JIMI Electronic

GPS will play a large role in the future of cellphones. The U.S. government has mandated that calls placed by cellphones to 911 emergency operators must reveal where the call was made, just like landline telephones. This new program works by either triangulating a mobile phone’s position via cellular phone network antenna towers or with a GPS receiver built into the cellphone that transmits its location. In 2003, the first GPS ID Card enabled cellular phones started to appear on the U.S. market. Internet sites and tracking software are available that can provide you with the location of a GPS-enabled phone that’s subscribed to a location reporting service. As GPS phone start to become more common, it’s only a matter of time before navigation and map programs start to appear on the phones, which will bring a whole new meaning to using your phone to get directions. Trying to decide which GPS unit and accessories to get could be overwhelming, especially with the number of choices...

In this highly competitive world, any business can survive and grow only if it’s ready to accept changes and adapt to new technology. Online vehicle tracking is one such innovative service that will add a lot of value to your services. GPS tracking provides numerous benefits that help increase revenue. These include reduced fuel costs, lower insurance premiums, increased productivity, improved dispatching, and back office efficiencies. For the driver, all these benefits add to job security with a financially stable company. Saving money on fuel alone over the course of the year can potentially equal to an entire salary for one employee. Increased revenue can also be forwarded to employees in the form of bonuses. Rewards based on data collected from GPS tracking can boost morale and help gain acceptance of the system. Employees should know that while it may be new to your business, personal tracking device is rapidly becoming the industry standard for any business with a fleet of vehic...

Need directions? Are you good at getting lost? Then GPS is just the technology you’ve dreamed of. If you have a personal tracking device or plan to buy one, this blog helps you compare GPS technologies,units, and uses. You’ll find out how to create and use digital maps and learn about waypoints, tracks, coordinate systems,and other key point to using GPS technology. Get more from your GPS device by learning to use GPS tracking platform and even how to turn your cell phone or PDA into a GPS receiver. You’ll also discover: Up-to-date information on the capabilities of popular handheld and automotive Global Positioning Systems How to read a map and how to get more from the free maps available online The capabilities and limitations of GPS technology, and how satellites and radio systems make GPS work How to interface your waterproof tracking devices with your computer and what digital mapping software can offer Why a cell phone with GPS capability isn’t the same as a GPS unit What can...

The intricacies of GPS ( electronic tracking device ) are steeped in mathematics, physics, and engineering, but you don’t need to be a rocket scientist to understand how GPS works. GPS is composed of three parts: satellites, ground stations, and receivers. Eyeing satellites In GPS jargon, a satellite is the space segment. A constellation of 24 GPS satellites (21 operational and 3 spares) orbits about 12,000 miles above the Earth. The satellites zoom through the heavens at around 7,000 miles per hour. It takes about 12 hours for a satellite to completely orbit the Earth, passing over the exact same spot approximately every 24 hours. The satellites are positioned where a GPS receiver can receive signals from at least six of the satellites at any time, at any location on the Earth (if nothing obstructs the signals). A satellite has three key pieces of hardware: Computer: This onboard computer controls its flight and other functions. Atomic clock: This keeps accurate time wit...

What’s my favorite outdoor activity? Although I enjoy riding my mountain bike to work, what really turns me on is diving into a patch of thick woods and getting completely lost. If it’s an area I’m familiar with, all I need is a water bottle, an energy bar, and a hat in case I’m out after dark. So why would I buy a GPS tracker ? Because they’re small, they’re relatively inexpensive, and they provide the biggest tax-dollar bang-for-the-buck that I can imagine. When I switch on the GPS, I’m plugging into a multibillion-dollar satellite-based navigation system that is coddled in some manner by several of the largest and most powerful U.S. government agencies, including all branches of the military beneath the wings of the Department of Defense and the Department of Transportation. It’s almost irresistible once you realize the enormity of what a simple $150 cell phone–size device can do A GPS unit, coupled with inexpensive topographic-map software, allows you to preview your excursion, ...

