Aug 3, Maptor Handheld Map Projector. The GPS function that’s included is no joke though, and it’ll pin-point your location on any map which. A GPS navigation device, GPS receiver, or simply GPS is a device that is capable of receiving information from GPS satellites and then to calculate the device’s. Aug 27, Maptor is a compact and stylish concept device that will resolve these Moreover, this device includes a GPS that will indicate your exact.
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Using suitable software, the device may display the position on a map, and it may offer directions. The GPS was originally developed for use by the United States military, but in the s, the United States government allowed the system to be used for civilian purposes. Though the GPS satellite data is free and works anywhere in the world, the GPS device and the associated software must be bought or rented. A GPS reception requires an unobstructed line of sight to four or more GPS satellites,  and is subject to poor satellite signal conditions.
In exceptionally poor signal conditions, for example in urban areas, satellite signals may exhibit multipath propagation where signals bounce off structures, or are weakened by meteorological conditions.
Obstructed lines of sight may arise from a tree canopy or inside a structure, such as in a building, garage or tunnel. Today, most standalone GPS receivers are used in automobiles. However, the mobile network part of the A-GPS technology would not be available when the smartphone is outside the range of the mobile reception network, while the GPS aspect would otherwise continue to be available. Using the GPS information and subject to the sophistication of installed GPS software, a GPS device used as an automobile navigation system may be used in a number of contexts, including:.
As with many other technological breakthroughs of the latter 20th century, the modern GPS system can reasonably be argued to be a direct outcome of the Cold War of the latter 20th century. The multibillion-dollar expense of the program was initially justified by military interest. Inthe US Navy put into service its Transit satellite based navigation system to aid in ship navigation. Between andas the benefits were been shown, the US military consistently improved and refined its satellite navigation technology and satellite system.
Inthe US military began to plan for a comprehensive worldwide navigational system which eventually became known as the GPS global positioning system.
Inin the wake of the tragedy of the downing of the Korean Airlines Flightan aircraft which was shot down while in Soviet airspace due to a navigational error, President Reagan made the navigation capabilities of the existing military GPS system available for dual civilian use. However, civilian use was initially only a slightly degraded ” Selective Availability ” positioning signal.
This new availability of the US military GPS system for civilian use required a certain technical collaboration with the private sector for some time, before it could become a commercial reality. InMagellan Navigation Inc. Inthe Clinton administration removed the military use signal restrictions, thus providing full commercial access to the US GPS satellite system.
Mitsubishi Multi Communication System. As GPS navigation systems became more and more widespread and popular, the pricing of such systems began to fall, and their widespread availability steadily increased.
Also, several additional manufacturers of these systems, such as GarminBenefonMio and TomTom entered the market. Later, as smartphone technology developed, a GPS chip eventually became standard equipment for most smartphones.
To date, ever more popular GPS navigation systems and devices continue to proliferate with newly developed software and hardware applications. It has been incorporated, for example, into cameras. While the American GPS was the first satellite navigation system to be deployed on a fully global scale, and to be made available for commercial use, this is not the only system of its type.
Due to military and other concerns, similar global or regional systems have been, or will soon be deployed by Russia, the European Union, China, India, and Japan.
GPS devices vary in sensitivity, speed, vulnerability to multipath propagationand other performance parameters. High Sensitivity GPS receivers use large banks of correlators [ clarification needed ] [ citation needed ] and digital signal processing to search for GPS signals very quickly. This results in very fast times to first fix when the signals are at their normal levels, for example outdoors. When GPS signals are weak, for example indoors, the extra processing power can be used to integrate weak signals to the point where they can be used to provide a position or timing solution.
This is well below the thermal noise level in its bandwidth. High Sensitivity GPS can provide positioning in many but not all indoor locations. Signals are either heavily attenuated by the building materials or reflected as in multipath. Dedicated devices have various degrees of mobility. Hand-heldoutdooror sport receivers have replaceable batteries that can run them for several hours, making them suitable for hikingbicycle touring and other activities far from an electric power source.
Their screens are small, and some do not show color, in part to save power. Some use transflective liquid-crystal displaysallowing use in bright sunlight. Cases are rugged and some are water resistant.
Other receivers, often called mobile are intended primarily for use in a car, but have a small rechargeable internal battery that can power them for an hour or two away from the car.
