Abstract: In the complex electromagnetic environment of modern warfare, the early warning and air defense combat system based on netted radars is an inevitable choice to counter threats posed by stealth combat aircraft, loitering munitions, drones, hypersonic missiles, and other new types of combat assets that form multi-dimensional and layered penetration threats. The collaborative architecture of a netted radar system is crucial for achieving a significant increase in system effectiveness. A design scheme for a collaborative system of netted radar based on cloud-edge-end architecture is proposed in the paper. A multi-station spatio-temporal synchronization method is introduced, featuring high-precision Beidou equipment as the time-frequency synchronization reference. A software-defined radar implementation scheme and a two-level control resource management system are designed. The collaboration modes and types of tasks that the system can support are elaborated upon, with the resource management mechanism detailed, which uses sub-tasks as the smallest granularity. For task-level and parameter-level collaborative tasks, the real-time remote closed-loop feedback control principle of the netted system is revealed. Finally, an introduction to the pre-plan design process of this system is provided.