satellite navigation and chartplotter
A marine satellite navigator is a device that receives signals from various satellite navigation systems (such as GPS, Beidou, Galileo, etc.) and can provide information such as the position, speed, and course of the ship. GPS satellite navigation chart plotter is a device that combines GPS positioning function and electronic chart display function. It can display the real-time position of the ship and surrounding sea conditions, channels, beacons and other information on the screen.
The accuracy of marine satellite navigation is affected by many factors, such as satellite signal strength, interference, atmospheric delay, etc., and is generally in the range of a few meters to tens of meters. In addition to being affected by the satellite navigation device, the accuracy of the GPS satellite navigation chartplotter also depends on the accuracy and update frequency of the electronic chart, which is generally within the range of a few meters to hundreds of meters.
The main function of marine satellite navigation is to provide basic navigation information of the ship, but it cannot intuitively display the surrounding environment of the ship. It needs to be cooperated with other equipment (such as radar, sonar, etc.) or manual observation to avoid risks such as collision and stranding. The main function of the GPS satellite navigation chart plotter is to provide visual navigation information of the ship. It can display the ship's track, speed, heading, etc., as well as surrounding ships, obstacles, water depth, current and other information on the electronic chart, which can help Captains make better decisions.
Marine satellite navigators and GPS satellite navigation chartplotters are two different navigation devices. They each have their own advantages and disadvantages. Generally, ships will use them at the same time to ensure the safety and efficiency of navigation.
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