Ancient travelers relied on celestial objects, such as stars, to find their way. GPS users also use celestial objects—satellites—to navigate. There are, of course, vast differences between a star and an earth-orbiting man-made object. You observe a star to navigate; a satellite is invisible to the naked eye, but you use its position data, or ephemera, to navigate. Modern navigators no longer have to wait for nightfall and clear skies, and, thanks to atomic clocks, they can receive precise position data continuously. According to the National Academy of Sciences, in 1957 scientists observing the newly launched Sputnik realized they could predict its position by measuring the increase and decrease in frequency of its radio signal as it orbited the earth. This observation confirmed that a satellite’s position in space could be accurately determined from the ground, which meant a satellite could determine the accurate position of an object on or above the ground, such as a hiker or a hang ...

A tracking device can simultaneously receive signals from 4 up to 11 satellites, if the receiver is on the surface of the earth. Under this condition, there are two approaches to solve the problem. The first one is to use all the satellites to calculate the user position. The other approach is to choose only four satellites from the constellation. The usual way is to utilize all the satellites to calculate the user position, because additional measurements are used. In order to focus on this subject only the four-satellite case will be considered. If there are more than four satellite signals that can be received by a GPS receiver, a simple way is to choose only four satellites and utilize them to solve for the user position. Under this condition, the question is how to select the four satellites. Let us use a two-dimensional case to illustrate the situation, because it is 24 BASIC GPS CONCEPT easier to show graphically. In order to solve a position in a two-dimensional case, three sa...

A Global Positioning System (GPS) is a group of 24 earth-orbiting satellites, providing location and time in all weather, anywhere on or near the Earth, where there is an unobstructed line of sight to four or more GPS Satellites. This system of satellite can work in any weather condition, operate 24/7/365 and travel at roughly 7,000 miles an hour. A GPS receiver uses a triangular calculation to pinpoint a user’s exact location buy comparing the time a signal was transmitted with the time it was received by a satellite. The control segment of GPS ( GPS tracking device ) consists of a master control station (MCS), a worldwide network of monitor stations, and ground control stations. The MCS, located near Colorado Springs, Colorado, is the central processing facility of the control segment and is manned at all times. There are five monitor stations, located in Colorado Springs (with the MCS), Hawaii, Kwajalein, Diego Garcia, and Ascension Island. The positions (or coordinates) of these...

A BRIEF HISTORY PRIOR TO atomic clocks, quartz-movement watches kept the most accurate time. Quartz time, based on the vibrations of a quartz crystal, is accurate to about one thousandth of a second perday. But with radio signals traveling at the speed of light, a clock that is off by even a thousandth of a second will produce a gross position error. Atomic clocks, accurate to within 1 second every 100,000 years, derive their precision from the highly predictable gains and losses of energy by atoms. These clocks, accurate to a billionth of a second, are key to the success of GPS. Ancient travelers relied on celestial objects, such as stars, to find their way. GPS users also use celestial objects—satellites—to navigate. There are, of course, vast differences between a star and an earth-orbiting man-made object. You observe a star to navigate; a satellite is invisible to the naked eye, but you use its position data, or ephemera, to navigate. Modern navigators no longer have to wait ...

For fishman or amateurs for fishing, the way to read the bottom of the lake by the map and insure where the fishes are is quite important, you can have a more efficient areas of lake but blind to look for, looking forward to the fish appear automatically. Some fish shops may provide maps to you but these are often lack true accuracy. Here is a quite valuable advice, using a waterproof GPS . This GPS technology make your fishing expeditions much more rewarding, it has more accurate method more than other navigation. One waterproof GPS will tell you where you are and how far where you want to go away from you. Do you know? waterproof GPS is an necessary tool in fishmen's mind at present. Why so many fishmen choose waterproof GPS to go fishing? One waterproof GPS can be quite useful, for example, if you try to find a particular place where you have been told or some places which you have gotten fishing successfully, you can arrive at the spot again by this waterproof GPS. When you ...