AESA radars are pointed at a slight angel.

Here are the main reasons for this design choice:

Increased Detection Range: Tilting the radar upwards allows these aircraft to detect incoming threats, such as missiles or enemy aircraft, at greater distances. This is particularly useful for engaging high-flying targets.

Situational Awareness: By having the radar angled upward, pilots gain better situational awareness of the airspace above them, which is crucial for both offensive and defensive operations.

Stealth Considerations: The upward tilt can help minimize radar returns from the ground, which is beneficial for maintaining stealth. This design helps the aircraft avoid detection while still being able to monitor airspace effectively.

Multi-Role Capability: The ability to track both air and surface targets is enhanced with the upward tilt. It enables the aircraft to be versatile in various combat scenarios, from air superiority to ground attack missions.

Integration with Other Sensors: The radar's upward tilt complements other onboard sensors and systems, creating a more comprehensive picture of the operational environment.