Shivalik: India’s New Generation Warship | Indian Defence Review
AISDN (ATM based integrated ship borne data network)
Shivalik is fitted with third generation Composite Communication System (CCS), intelligent versatile communication system (IVCS), and sophisticated ATM based Integrated Ship Borne Data Network (AISDN) with fibre optics cable throughout the ship. The AISDN provides an integrated backbone network for voice, video, and data communications on a single broad band network. The AISDN has the following objectives :-
* Provide a networking backbone to integrate the data of weapons and sensors to all command and control systems as well as communication systems.
* Share weapon sensor data with each other in acceptable formats.
* Provide backbone to integrate internal and external communication systems.
* Monitor the health and status of command, control and communication systems at a central location.
The AISDN system provides the required flexibility and redundancy to the users on board. ATM (Asynchronous Transfer Mode) is a standardized digital data transmission technology and is a dedicated- connection switching technology that organizes digital data into 53- byte cell units and transmits them over a physical medium using digital signal technology. ATM has been seen as the ultimate networking technology that will allow broad band networking for the future. However fast Ethernet and gigabit Ethernet have brought more bandwidth to the LAN technology and is being preferred.
CAIO (Computer Aided Action Information Organization)
Towards ensuring a multi sensor, multi weapon scenario, the Project 17 Frigates are fitted with advanced CAIO system. The CAIO system collates all sensor data for exploitation, does threat evaluation, controls and designates weapon system. In CAIO, there is central availability of all sensor data to the command for supporting decision making. This ensures no duplicity of “action taken”. CAIO also ensures sensor data fusion. It allows for “informed” decision by command due overlay of radars, EW, and other available inputs. CAIO also enables central disposition and receipt of data to and from other platforms through data link system. The CAIO for Project 17 ships have been jointly developed by Indian Navy with foreign expert agency.