How the S-400 uses multiple radar trucks to scan the sky at once

The S-400 relies on the 91N6E panoramic radar as its primary detection unit. Operating in the S-band, this heavy-duty radar scans a 360-degree area to spot large targets. It provides a massive detection range of up to 600 kilometres.

To eliminate blind spots near the ground, the system deploys the 96L6E radar. This C-band unit searches for cruise missiles and drones at low altitudes. It effectively operates up to 300 kilometres away in dense or mountainous terrain.

The system integrates supplementary units like the Nebo-M VHF mobile radar station. This equipment provides a detection range of 400 kilometres. It enhances the network's early warning capabilities against complex or stealthy aerial threats.

When a threat is confirmed, the 92N6E multi-function radar takes control. Operating in the X-band, this fire control unit locks onto targets up to 400 kilometres away. It uses narrow radar beams to achieve high accuracy for missile guidance.

By networking these various radar units together, the S-400 builds a massive battlefield picture. The combined radar suite maintains a wide area search capability. It tracks up to 300 different aerial targets simultaneously without losing focus.

While monitoring the skies, the system automatically prioritises the most dangerous incoming objects. The 92N6E engagement radar can simultaneously track 36 priority targets. It actively guides up to 72 missiles to intercept them at the exact same time.

The entire radar network is managed by the 55K6E command post, which processes the radar information. To ensure maximum survivability, this command unit can be positioned safely. It maintains control even when situated up to 100 kilometres away from the fire units.