Pop Group**

Pop Group** is a naval fire-control radar for the SA-N-4 naval surface-to-air missile (SAM) system. It is similar to the ground-based Land Roll** radar used with the SA-8 Gecko ** SAMs.

The assembly has three antennas. The top-mounted 2.0-m (6.1-ft) large truncated paraboloid antenna rotates independently of the lower assembly and is thought to be for target search. Two inverse Cassegrain antennas of different sizes are mounted on the front below the target search radar. One...