Affordable Small Diameter Heading Sensor

The detection range and bearing resolution of towed array sonar is limited by the fact that the towed array cable will bend due to ocean currents and towing vessel maneuvers. There is therefore a need for sensors that are able to measure and quantify the attitude at intervals along the cable. The sensor has to be accurate enough to meet Navy requirements and small enough to fit inside the towing cable. We propose to develop a novel heading sensor that can be integrated with the towing cable. The sensor will provide highly accurate magnetic heading and roll angle of the cable. The sensor is based on novel miniature magnetic sensor technology and will be packaged to withstand the high pressure and low temperatures of submarine missions. This heading sensor will improve towed array sonar range and bearing accuracy. The heading sensor will be inexpensive, small, and consume only a small amount of power.