In our travels, we have been plagued by travel problems: Where am I? Which direction should I go? The emergence of GPS navigation has solved this problem perfectly. The GPS navigation system was originally used by the military to attack and defend the enemy's military system. Now it has entered our daily life. With the civilianization of GPS equipment prices, more and more people have begun to bring a GPS navigation device when they travel.
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GPS navigator
First, the function of the GPS navigation system
The function of GPS navigation, the basic application is nothing more than a simple three-word sentence:
1. Where are you? GPS navigation tells you where you are now.
Where are you? There is no need to say more about this. When riding, car GPS navigation can tell you at any time: What is this place, what villages, rivers, stations, gas stations, restaurants, banks, etc. are there, what road is driving, driving direction, speed and altitude, distance purpose How far is the land, and in what direction is the destination...
2. Where have you been? GPS navigation will record every route you have traveled. The form of the record is an exchangeable file.
Where have you been? This is also the basic function of GPS navigation, that is, recording "track" or "track". A track is a "file" that contains basic data such as "latitude and longitude", "time", and "altitude" for each point in the action.
According to the altitude change map in the track file reserved by GPS, it can be seen that the height change on the riding route: the track file can be reserved or shared with others for navigation or next time when friends go the same route. You can also use GE or other GPS software such as OZI to review the route of walking on the PC, or analyze the indicators of the walking route.
3. Where are you going? GPS navigation tells you how to get there when you arrive at your destination?
Many handhelds such as the GARMIN 60CSx and OREGON 400t have excellent automatic navigation functions, and the latest route maps are used for route planning.
With the continuous improvement of the global positioning system, the continuous improvement of hardware and software, the application field of GPS navigation is constantly expanding. It has spread all over the various sectors of the national economy and has begun to gradually penetrate people's daily lives.
Second, GPS navigation system (gps navigator) features:
1. Global, all-weather work:
Provides users with continuous, real-time 3D position, 3D speed and precision time. Unaffected by the weather
2. High positioning accuracy:
Single machine positioning accuracy is better than 10 meters, using differential positioning, the accuracy can reach centimeter and millimeter
3, many functions, a wide range of applications:
With the deepening of people's understanding of GPS, GPS is not only widely used in measurement, navigation, speed measurement, time measurement, etc., but its application field is expanding.
Third, the application of GPS navigation system
It is mainly for positioning and navigation of moving objects such as ships, cars and airplanes. E.g:
1. Ocean navigation and inbound water diversion;
2. Aircraft route guidance and approach landing;
3. Car autonomous navigation;
4. Ground vehicle tracking and urban intelligent traffic management;
5. Emergency rescue;
6. Personal travel and wilderness adventures;
7. Personal communication terminal (integrated with mobile phone, PDA, electronic map, etc.).
The development potential of China's GPS navigation system market is very huge. In the next few years, China will become the world's largest car GPS market. Due to the mature commercial application environment of navigation satellites, car navigation devices and satellite navigation application standards, car navigation systems will It is more widely accepted by consumers, and the price of GPS navigation products will gradually decline, and the market scale will continue to expand.
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