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WR 2120 weather radar in support of navigation safety – operational experience

Dyrcz Czesław

Annual of Navigation

2024

No. 29

1--15

In the 1950s, radars began to be used for meteorological purposes, i.e. to detect and track storms and precipitation. A new field of knowledge has emerged: weather radar, which studies the differences between the reflections of radar signals obtained from different types of clouds and precipitation. Weather radar is a device used to observe precipitation: its location, intensity, type and movement. This data is used in forecasting the future location and intensity of rainfall. The general principle of operation of meteorological radars, and their construction, are like other types of radars, and the parameters and method of performing measurements (wavelength, resolution, range, scanning method, etc.) have been adapted to the measurements of meteorological objects. The aim of the article is to present the basics of radar meteorology by illustrating the structure and principles of operation of a weather radar, presenting the WR 2120 radar installed at the Polish Naval Academy along with its products, and the impact of the information obtained on navigational safety at sea. The main research methods used during the implementation of the article were the analysis of literature related to the topic and observations made on the WR 2120 weather radar. An obvious fact is the short period of observations due to the operating time of the radar in the METOC laboratory. The general conclusions that arise are the advantage of weather radars over other means of transmitting the meteorological situation in the ability to observe "live", which is particularly important in detecting and tracking zones of intense rainfall and storms that affect safety. The current use of weather radars at sea is related to fixed installations (permanent offshore installations, drilling ships, platforms, floating oil storage facilities, etc.) where there is no need to use stabilization of antenna arrays. The future and widespread use of weather radars at sea may be related to the use of antenna stabilizing platforms. However, this is currently the future. Looking at military applications (air, landing operations, SAR, RAS, etc.), it will probably be possible very soon.