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Author: KALP SYSTEM (530)50
Modified on 17/01/2009

Much talk in the day to day GPS navigators. We took in the car or pocket, some even on a clock and not even know it. But what these acronyms mean? Where do they come? I will try to tell you the clearest possible way the origin, meaning, operation and types of GPS navigators that we find today. WHAT IS THE GPS The Global Position System (GPS) or Global Positioning System (its correct name is NAVSTAR-GPS1) is a Global Navigation Satellite System that enables us in the place we’re in the world (is worldwide, unlike the Russian system GLONASS) to determine our position or that of an object to within a few meters, but could be improved. This technology has its origin and development in the military. Specifically, is currently responsible for the Department of Defense of the USA. In the next version, GPS III, will be a branch that is not dependent on the military field. HOW IT WORKS Although one might think the GPS device is placed in the car, the reality is that this element is only one part, namely one third of the entire system. What we have between the hands is only the receiver. For this element we need to be of some satellites, 27 in total, which orbit the Earth. These teams have a lifespan of about 8 years, after which generally are replaced with more modern ones. Power is receiving solar cells. The satellites circle the Earth and their orbits are calculated so that at any time and from anywhere on Earth have at least six satellites are visible by our receiver. That everything happens as planned in charge of monitoring stations that synchronize the atomic clocks of the satellites and alter the trajectory and orbit. These data will be crucial if our receiver then know where we stand. Receivers to calculate their position, they need the following information: ? The exact location in space of at least three satellites. ? The exact distance between himself and each of those satellites. ? The exact time at which the satellite transmitted the information received. Briefly, because the entire process is complex and does not interest us, each of the satellites constantly transmit their exact position, its unique identifier, information from the satellite’s orbit, and very importantly, the exact time of which was sent transmission. With these data, the receiver can calculate the time it took to travel information and using triangulation to calculate its 3D position. With more satellites is achieved slightly higher accuracy. Basic is that the clocks of all the parts are very precise and are perfectly synchronized. The ideal is to have an atomic clock at the receiver, but its price is infeasible, so you place a normal quartz clock adjusts its time with the satellites. Moreover, theirs will be adjusted also by ground stations. As for timing, it is considered that the signal travels at the speed of light and necessary adjustments are made by small variations due to the atmosphere. ACCURACY OF GPS The accuracy of GPS systems can vary depending on many factors: weather, number of visible satellites, natural or artificial barriers? In general, captured more than 7 satellites, GPS accuracy is about 2.5 meters for 95% of the time, albeit with DGPS (Differential GPS) is available within 1 meter. Until 2001, this had to be added to the random error introduced due to U.S. military technology. However, since then there is no such fact was called Selective Availability. As for the DGPS correction is applied in the receiver with data from ground stations, they always have well defined coordinates. When receiving data from satellites, the station calculates its exact position to increase accuracy, as we have said may even be + / – 1 meter. Browser types Currently, a consumer may find the following basic types of browsers: ? Handheld GPS. ? Mobile phone with integrated GPS or agenda. ? GPS integrated into vehicles. ? GPS receivers for use with other equipment such as phones. For the ultimate in personal pleasure that I recommend Garmin for my use and knowledge is one of the best and affordable for the market.

Author: KANATAONLINE
Modified on 16/11/2007

The Global Position System (GPS) or Global Positioning System (better known by the acronym GPS although its correct name is NAVSTAR-GPS1) is a Global Navigation Satellite System (GNSS) which allows to determine everyone’s position an object, a person, vehicle or shed, with an accuracy up to centimeters using differential GPS; usually a few meters. Although his invention is attributed to French and Belgian governments, the system was developed and installed, and is currently operated by the Department of Defense of the United States. GPS works through a network of 27 satellites (24 operational and 3 back) in orbit over the globe at 20,200 km with trajectories synchronized to cover the entire surface of the Earth. When you want to determine the position, the device used to it automatically locates at least four satellites in the network, which receives signals indicating the position and watch each of them. Based on these signals, the device synchronizes the GPS clock and calculates the delay of the signals, ie the distance to the satellite. By “triangulating” calculates the position in which it is located. The triangulation in the case of GPS, unlike the 2-D case is to ascertain the angle with respect to known points, is based on determining the distance of each satellite relative to the measuring point. Knowing the distance, is easily determined one’s position relative to the three satellites. Knowing well the coordinates or position of each of them emitting the signal, we obtain the absolute position or actual coordinates of the measuring point. Also extreme accuracy is achieved in the GPS clock, similar to that of atomic clocks carried on board each satellite. The former Soviet Union had a similar system called GLONASS, now managed by the Russian Federation. Currently the European Union tries to launch its own satellite positioning system, called ‘Galileo’.
ome mobile phones can be linked to a GPS receiver designed for that purpose. They tend to be independent modules that communicate with the phone wirelessly via Bluetooth and to provide the positioning data, which are interpreted by a browser program. This application of GPS is particularly widespread in mobile phones operating on the Symbian operating system and PDA with Windows Mobile but Nokia released the N95 with integrated GPS module

