Which radar system provides fire control for both air and surface targets?

The SPQ-9B radar system is designed to provide fire control for a variety of threats, specifically designed to track and engage both air and surface targets. This capability allows it to be effectively utilized for missile guidance, enhancing the ship's defensive posture against aerial threats such as incoming missiles and enemy aircraft, as well as serving to engage surface targets.

The SPQ-9B's multifaceted operational ability makes it a critical component in a naval combat system, ensuring a comprehensive approach to threat detection and engagement. Its advanced tracking capabilities and integration with weapon systems provide a dual-role advantage, allowing a vessel to defend itself effectively in both dimensions of naval warfare. This makes it an essential asset for modern naval operations, where threats can come from both the air and the sea.

In contrast, other systems listed have more specialized functions. For example, the CIWS focuses primarily on air defense against short-range threats, while NSSMS is more dedicated to missile defense, and SSDS encompasses broader ship defense capabilities but does not serve as the primary fire control for both types of targets like the SPQ-9B does.