How sensitive are MAD systems?

How sensitive are MAD systems?

• A. Low
• B. Moderate
• C. Very High
• D. Highly

Answer: (D)

MAD systems must detect extremely small magnetic disturbances caused by submarines against the much larger and noisy background of Earth’s magnetic field. The signals they’re looking for are tiny—submarine hulls magnetize and create local field anomalies that move and vary with the submarine’s orientation and distance, often in the nanotesla range relative to tens of microteslas of the ambient field. To reliably pick up such faint signals, the sensors must be highly sensitive and paired with careful noise rejection, calibration, and compensation for aircraft magnetization and environmental noise. That level of capability is described as highly sensitive. The other descriptors would underestimate the signal strength MAD needs to detect, and while “very high” might seem close, the established phrasing emphasizes that the sensitivity is at the upper end of detection capabilities.

MAD systems must detect extremely small magnetic disturbances caused by submarines against the much larger and noisy background of Earth’s magnetic field. The signals they’re looking for are tiny—submarine hulls magnetize and create local field anomalies that move and vary with the submarine’s orientation and distance, often in the nanotesla range relative to tens of microteslas of the ambient field. To reliably pick up such faint signals, the sensors must be highly sensitive and paired with careful noise rejection, calibration, and compensation for aircraft magnetization and environmental noise. That level of capability is described as highly sensitive. The other descriptors would underestimate the signal strength MAD needs to detect, and while “very high” might seem close, the established phrasing emphasizes that the sensitivity is at the upper end of detection capabilities.