two stage superheterodyne correlation receiver for three channels, high speed digital signal processor, real time management computer and a powerful radar data processor. It can track 64 targets in range, azimuth and height and guide eight missiles simultaneously in ripple fire mode towards four targets. The radar has advanced ECCM features. The Rajendra derivative on a BMP-2 chassis and to be used by the Indian Air Force is known as the Battery Level Radar-II whereas that for the Army, is based on a T-72 chassis and is known as the Battery Level Radar-III. The Army version also consists of the Battery Surveillance Radar (BSR). BSR is a track vehicle based, long range sensor, interfaced with the BCC. It can detect and track up to 40 targets in range and azimuth up to a range of 100 km. Long range target acquisition is performed by the 3D Central Acquisition Radar (3D CAR), which is a long range surveillance radar that can track up to 200 targets in Track while Scan mode (detecting, tracking and processing) in three dimensions at a range of 180 km. It provides azimuth, range and height coordinates of targets to the Group Control Centre (GCC) through secure communication links. The data is used to cue the weapon control radar. Platforms The Army's radar and launchers are based on the T-72 chassis built by the Ordnance Factories Board's Ordnance Factory Medak to accompany the Army's fast moving armoured formations. The Air Force versions use a combination of tracked and wheeled vehicle. The Air Force Akash launcher consists of a detachable trailer which is towed by a Tata truck, which can be positioned autonomously. The Air Force launcher is designed by Larsen & Toubro jointly with DRDO. Both the Army and Air Force launchers have three ready-to-fire Akash missiles each. The launchers can slew in both elevation and azimuth. The Army Self-Propelled Launcher (ASPL) is 360 degrees slewable and its arc in elevation is from 6 to 60 degrees. The Akash Air Force Launcher (AAFL) is 360 degree slewable, in elevation it can fire from 8 to 55 degrees in all directions depending on the mode of deployment. Akash Air force launcher features an All electro servo drive system for fully automated and remote operation. To enable the Akash group to perform self-sufficient in the combat zone, a number of supporting specialist vehicles have been designed and developed. They