Dhanush is single stage missile that means entire missile will go up and come down. So it has big RCS.
Problem is that we dont have big land area to test this missile defence, unless we put interceptor and radar on the ship or target missile on ship, as we dont have Agni 1 launch system from ship, we are not testing A1. Other option is to use floating test range, which has either the target missile or interceptor on it. DRDO is now making floating test range. Hope they make it fast and test it against actual RV.
here is the info on floating range
http://www.thehindu.com/news/nation...for-missile-defence-system/article7622922.ece
Work begins
The construction of the range, which has just started, might take at least three to four years for the ship to be ready to conduct the first trial, sources said.
“It will pave the way for conducting trials for different trajectories, varying altitudes and also for higher ranges. We can go up to 1,000-1,500 km without any problem. Currently, we have to conduct simulation tests for longer ranges. Once, this FTR is ready we will be able to carry out live tests,” the sources said.
another site
http://www.indiandefensenews.in/2015/11/ind-take-india-building-its-own-massive.html
India is building a unique floating testing range — essentially a huge ship — to overcome the limitations imposed by the land mass for carrying out missile tests of varying ranges for the two-tier ballistic missile defence (BMD) or Advanced Air Defence System to protect important Indian cities.
The system seeks to engage and destroy incoming enemy missiles at different altitudes in the endo and exo-atmospheres regimes. The first phase of the program envisages development of interceptors to annihilate incoming missiles with a range of 2,000 km, while the second phase aims to build such weapons to destroy missiles with a longer range.
India's Advanced Air Defence System will waylay Ballistic Missiles and Destroy it in Mid-Air
India has so far conducted 10 interceptor missile tests, eight of them successful. Most of the trials were conducted in the endo-atmosphere, and a few in the exo-atmosphere. The first phase of the system is expected to be deployed after some more interceptor trials in deployable configuration. Official sources told The Hindu that currently the missile testing range on Wheeler Island posed certain limitations as people needed to be evacuated from the villages every time a trial took place. More important, the range of the missile had to be confined to less than 300 km. Also, contrastive trajectories could not be tested.
To overcome these problems, scientists at the DRDO designed the floating testing range — a huge ship with a designated displacement equivalent to 10,000 tonnes. The state-of-the-art range would have many facilities such as a launch-pad, a launch control center and a mission control centre.
Construction Begins
The construction of the range, which has just started, might take at least three to four years for the ship to be ready to conduct the first trial, sources said.
It will pave the way for conducting trials for different trajectories, varying altitudes and also for higher ranges. We can go up to 1,000-1,500 km without any problem. Currently, DRDO has to conduct simulation tests for longer ranges. Once, this FTR is ready it will be able to carry out live tests.