【本科毕业设计英文翻译】谈GPS与GPRS的区别与联系On the differ

【本科毕业设计英文翻译】谈GPS与GPRS的区别与联系On the difference between GPS and GPRS and contact

山东科技大学学士学位论文 外文翻译

附录 外文翻译

On the difference between GPS and GPRS and contact

China cooperativedigital GIS

GPS and GPRS just one word, so many people always confuse the two. Especially the friend, just contact GPS will always ask: what is the difference between it and GPRS? So, first contacts and let's clear this exact definition.

GPS

GPS, English, all known as the Global Position System, After a simple translation we get: "GPS" such a result. From the late 50s of the 20th century, Americans took 30 years, spent more than 300 billion U.S. dollars, the construction of such a brilliant large system,

can be said that the history of glorious space.

Pictured: GPS navigation satellite

The inspiration of global positioning system (GPS) was born in meridian meter satellite navigation system, and meridian instrument can display satellite navigation system, positioning accuracy and fixed locating time not prompted the shortcomings of the birth of GPS.

This system is composed of 24 satellite, with 11 hours into the cycle of uninterrupted 58 turning around the earth, we provide images and data. Although the altitude, 12,000 kilometers away but can insight to every corner of the earth. Therefore, the first set of equipment is only used for important national interests of the military and the civilian involved in the field of view of the tremendous value it was really used as a Civil, and completely free. Nowadays, GPS products is endless, GPS mobile phone, car GPS, GPS module ... ... Hence, the latitude and longitude of the concept of more and more, so we

【本科毕业设计英文翻译】谈GPS与GPRS的区别与联系On the difference between GPS and GPRS and contact

mentioned above the earth in the more easily also.

GPRS

Gerneral Packer Radio Service GPRS is the acronym for General Packet Radio Service the Chinese translation. Current domestic GPRS operator is China mobile communications, in fact, we often send MMS when it is used, simply, it is a kind of unlimited data transfer tool.

Specifically, GPRS in the existing GSM system, developed a new packet data bearer services. GPRS and GSM system, the most fundamental difference is that, GSM is a kind of circuit switching system, and GPRS is a packet switching system. GPRS especially suitable for intermittent, sudden or frequent, small amounts of data transfer, but also to the

occasional large data transfers. We can understand the GSM will GPRS is a higher level.

Pictured: GPRS Simple Applications

GPRS charging methods and traditional GSM was also quite different, it is only by the data flow billing, namely according to user's data transmission to billing, For example, we download information, not by Internet time, as long as you don't charged for data transmission, even if has been "online", also need not pay. A "call", for example, in the use of GSM + WAP phones, like the telephone connected started charging, use GPRE + WAP Internet will have to a much more reasonable, like phone is not connected to charges Only dialogue when calculating the cost.

Understand both the specific meaning, you will understand, GPS and GPRS is "appearance" similar only. However, the two looks similar to the guy, it touches on some

【本科毕业设计英文翻译】谈GPS与GPRS的区别与联系On the difference between GPS and GPRS and contact

really contact, so we shall not bring out a concept - AGPS.

AGPS

AGPS namely Assisted GPS, auxiliary global positioning system. It is combined with the traditional GSM/GPRS, using GPS satellite base stations and send information to shrink, auxiliary GPS satellite signal chip for delay time, the interior also can cover up by base stations and reduce dependence on GPS satellite chip dependence, etc. Therefore, AGPS can provide broader, more power, faster location-based services, the ideal range of error of

10 meters.

Pictured: AGPS chip

And even said, can realize the GPS positioning, GPRS networks through optimization of make it more. But to achieve AGPS technology in addition to an increase in the phone GPS receiver modules, also need to transform mobile antenna, the construction of the mobile network location server, the differential GPS base station and so on. If you want to improve GPS signal shielding effectiveness, so the location area of technology will need to add more. Therefore, we do not provide this service is understandable, but when we can use this technology in China is unknown.

Finally, three sentences sum up:

1.GPS means "Global Positioning System", is a kind of positioning technology, used to identify the latitude and longitude location of the object, at least ten years there will be no more advanced than the GPS positioning technology.

2.GPRS means "General Packet Radio data service", just a kind of data transmission, used to transfer data group, like to send SMS messages, does not have any position or burglar robbed function.

【本科毕业设计英文翻译】谈GPS与GPRS的区别与联系On the difference between GPS and GPRS and contact

3.GPRS may say is in a GPS part, is the GPS technology applies to one kind of transmission data function.

【本科毕业设计英文翻译】谈GPS与GPRS的区别与联系On the difference between GPS and GPRS and contact

山东科技大学学士学位论文 外文翻译

谈GPS与GPRS的区别与联系

中国GIS咨询网

GPS与GPRS仅仅一字之差，使得很多人总是将两者搞混。尤其是刚刚接触GPS的朋友，总是会问：它和GPRS有什么区别和联系呢那么，首先先让我们明确这两者的确切定义。