Array Shape Estimation using Fiber Optics Shape Sensing

Towed acoustic arrays are used by the US Navy to detect submarines. Knowing the shape of the array is critical for achieving optimal system performance. There is a need for Array Shape Estimators (AES) with greater accuracy, ease of use, and reduced cost. The research proposed here is targeted toward fulfilling these needs. We plan to work toward a fiber optic sensor that will measure the shape of a towed array with minimal input from telemetry sensors. During this phase I effort, we anticipate demonstrating proof of concept for some key issues including: -Demonstrating the possibility of shape sensing through 1km of fiber -Estimating the achievable system performance -Measuring the affect that power loss at optical connectors has on system performance