A radar-based tactical decision aid concept for ship route planning and task group positioning


  1. Thomson, A.D.
Corporate Authors
Defence R&D Canada - Ottawa, Ottawa ONT (CAN)
New concepts for sensor-based tactical decision aids that can be used for ship positioning or route planning are investigated to provide input for current and future mission planning tools that are required by the Royal Canadian Navy for environment-based optimization. The detection performance of naval radar in the direction of a known threat is calculated as a function of the environment and the ship position around the threat location. The required radar propagation and clutter calculations use data from an Environment Canada numerical weather prediction model and a terrain elevation database. The base detection performance data are reduced into metrics that can be displayed on a map and which provide a simplified relative view of the radar performance as a function of the ship’s location. Metrics were calculated, using three radar parameterizations corresponding to three different frequency bands (X, C, S), to represent the “average” radar detection performance and the danger due to the presence of horizontal multipath nulls. The “average” metric and the “worst case” metric were found to provide the most useful information for determining an optimal ship position or route with respect to the threat location. It was found that the “average” metric showed less variability at lower frequencies since transmissions at lower frequencies are refracted less, resulting in fewer multipath nulls near the surface and fewer or no horizontal multipath nulls. This sugg

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Report Number
DRDC-OTTAWA-TM-2012-136 — Technical Memorandum
Date of publication
01 Dec 2012
Number of Pages
Electronic Document(PDF)

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