The radar image is a source of much information useful for navigation. In coastal areas, information obtained from the radar image is used for position fixing, maneuvering in traffic separation schemes, approaching ports, etc. In open waters, radar is essential when planning anti-collision maneuvers and for conducting observations to detect dangers early. The article presents problems related to matching the radar image to a nautical chart. In the final stage of this task, geodetic adjustment methods are used to precisely align both images. Such matching enables the determination of the vessel’s position using the comparative method.Every navigator notices a great similarity between the radar depiction of the coastline and its counterpart on the chart. The radar image constitutes the most faithful representation of the space surrounding the ship, along with all surface objects located within it. It is a two-dimensional visual representation of the environment in which the ship is located. (…)
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Source: Logistyka Magazine
Matching radar image with nautical chart using the adjustment method – PDF file for download