Abstract: A design of a chaotic phase-coded signal formation and processing system is proposed,which can be used for surveillance radar.And three types of signals: a chaotic binary coded signal,two types of combination of chaotic binary and linear frequency modulated signal,a chaotic Taylor 4-phase coded signal are studied,including their principles,design process and weighted network method for side lobe suppression.All the simulation results meet the requiments of system,thus improving the low-interception probability and anti-jamming capability of the radar system.