The Shaanxi Y-8 is the Chinese version of the Antonov An-12 transport aircraft. Production in the Soviet Union ended in 1973, but it is still being built and developed in China.
The KJ-200 is a version equipped for airborne early warning and control with a prominent flat antenna on top
This model also includes the electronic warfare version wiht a load of antennas.
Wikipedia has more information about the original.