but this is in Polar orbit, not in LEO orbit.

Atleast 3-4 sats are required like this in LEO, including next gen Cartosats.

And its not costly, when we had such satellite for civilian agency, isn't it strange that our govt still didn't opt for such a radar satellite network!!!

 

[Gen Padmanabhan]

And its not costly, when we had such satellite for civilian agency, isn't it strange that our govt still didn't opt for such a radar satellite network!!!

Right now, intelligence agencies demanding high res LEO Cartosat, not radar imaging, first launch is due in 2016.

But definetely Radar imaging sat will also be deployed in large number.

And its not costly, when we had such satellite for civilian agency, isn't it strange that our govt still didn't opt for such a radar satellite network!!!

BTW, Imaging sats are also required for finding "pre designated" nuclear launching points of Pakistan and China.

 

[Eminent Mainstream Media]

What is the military expect of this? This can be dire directly used by Navy to track ships in open oceans and other uses? Why DRDO and ISRO not collaborating to make something like this?

Such SAR Satellite network along with high band antenna communication satellite and thermal radiation tracking satellites are back bone of strategic forces and special operations command- ISRO has multiple SAR and Communication satellite projects in line- However we have not yet begun on thermal radiation tracking satellites which are capable of even detecting a house on fire-