The radar is a device able to detect the distance, the position and the possible movement of objects such as boats or land surveys.
The radar, Radio Detection And Ranging, allows the detection of targets, know the distance, direction, size and any movement even in conditions of poor visibility.
In the maritime field it is very useful to determine the presence of other vessels or outline the geographical configuration of the coast, thus limiting the possibility of collisions.
The radar transmits radio waves which, when they meet an obstacle (target), go back to be analysed by a receiver which then converts them into graphic information to be analysed on a display.
The radio waves are transmitted at high power and in a directional way, over the entire arc of 360° thanks to the antenna that rotates continuously.
The radar is usually composed of an antenna that can be opened or radome (ie enclosed in a plastic container), while the display can be offered by a dedicated display or a marine GPS or a multifunction display. When the radar is available on a Nautical GPS, the display can appear in overlay with the electronic chart, so that the user can compare the readings of the two technologies at the same time.