Gpps purpose devices for use in a car may be permanently installed and depend entirely vps the automotive electrical system. The pre-installed embedded software of early receivers did not display maps; 21st century ones commonly show interactive street maps of certain regions that may also show points of interestroute information and step-by-step routing directions, gpps in spoken form with a feature called ” text to speech “. Due in part to regulations encouraging mobile phone trackingincluding Ethe majority of GPS receivers are built into mobile telephoneswith varying degrees of coverage and user accessibility.
Commercial navigation software is available for most 21st-century smartphones as well  as some Java -enabled phones that allows them to use an internal or external GPS receiver in the latter case, connecting via serial or Bluetooth.
Still others have a hybrid positioning system that can use other signals when GPS signals are inadequate. More bespoke solutions also exist for smartphones with inbuilt GPS capabilities. The system uses gpsOne technology to determine the location, and then uses the mobile maptkr data connection to download maps and calculate navigational routes.
Other products including iPhone are used to provide similar services. Maps can be preloaded onto the device. GPS navigation applications for mobile phones include on-line e. Google Maptkr Navigationwhich is included with Androidmeans most smartphone users only need their phone to have a personal navigation assistant. The phone downloads a file to help it locate Gsp satellites more quickly and reduce the time to first fix.
Software companies have made gp GPS navigation software programs for in-vehicle use on laptop computers. Other GPS devices need to be connected to a computer in order to work. This computer can be a home computerlaptopPDAdigital cameraor smartphones.
Devices usually do not come with pre-installed GPS navigation softwarethus, once purchased, the user must install or write their own software.
GPS navigation device
As the user can choose which software to use, it can be better matched to their personal taste. The software may include maps only for maltor particular region, or the entire world, if software such as Google Maps are used. Some hobbyists have also made some GPS devices and open-sourced the plans. Examples include the Elektor GPS units.
GPS Navigator Maptor
Other chips and software implementations are also available. Commercial aviation applications include GPS devices that calculate location and feed that information to large multi-input navigational computers for autopilotcourse information and correction displays to the pilots, and course tracking and recording devices.
Military applications include devices similar to consumer sport products for foot soldiers commanders and regular soldierssmall vehicles and ships, and devices similar to commercial aviation applications for aircraft and missiles. Consumer devices were restricted by selective availability SAwhich was scheduled to be phased out but was removed abruptly by President Clinton.
DGPS can be within a few centimeters. A gpa GPS receiver tracks the necessary satellites by typically using one or two hardware channels. The set will track one satellite at a time, time tag the measurements and combine them when all four satellite pseudoranges have been measured.
These receivers are among the least expensive available, but they cannot operate under high dynamics and have the slowest time-to-first-fix TTFF performance. GPS maps and directions are occasionally imprecise. In August a young mother and her six-year-old son became maptoor in Death Valley after following GPS directions that led her up an unpaved dead end road.
When they were found five days later, her son had died from the effects of heat and dehydration.
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Other hazards involve an alley being listed as a street, a lane being identified as a road,  or rail tracks as a road. Obsolete maps sometimes cause the unit to lead a user on an indirect, time-wasting mapror, because roads may change over time. Smartphone GPS information is usually updated automatically, and free of additional charge. Manufacturers of separate GPS devices also offer map update services for their mptor, usually for a fee.
Due to the popularity of GPS devices, privacy of the user becomes a subject of debate. This is because they can give geo-location information of the user. Some commentators think this is private information, and not to be violated without legal approval. However, there were several incidents where the privacy of GPS devices ,aptor questioned.
Since GPS devices can give the user’s exact location, this helps with location-based advertising. The advertising agency also will store the user’s location for future use. If it is sensitive data, the can not store it since this amounts to a privacy violation.
Privacy concerns also arise when employers use GPS tracking units to track their employees’ matpor, for example using vehicle tracking systems. Concern heightens if the employers collect geo-location data of their employee when not at work. GPS devices are also used by private investigators to give more information to their clients. They will plant their own GPS devices to learn about their target.
Moreover, some rental car services use the same technique to prevent their customers from going out of their targeted area. They charge additional fees for those who violate their rules. They get this information from the car’s GPS devices. From Wikipedia, the free encyclopedia. For navigation provided by a GPS, see Turn-by-turn navigation. Comparison of GPS software. This section does not cite any sources.
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