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GPS tracking device are available as handheld portables

Январь 7th, 2016 by homesecuirtycameras and tagged , , ,

GPS tracker mini are available as handheld portables, as stand- alone bracket mounted or in - dash models, and as “ black boxes ” combined with sonar devices. Sportfi shing boaters use GPS to get to and from selected locations and to determine the exact location of important fi shing grounds. The additional value to anglers is in pinpointing places to fish, schools of fish, or significant underwater structures, and being able to return to them unerringly. In some instances there is great value to pinpointing the specifi c part of an area to fish such as the riprap near a submerged wreck. The locations saved in GPS receivers are called waypoints. Once a waypoint has been saved, an angler can return to it at any time. Saving is most commonly done by pressing a button while the unit is located at the waypoint ’ s position; the position can also be saved by entering its latitude and longitude coordinates through the keypad.

These coordinates are important because with the lat/lon coordinates you can fi nd a place that you have never been to; the coordinates can be given to you, or you can take them off a good navigational chart. It’s a good idea to record waypoint information in a logbook as a backup, in case the unit is lost, stolen, or breaks down. You can reenter the waypoints manually after fixing or replacing your unit or acquiring another. Integrating with a personal computer will allow you to store appropriate information as well as plan trips.

No detailed study of vehicle GPS locator is complete without a study of the most commonly used protocol for communication between the GPS and other devices. Even if you have no intentions of writing applications that process or work with GPS data, and instead plan on using only readymade applications. Therefore, anglers who troll use various other instruments, referred to as speed gauges, speed sensors, or speed indicators, to accomplish this. These include electronic instruments fi tted with a paddlewheel, which is secured to the boat transom flush to the hull; GPS navigational devices; and non - electronic drag - weight gauges, which measure speed relative to markings on a plate. Additionally, there are devices, attached to downrigger weights, that measure via paddlewheel the speed of the lure at the depth of a downrigger weight. This is sometimes different than surface speed. The most accurate speed gauge is a GPS unit, which measures distance traveled over time. If you ’ ve used an automobile navigator you know how reliable this system is at determining speed. Most larger sportfishing boats are equipped with some type of vehicle GPS tracking systems, often in combination with a sonar device, and when trolling, the speed is always known and displayed.

Dustproof and Waterproof Car tracking GPS is a powerful and easy-to-use GPS tracker specially designed for motorcycle, electromobile and common vehicles. Operating voltage is from 7.5-90 VDC, which would be suitable for every vehicle on the road.  With GSM+GPRS+GPS technology, the device can easily achieve fast and accurate positioning. IP65 standard protects the device from rain and dust. Vibration detect, SOS button, geo-fence alarm and remote cut off power protects the vehicle in 360 degree.

Remote control ( Remote cut Off power/electricity )

Send SMS to the device to cut off the vehicle engine and circuit when someone startup the vehicle illegally in remotely.

Low voltage protection for battery

When your vehicle is laid-up, it will be in low battery to protect your vehicle.

Dustproof and Waterproof

It is waterproof and dustproof so that it can be protected well for a long time.

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How GPS tracker work - Time is of the Essence

Декабрь 25th, 2015 by homesecuirtycameras and tagged , ,

With progressive development in technology in recent years, one can relish the prime advantages of the various innovative software solutions such as field service tracking software. A lot of operational costs can be reduced using this software to improve the ROI. From various records, it is also proven that many industries have saved up to 30% using the field service tracking system. The best thing about using this software is that, it can be accessed from computers, smart phones or tablets. In addition to these types of GPS receivers, larger and less portable models are used in airplanes, boats, and commercial vehicles. The U.S. government and military uses restricted-use GPS units, and expensive receivers are used for surveying. Although some of these vehicle GPS tracking devices are discussed briefly, don’t expect to find out as much about them as the land and auto consumer models. I tell you what questions to ask when selecting a GPS receiver and give you some hints on which features are best for different activities. You can apply these questions and selection criteria to pretty much any GPS 3G tracker for Car to pick the right model for you.

In a conventional Personal GPS tracker the information, such as carrier frequency and initial C/A code phase obtained from the acquisition, can be used to track a signal. The navigation data phase transition can be found through the tracking program. For a weak signal it is difficult to determine the exact location of the navigation data transition from the tracking program. In order to process the data efficiently, the exact location of the navigation data phase transition is needed such that one can start to process the data every 20 ms. Thus in this section the determination of the location of the navigation phase transition is discussed. In general, it is easier to determine whether there is an existence of data transition than to determine the exact location of a data transition.

Even though the vehicle GPS tracking device knows the precise location of the satellites in space, it still needs to know how far away the satellites are (the distance)so it can determine its position on Earth. There is a simple formula that tells the receiver how far the satellites are (the distance)so it can determine its position on Earth.  There is a simple formula that tells the receiver how far it is from each satellite:Your distance from a given satellite object equals the velocity of the transmitted signal multiplied by the time it takes the signal to reach you (Velocity x Travel Time = Distance).

The satellites orbit at an altitude of approximately 20,200 kilometers, or about half the altitude of a geostationary satellite. A geostationary satellite, orbiting at about 40,000 kilometers altitude, circles the Earth every 24 hours, the same time period that the Earth takes to complete one full rotation (one day). Therefore, a geostationary satellite always remains over the same spot on the Earth (thus “geostationary”), essentially following that “spot” on the surface as the Earth rotates. The GPS satellites, at one-half that altitude, complete one orbit every 11 hours, 58 minutes (its “orbital period”). Since the Earth is rotating underneath the orbiting satellites, any given satellite’s orbit slowly “moves” slightly westward with each rotation.

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