What is the detection range of the Sentinel A4 radar?

What is the detection range of the Sentinel A4 radar?

• A. 100 km
• B. 75 km
• C. 40 km
• D. 60 km

Answer: (B)

Detection range is the distance at which a radar can reliably detect a target under defined conditions, and it comes from how much power the radar can transmit, how sensitive its receiver is, and how well the system can distinguish a target from clutter. The Sentinel A4 is a mid‑range air‑search radar designed for early warning and tracking of typical aircraft. Under standard test conditions with a conventional fighter‑sized target, its detection range is about seventy‑five kilometers. This reflects a practical balance between transmitter power, antenna gain, receiver sensitivity, and the processing that filters out ground and atmospheric noise. In practice, the actual range can vary with target radar cross-section, altitude, weather or atmospheric conditions, and nearby clutter. Higher altitude or larger targets can push the detectable range toward the upper end, while small or low‑flying targets, heavy clutter, or degraded conditions can reduce it.

Detection range is the distance at which a radar can reliably detect a target under defined conditions, and it comes from how much power the radar can transmit, how sensitive its receiver is, and how well the system can distinguish a target from clutter. The Sentinel A4 is a mid‑range air‑search radar designed for early warning and tracking of typical aircraft. Under standard test conditions with a conventional fighter‑sized target, its detection range is about seventy‑five kilometers. This reflects a practical balance between transmitter power, antenna gain, receiver sensitivity, and the processing that filters out ground and atmospheric noise.

In practice, the actual range can vary with target radar cross-section, altitude, weather or atmospheric conditions, and nearby clutter. Higher altitude or larger targets can push the detectable range toward the upper end, while small or low‑flying targets, heavy clutter, or degraded conditions can reduce it.