GPS, a useful tool and the new regulation Mandatory Transit

Author: MEGASTOREMX
Modified on 06/02/2009

What is GPS?

The letters are in English and mean Global Position System, Which means translated into Castilian Global Positioning System.

What gives this technology?

The GPS is a system for determining the position of a person or object, located anywhere on the planet. The operation is, first, through the use of a network of 30 satellites orbiting the Earth at about 20,000 km away, and is known for? Navstar?.

On the other, a receptor found on devices incorporating this technology. In this way and through our GPS we can see on the screen a map of the city where we are, and notice a point on it, indicating exactly where we stand, or rather, where is your mobile phone, which is that incorporates the receiver. The system accuracy is very high, the error in the location is minimal.

___________

In the new Traffic Regulation states:

Article 16 .- Drivers should make sure that your vehicle is equipped with:

I. Enough fuel to function properly;
II. Headlights, which emit white light, equipped with a mechanism for change of intensity;
III. Lights:
a) intermittent flashing emergency stop;
b) Special, depending on the size and vehicle service;
c) To indicate the reverse;
d) Indicators of brakes in the rear;
e) Directional Flash intermittent front and rear, and
f) To illuminate the back plate;
IV. Forequarters, light yellow and rump red light;
V. Tires under conditions that ensure security;
VI. Spare tire, and the right tool for changing it;
VII. At least two mirrors, interior and driver’s side;
VIII. Both defenses;
IX. Seat belts;
X. Windshield in good condition to enable visibility inside and outside the vehicle;
XI. Geolocation device or Georeferencing Satellite Radio or similar technology.

That is, the prohibition of displays of this type of question does not apply where GPS’s because they are required to implement the same rules … later clarified between TRANSIENT:

THIRD .- The provisions of paragraph XI of article 16 concerning the device or Georeferencing Geolocation Satellite Radio or similar technology, will be mandatory for 2008 models onwards.

GPS, a useful tool and the new regulation Mandatory Transit

Author: MEGASTOREMX
Modified on 06/02/2009

What is GPS?

The letters are in English and mean Global Position System, Which means translated into Castilian Global Positioning System.

What gives this technology?

The GPS is a system for determining the position of a person or object, located anywhere on the planet. The operation is, first, through the use of a network of 30 satellites orbiting the Earth at about 20,000 km away, and is known for? Navstar?.

On the other, a receptor found on devices incorporating this technology. In this way and through our GPS we can see on the screen a map of the city where we are, and notice a point on it, indicating exactly where we stand, or rather, where is your mobile phone, which is that incorporates the receiver. The system accuracy is very high, the error in the location is minimal.

___________

In the new Traffic Regulation states:

Article 16 .- Drivers should make sure that your vehicle is equipped with:

I. Enough fuel to function properly;
II. Headlights, which emit white light, equipped with a mechanism for change of intensity;
III. Lights:
a) intermittent flashing emergency stop;
b) Special, depending on the size and vehicle service;
c) To indicate the reverse;
d) Indicators of brakes in the rear;
e) Directional Flash intermittent front and rear, and
f) To illuminate the back plate;
IV. Forequarters, light yellow and rump red light;
V. Tires under conditions that ensure security;
VI. Spare tire, and the right tool for changing it;
VII. At least two mirrors, interior and driver’s side;
VIII. Both defenses;
IX. Seat belts;
X. Windshield in good condition to enable visibility inside and outside the vehicle;
XI. Geolocation device or Georeferencing Satellite Radio or similar technology.

That is, the prohibition of displays of this type of question does not apply where GPS’s because they are required to implement the same rules … later clarified between TRANSIENT:

THIRD .- The provisions of paragraph XI of article 16 concerning the device or Georeferencing Geolocation Satellite Radio or similar technology, will be mandatory for 2008 models onwards.