Difference Between GPS and Chartplotter (With Table)

The Global Positioning System (GPS) and Chartplotter are two technically different terms but can be used interchangeably. Both the terms are used in the coordination that will provide the exact position of an object. Global Positioning System is a type of navigation system that is based on satellite whereas Chartplotter is a device that is used to integrate the GPS data with an electronic chart.

GPS vs Chartplotter

The difference between the global positioning system and Chartplotter includes information regarding the location. The location of GPS can be identified in the form of longitude and latitude coordinates that too in many different forms. Whereas the Chartplotter uses this same information differently and shows the exact location on the map.

The Global Positioning System was earlier known by another name, and that was Navistar GPS. It consists of 24 satellites in 6 orbits that revolve around the earth every 12 hours. The development of GPS was for use by the military people and was considered less precise for the civilians around the earth.

The Chartplotter is used as a device or as a stand-alone computer that displays the exact location of any object on a map and also plots very accurate places. To be able to see a complete navigation package, the GPS chips are embedded into the chart plotter.   

Comparison Table Between GPS and Chartplotter

Parameters of ComparisonGPSChartplotter
DefinitionIt is a satellite-based technology used for the navigation of objects and places.It is a computer device that provides a more accurate visual display of objects with the help of GPS.
FunctionIt performs main three functions and that are the space segment, control segment, and user segment.It gives information about water depth, obstruction on the way, and the environment.
CostGPS systems are quite cheapThese are expensive as compared to GPS
CharacteristicsIt does not need a screen rather, it gives the information in numeric formIt is very easy to use and also needs a screen to view graphics
UsesGPS is mainly used for location purposes in mobile phones, cars, etc. It is also used in tracking, surveillance, and studying atmospheric conditions.Mostly used in marine navigation to have a view of the ship and other objects around it.

What is GPS?

The Global Positioning System (GPS) was developed for military purposes in the year 1973. It was mainly used for positioning, navigation, and timing services. GPS consists of three key components that are GPS satellite, GPS receiver, and computer software that help to interpret the signals and be able to find the geographical position of the user. This technology gained a lot of importance because it used the satellites that are present in the earth’s orbit and measured the distance between the satellite and the user.

According to some of the reports, there are around 30 satellites that are constantly revolving around the orbit at a very high altitude and emit the high-frequency radio signal that has been received by the GPS receivers, which is one of the important components of GPS. The GPS is controlled by the US government, which is the reason it is very difficult to assess. It is mainly used to assess the position of military, civil and commercial users. Hundreds of users are trying to decode the satellite signals that have been installed in automobiles, submarines, etc.

What is Chartplotter?

A Chartplotter needs a GPS to interpret the position given in the form of latitude and longitude in a graphic view. So, it can be said that all the chart plotters can use the GPS, but without a Chartplotter, GPS is much simpler to use. Chartplotters can be used in both ways, either external or internal. The detection of various locations can be done by the Chartplotter user interface.

The standard computer and various other devices operate on some software while some other run-on advanced software. The use of a highly efficient Chartplotter gives a three-dimensional view for fishing and other obstruction in the route. The data collected by the Chartplotter can be stored for future use as well. That is the reason there is a minimal chance of losing the data. 

The Chartplotter can be of two types and have been provided by the device, and that are Raster charts and Vector Charts. The raster chart shows a picture of a paper map according to the geographical coordinates, whereas the vector chart makes a replica of that chart by using the raw data from the coded information.

Main Differences Between GPS and Chartplotter

  1. GPS is a satellite-based technology used for navigation purposes, whereas a Chartplotter gives a graphical view on a map.
  2. GPS gives numeric code for the location in the form of latitude and longitude hence difficult to interpret while a Chartplotter presents an understandable image of the location.
  3. GPS is a complex system involving satellites and proficient computers, whereas a Chartplotter is a simple system showing objects on the map.
  4. GPS can be used on its own, whereas Chartplotter needs GPS internally or externally to work.
  5. A GPS device is only used by expert navigators who are experts in reading longitudes and latitudes. On the other hand, a Chartplotter can be read by a person having less knowledge of navigation.

Conclusion

The Global Positioning System and Chartplotter are technically two different terms but have gained a lot of importance. The applications of both terms have stretched from maritime navigation to food delivery apps. As humans are continuously expanding their horizons, these systems have led to commercial space as well. There is no denying that they are the focal point for the information age and will continue to be so for the years to come.

In a nutshell, it can be stated that chart plotters and GPS do not operate in seclusion. Rather they complement each other. A Chartplotter can be conjured as a visual impression of our surroundings but for nautical navigation. Hence, it can be drawn that chart plotters are a narrower technology than GPS. 

References

  1. https://www.worldscientific.com/doi/abs/10.1142/9789814287951_0088
  2. http://acwi.gov/sos/pubs/2ndJFIC/Contents/P09_Hall_12_18_09_abstract-for-papers.pdf

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