Deep water magnetometer/tilt sensor

This paper describes a deep water magnetometer with tilt sensing capabilities and a deployment depth of up to 6000 meters. Our goal was to develop a very high reliability sensor for integration into cabled acoustic systems. The telemetry is compatible with deep water acoustic sensors, allowing for a complete vertical array solution. The sensor allows for hard iron calibration, providing bearing readings within ±2° accuracy and pitch/roll readings within ±1° accuracy. Low profile, low cost, low power, high reliability, and proven telemetry interface are all key requirements for success. Our solution addresses each of these constraints.