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Tools for multi-aspect data gathering and sensor fusion

At long range, only the highlight echoes are available for classifying targets as minelike; their variation with aspect provides vital classification clues. Gathering this data with experimental equipment presents new challenges for planning, operation and post processing. The course of the ship varies from minute to minute, as it attempts to follow the tracks between waypoints. the sonar array orientation must compensate for the motion, to maintain the sonar footprint over the target. This task is relatively straight forward with the wide sector angels and large range extent of in-service minehunting sonars. Some experimental wide band sonar modules however only process a few tens of meters of range extent. Skilled operators, low seastage and graphic tools are then needed to acquire the target echo. DRA is writing software modules to visualize and plan the mine hunting strategy and fusion of data in such scenarios, aimed at trials planners, sonar operators, and processing engineers.