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Showing posts with the label portable GPS tracker

interfacing a portable-gps to a computer

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Your Personal GPS Tracker is pretty darned useful even if you can’t connect it to your computer. With your receiver, you can find your way around as well as your way back, even if you don’t know what a computer is. The ability to connect your GPS receiver to your computer, however, can make your GPS receiver even more useful . . . heck, a lot more useful. Essentially, a connection between your GPS receiver and your computer allows them to talk and share information, such as uploaded maps and waypoints to your receiver as well as downloaded receiver information that you store while on your adventures. In this Blog, I show you why this interconnectivity is a fantastic addition to your receiver. You’ll discover the ins and outs of the physical connections, how to get your computer and receiver to speak the same language, the lowdown on great receiver utility programs, and how to upgrade your receiver firmware. About (Inter)Face: Connectivity Rules If you choose to use a mapping ...

How to initialize Your GPS Tracking Device

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Your  GPS Tracking Device  now has power, so it’s ready to go, right? Well, almost. After you put batteries in your GPS receiver and turn it on for the first time, don’t expect it to instantly display your location. A GPS receiver first needs to go through an initialization process before it can tell you where you are. The type of initialization and the amount of time it takes depends on what information the GPS receiver has previously received from the satellites and when. The process is mostly all automatic, and you don’t need to do much as your GPS receiver starts up and begins to acquire satellites. Your GPS user manual may contain model-specific initialization information. To initialize a new GPS receiver, take it outside to someplace that has an unobstructed view of the sky (such as a large field or a park) and turn on the power. (You did install the batteries first, right?). After the start-up screen displays, the receiver will begin trying to acquire satellites. I...

GPS tracking solutions - About GPS Surveying Techniques

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If a static tracking device control survey is carefully planned, it usually progresses smoothly. The technology has virtually conquered two stumbling blocks that have defeated the plans of conventional surveyors for generations. Inclement weather does not disrupt GPS observations, and a lack of intervisibility between stations is of no concern whatsoever, at least in postprocessed GPS. Still, electronic tracking devices is far from so independent of conditions in the sky and on the ground that the process of designing a survey can now be reduced to points-per-day formulas, as some would like. Even with falling costs, the initial investment in GPS remains large by most surveyors’ standards. However, there is seldom anything more expensive in a GPS project than a surprise. New Design Criteria These upgrades in accuracy standards not only accommodate control by static GPS; they also have cast survey design into a new light for many surveyors. Nevertheless, it is not correct to say th...

GPS devices that include 3G communication chips

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With the current technology, tracking and tracing usually requires an additional GPS antenna to determine the precise location, as the position information from the GSM network is too fuzzy to provide accurate location data. Also communication with mobile units is often established by Short Message Service (SMS), with a fixed fee associated with every query. There is no permanent flow of data communications (SMS is not an “always on” service) between the field staff and the base—and every query incurs relevant cost. With the evolvement of 3G networks, there is an expectation of change in the infrastructure or rather; there have already been some changes. 3G will allegedly provide “always on” data communication at high speed, which will enable easy and quick queries at any time, even continuous tracking and tracing. It is also assumed that this service will be at a comparatively lower rate. The major enhancements to be expected from GPS 3G mobile services are directly linked to new k...

Personal vehicle tracking devices and Map Databases

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One major challenge with map matching before electronic tracker was available was the initialization of the system when the starting position was not known. In early navigation systems, the user sometimes had to be prompted to enter the current position. Of course this was difficult if the user did not know where they were! With GPS, the absolute position is readily determined, and, in time, GPS receivers were added to navigation systems. Initially, GPS was only used to get the DR/map matching system started or to detect large errors. Then systems emerged where the GPS/DR trace was compared with the digital road map in order to find the most probable location of the vehicle. Today, most navigation systems rely primarily on GPS and use DR and map matching to correct GPS errors and bridge the coverage gaps. A robust map matching implementation uses confidence measures to determine all possible road segments in the map on which the vehicle could be traveling. In order to support map ma...

The importance of precision for GPS tracker

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The GPS is a constellation of twenty-four satellites (plus spares) that orbit the earth every twelve hours at an altitude of 14,000 miles from the earth's center. The system is owned and operated by the DOD, specifically the Air Force. Each satellite carries four highly accurate atomic clocks that "tick" to an accuracy of 1 nanosecond (one-billionth of a second); future satellites are expected to be accurate to between .01 and .1 nanosecond. The satellites broadcast their precisely timed radio signals through the atmosphere and onto the earth's surface at the speed oflight. The signals from each satellite arrive at any particular point on or above the earth's surface at slightly different times. GPS receivers passively calculate where they are and what time it is by comparing the signals of multiple satellites in the constellation. Receivers require an unobstructed view of the sky, so they can be used only outdoors, and they often do not perform well in forested a...

3G GPS tracker main features

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3G is now emerging in the machine-to-machine (M2M) markets as a solution for high data usage in location-based services for business application. 3G networks allow for faster data stream for messaging terminals and provide a wider coverage area. Unlike Bluetooth trackers, our New 3G solution can locate your pet anywhere it may go. The device is also small enough that you can attach it your existing dog collar. 3G GPS tracker gives you the location of anything, at anytime. Utilizing cutting-edge GPS technology, JiMi 3G GPS tracker can help you track anything, be it your car, children, or a prized possession, all in real time. The tracker’s manageable size allows you to install it easily, while being tough enough to withstand the bumps and movement of vehicle tracking. This tutorial has been specially designed to guide you through the functions and features of your 3G GPS vehicle tracker. With carriers planning to sunset the support of the 2G network, Jimi is giving customers the opti...

About High Accuracy Personal Portable GPS Tracker

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GPS - the Global Positioning System - is a navigation revolution. It’s a technology that pinpoints a user’s location anywhere in the world, 24 hours a day, regardless of the weather. Designed by the United States’ Department of Defense for use by the military, the GPS System was made available to civilians for use in aviation, marine surveying and general outdoor/recreation markets. Today, millions of people utilize the accuracy and convenience of this amazing technology to hunt, fish, hike, fly, cruise and sail. GPS consists of a constellation of 24 satellites orbiting some 12,000 miles above the earth. These satellites transmit signals containing time and orbital data to calculate satellite position and almanac data. Meanwhile, receivers used on the ground, sea and air search the sky for the satellites. The GPS unit needs to acquire good signals from at least three satellites to determine a position on the surface of the earth. A fourth signal is required to get three-dimensional pos...

GPS kid tracker - Valuable Commodity for Parents

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One day I saw the local new that a 3 years old children was kidnapped in a shopping mall. Police also did not know where he was and they even has any clue about who carried him away. For parents, it is the most terrible nightmare, parents can't be all paid close attention to their children, they have the rights they work alone, and the child only takes a few seconds to disappear. Nowadays there are some measures to take to insure this accident will not happen on your childs, that is GPS kid tracker . it is new on the market and offer a nice and safe function. Often these are put into cell phones that the child can carry with him or her. Jimilab offers a GPS kid tracker on their phones that parents can pay for. It lets parents know where the child's phone is at all times even if it is turned off. Parents are likely to be in doubt that at what age should you buy your kid phone, unfortunately, there is no right number, GPS kid tracker is largely a function of family need,...