What Is Navigation?

Navigation is the system that enables us to reach the destination in the shortest and fastest way. Thus, even if we have never been to an address before, we can easily reach an address without asking for the address and without getting lost.

The navigation system tells the direction to go both in the form of a map on the screen and with voice commands.

If the direction to go is missed, it recalculates and gives the most up-to-date route according to your location.

In summary, we can describe navigation as an application that finds the most convenient way to go from one point to another.

We answered the questions of what is navigation, what does it mean and what does it do, but how does this system work?


How Does the Navigation System Do These Operations?

First of all, it is necessary to know the contents that make up the navigation system. The navigation system consists of three layers.

  1. Hardware
  2. Software
  3. Map


It is the system that uses the software and the map to determine our position on Earth by using GPS signals and enable us to reach the point we want to go with this information. It usually works via the touch screen. There are PND, inCar and Mobile versions.


It is a system that displays the coordinate information received from the device on the map, draws the optimum route to the desired point with the map information, and makes visual and audio guidance, that is, makes the map and the hardware talk.


It is the most important unit of the navigation system. Unlike the normal map, it contains information such as direction and speed information of the roads, prohibitions, restrictions as well as POI (Point of Interest) information. In this way, it is possible to see what’s around on the map and to determine the destination from these points in cases where the address is not known.

Navigation system; It is produced by integrating many information in different disciplines such as address, transportation network system, road database into the system in an up-to-date and healthy way.

In this way, the shortest and optimum route to the destination(s) you have determined can be determined and you can reach comfortably with audio and visual guidance.

How Does the Navigation System Work?

Using GPS signals, you can find the GPS signals on the digital maps obtained from satellite photographs and terrestrial scans. We can make entries. In fact, these entries are nothing but coordinate information, and the system can reach the destination from the coordinate it is located by using the direction information (Ex: Road importance order, Main road, Intersection, Intersection … One Way, Vehicles Cannot Enter, Bridges … etc.). It calculates according to more definitions.

In general, we can say that it uses a method similar to Graphs based on Discrete Mathematics.

When the address is entered into the system, it draws a route and guides us to the destination we previously determined with audio warning and visual information. While navigating, the coordinate information from the GPS receiver is constantly monitored by the navigation system. In case of any deviation from the determined route, a new route is drawn from the current location to the destination.

This process is continued until easy access to the right point is achieved. With all these features, the navigation system also functions as an address and place book. In addition to the POIs in the system, personal POIs or favorites can be added.

In addition, the system; Fast, Short, According to the Traffic Status TMC-Traffic Message Channel-(Traffic message channel) is supported by incoming information.

With this system, it can suggest alternative routes in case the traffic events on the route affect the navigation.

How to Use Navigation?

  • • First of all, by passing over all roads with GPS, all the information about the roads and the shapes and curves of the roads etc. are obtained. All of its features are collected from the field. In the collected data, speed information of the road, turn bans, etc. There is also information such as
  • • This collected data is used by navigation software such as IGO, Garmin, TomTom etc. loaded into a navigation software.
  • • The user, who sets out with this map and the navigation device with the software installed, sets a destination using the interface of the software.
  • • The GPS inside the device takes the current coordinate, that is, the location, as the starting point. It draws a route between the current point and the determined destination by scanning all the roads up to the determined destination, calculating the route with the preferred routing (shortest, fastest, most economical, etc.).
  • • While in motion, this calculation system works continuously and the system informs the user with voice commands about how many meters are left at the intersections that need to be turned. For example: If you need to turn left after 300 meters from the drawn route, the system will activate and warn you “turn left after three hundred meters”.

  • • When 100 meters from the intersection according to the drawn route, the system is activated again and warns the user by saying “turn right after a hundred meters”.
  • • That is, all sounds in the system are pre-recorded. The system warns the user by running the sound file suitable for the route. If you want anyone you want to give you directions, just record their voice. Anyone whose voice you can record can give you directions.