PSU Bharat Electronics Limited's Software Technology Center at Bangalore has received the Software Engineering Institute's (SEI) Capability Maturity Model (CMM) Level 4 rating.The BEL Software Technology Center is part of BEL's Central Development & Engineering Group. It develops software largely for defence requirements like radar, communication equipment, electronic warfare systems, control systems and global positioning system (GPS), including Embedded Software.The processes of the BEL Software Technology Centre have been assessed with respect to the SEI CMM Framework and the CMM ratings have been awarded after independent evaluation involving analysis and review of software development capabilities, processes and products, a BEL statement said.