Radar and Wind Turbines: A Guide to Acceptance Criteria

A wind turbine placed in the vicinity of a primary radar system (PSR) can impact the performance of that system. This paper discusses criteria by which wind turbine placement can be assessed. The effects considered are desensitization overhead and shadowing. The criteria have been implemented in a wind turbine acceptance program that is going to...

Range-dependent sonar performance modelling during Battlespace Preparation 2007

Spatial and temporal variations in sound speed can have substantial effects on sound propagation and hence sonar performance. Operational oceanographic models can provide forecasts of oceanographic variables as temperature, salinity and sound speed up to several days ahead. These four-dimensional forecasts can be used as input for a sonar...

Long-term observations of transport, eddies, and Rossby waves in the Mozambique Channel

Data from an array of current meter moorings covering a period of two and a half years are used to estimate the varying transport through the Mozambique Channel. The total transport during this period is small. Below 1200 m the transport is weak but a prominent deep western boundary undercurrent with cores at 1700 and 2200 m is found that...

At-sea Real-time Coupled Four-dimensional Oceanographic and Acoustic Forecasts during Battlespace Preparation 2007

Systems capable of forecasting ocean properties and acoustic performance in the littoral ocean are becoming a useful capability for scientific and operational exercises. The coupling of a data-assimilative nested ocean modeling system with an acoustic propagation modeling syste was carried out at sea for the first time, within the scope of...