JIMI Electronic

Changing Receiver Settings After you initialize your GPS receiver for the first time, you need to change a few of the receiver’s default system settings. You only need to do this once, and a few Small GPS Tracker will prompt you to make some of these changes as part of the initialization process. These changes are mostly to customize settings based on your location and needs. Check your user manual for specific information on how to change the system settings described below. Although GPS receivers have a number of system settings that you can change, here are some of the important settings you’ll want to initially adjust: Time: Your GPS receiver gets very precise time data from atomic clocks aboard the satellites, but it’s up to you how the time will be displayed. You need to specify • Whether to use 24-hour (military time) or 12-hour (AM and PM) time • Whether Daylight Savings Time is automatically turned on and off • What your time zone is (or your offset from...

Changing Receiver Settings After you initialize your GPS receiver for the first time, you need to change a few of the receiver’s default system settings. You only need to do this once, and a few Small GPS Tracker will prompt you to make some of these changes as part of the initialization process. These changes are mostly to customize settings based on your location and needs. Check your user manual for specific information on how to change the system settings described below. Although GPS receivers have a number of system settings that you can change, here are some of the important settings you’ll want to initially adjust: Time: Your GPS receiver gets very precise time data from atomic clocks aboard the satellites, but it’s up to you how the time will be displayed. You need to specify • Whether to use 24-hour (military time) or 12-hour (AM and PM) time • Whether Daylight Savings Time is automatically turned on and off • What your time zone is (or your offset fro...

Because the scope of GPS research and application development is so broad and conducted by researchers all over the globe, it is impossible to give a comprehensive listing. Therefore, merely demonstrates the extraordinarily rapid development of the  GPS Solution  . GPS made its debut in surveying and geodesy with a big bang. During the summer of 1982, the testing of the Macrometer receiver, developed by C. C. Counselman at M.I.T., verified a GPS surveying accuracy of 1–2 parts per million (ppm) of the station separation. Baselines were measured repeatedly using several hours of observations to study this new surveying technique and to gain initial experience with GPS. During 1983 a thirty (plus)-station first-order network densification in the Eifel region of Germany was observed (Bock et al., 1985). This project was a joint effort by the State Surveying Office of North Rhein-Westfalia, a private U.S. firm, and scientists from M.I.T. In early 1984, the geodetic network densif...

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...

Over the past several years, GPS tracking  have become extremely popular and affordable. Lots of people who venture away from urban areas are carrying them. Cars come installed with GPS navigation systems for negotiating city streets and highways. Cell phones are even starting to show up with tiny GPS tracking  embedded inside. And even if you don’t have a GPS tracking  you can always go out on the Web and print a map of where you want to go. But, there are a few hitches in this perfect, always found world: GPS tracking  tend to boast so many features it’s easy to get lost trying to figure them all out. Plus, most GPS tracking  owners typically only use ma small subset of the available features (and sometimes don’t even know how to use these features well enough to avoid getting lost). GPS tracking  have capabilities and limitations that many owners (or potential owners) really don’t understand. This leads to frustration or not being able to use the de...

We are now ready to exploit all this knowledge to study the design of A-GPS receivers that have much greater sensitivity than standard  GPS Tracking Device  . If you are designing a high-sensitivity receiver, then it is essential to understand the relationship of these signals to each other and the effects of each of the receiver components on the signal. Once you understand the processing gain of each part of the receiver, then it is a small step to understand how to increase that gain and thus increase the sensitivity of the receiver. However, even if you are not designing a receiver, it is still important to understand the relationship of the signal strength at the antenna to the correlation response. This is because the measure of a high sensitivity receiver is its ability to acquire and track weak signals. The only way of knowing how weak the signals actually are, in practice, is for the receiver to tell you, and the way the receiver knows is by back-calculating the sign...