測繪專業(yè)外文翻譯--談gps與gprs的區(qū)別與聯(lián)系

1、<p><b>　　附錄 外文翻譯</b></p><p>　　On the difference between GPS and GPRS and contact</p><p>　　China cooperativedigital GIS</p><p>　　GPS and GPRS just one word, so many

2、 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.</p><p><b

3、>　　GPS</b></p><p>　　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

4、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.</p><p>　　Pictured: GPS navigation satellite</p><

5、p>　　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 t

6、ime not prompted the shortcomings of the birth of GPS.</p><p>　　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.

7、 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 i

8、n the field of view of the tremendous value it was really used as a Civil, and completely free. Nowadays, GPS products is endless, GPS mo</p><p><b>　　GPRS</b></p><p>　　Gerneral Packe

9、r 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 kin

10、d of unlimited data transfer tool.</p><p>　　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

11、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

12、can understand the GSM will GPRS is a higher level.</p><p>　　Pictured: GPRS Simple Applications</p><p>　　GPRS charging methods and traditional GSM was also quite different, it is only by the dat

13、a 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 "onli

14、ne", 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&

15、lt;/p><p>　　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 really contact, so we sh

16、all not bring out a concept - AGPS.</p><p><b>　　AGPS</b></p><p>　　AGPS namely Assisted GPS, auxiliary global positioning system. It is combined with the traditional GSM/GPRS, using G

17、PS 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.

18、Therefore, AGPS can provide broader, more power, faster location-based services, the ideal range of error of 10 meters.</p><p>　　Pictured: AGPS chip</p><p>　　And even said, can realize the GPS p

19、ositioning, 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

20、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 provi

21、de this service is under</p><p>　　Finally, three sentences sum up:</p><p>　　1.GPS means "Global Positioning System", is a kind of positioning technology, used to identify the latitude

22、and longitude location of the object, at least ten years there will be no more advanced than the GPS positioning technology.</p><p>　　2.GPRS means "General Packet Radio data service", just a kind o

23、f data transmission, used to transfer data group, like to send SMS messages, does not have any position or burglar robbed function.</p><p>　　3.GPRS may say is in a GPS part, is the GPS technology applies to

24、one kind of transmission data function.</p><p>　　談GPS與GPRS的區(qū)別與聯(lián)系</p><p><b>　　中國GIS咨詢網(wǎng)</b></p><p>　　GPS與GPRS僅僅一字之差，使得很多人總是將兩者搞混。尤其是剛剛接觸GPS的朋友，總是會問：它和GPRS有什么區(qū)別和聯(lián)系呢那么，首先先讓我

25、們明確這兩者的確切定義。</p><p><b>　　何為GPS</b></p><p>　　GPS的英文全稱為Global Position System，通過簡單的翻譯之后我們便得到了：“全球衛(wèi)星定位系統(tǒng)”這樣的結(jié)果。從20世紀(jì)50年代后期開始，美國人用了30年，花了300多億美金，建造了如此一個輝煌龐大的系統(tǒng)，可以說是航天史上輝煌的一筆。</p>

26、<p>　　圖為：GPS導(dǎo)航衛(wèi)星</p><p>　　初建GPS全球定位系統(tǒng)的靈感誕生于子午線儀衛(wèi)星導(dǎo)航系統(tǒng)，而子午線儀衛(wèi)星導(dǎo)航系統(tǒng)無法顯示定點(diǎn)高程、定位精度與定位時間不如人意的缺點(diǎn)促使了GPS的誕生。</p><p>　　這套系統(tǒng)由24顆衛(wèi)星組成，以11小時58分為周期不間斷的圍繞著地球轉(zhuǎn)動，為我們提供圖片、數(shù)據(jù)。雖然遠(yuǎn)在12000公里的高空，卻可以洞察地球上的每個角落。因此，

27、起初這套設(shè)備僅僅是用于軍事和涉及國家重要利益的民用領(lǐng)域，鑒于它的巨大價(jià)值后來才真正用作民用，并且完全免費(fèi)?，F(xiàn)如今，GPS產(chǎn)品更是層出不窮，GPS手機(jī)、車載GPS、GPS模塊……于是，經(jīng)緯度這個概念也越來越多的被提起，于是我們穿梭于地球之上也就的越來越輕松自如。</p><p><b>　　GPRS又是什么</b></p><p>　　GPRS是Gerneral Pac

28、ker Radio Service的英文縮寫，中文譯為通信無線分組業(yè)務(wù)。目前國內(nèi)的GPRS運(yùn)營商是中國移動通信，其實(shí)我們經(jīng)常在發(fā)彩信的時候用到它，簡單的說，它是無限數(shù)據(jù)的一種傳輸工具。</p><p>　　具體來講，GPRS是在現(xiàn)有的GSM系統(tǒng)上發(fā)展出來的一種新的分組數(shù)據(jù)承載業(yè)務(wù)。GPRS與GSM系統(tǒng)最根本的區(qū)別是，GSM是一種電路交換系統(tǒng)，而GPRS是一種分組交換系統(tǒng)。GPRS特別適用于間斷的、突發(fā)性的或頻繁的

29、、少量的數(shù)據(jù)傳輸，也適用于偶爾的大數(shù)據(jù)量傳輸。我們可以將GPRS理解為GSM的一個更高層次。</p><p>　　圖為：GPRS簡單應(yīng)用案例</p><p>　　GPRS的收費(fèi)方式和傳統(tǒng)的GSM也有很大不同，它僅按數(shù)據(jù)流量計(jì)費(fèi)，即根據(jù)用戶傳輸?shù)臄?shù)據(jù)量來計(jì)費(fèi)，例如，我們在網(wǎng)上下載信息時，不是按上網(wǎng)時間計(jì)費(fèi)也就是說，只要不進(jìn)行數(shù)據(jù)傳輸，就算一直“在線”，也無需付費(fèi)。再做個“打電話”的比方，在使

30、用GSM+WAP手機(jī)上網(wǎng)時，就好比電話接通便開始計(jì)費(fèi)；而使用GPRE+WAP上網(wǎng)則要合理得多，就像電話接通并不收費(fèi)，只有對話時才計(jì)算費(fèi)用。 弄明白兩者的具體意思之后，不用講你就會明白，原來GPS和GPRS只是“樣貌”相似而已啊。不過，這兩個長相相近的家伙，倒是還真有些聯(lián)系，于是我們不得不再帶出一個概念——AGPS。</p><p><b>　　淺談AGPS</b></p>

31、<p>　　AGPS即Assisted GPS，輔助全球衛(wèi)星定位系統(tǒng)。它是結(jié)合 GSM / GPRS 與傳統(tǒng)衛(wèi)星定位，利用基地臺代送輔助衛(wèi)星信息，以縮減 GPS 芯片獲取衛(wèi)星信號的延遲時間、受遮蓋的室內(nèi)也能藉基地臺訊號彌補(bǔ)、減輕 GPS 芯片對衛(wèi)星的依賴度等等。 因此，AGPS 能提供范圍更廣、更省電、速度更快的定位服務(wù)，理想誤差范圍在 10 米以內(nèi)。</p><p><b>　　圖為：A

32、GPS芯片</b></p><p>　　也就算說實(shí)現(xiàn)GPS定位，完全可以通過GPRS網(wǎng)絡(luò)的幫助，使其更加的優(yōu)化。但是要實(shí)現(xiàn)AGPS技術(shù)除了要在手機(jī)內(nèi)增加GPS接收模塊之外，還需要改造手機(jī)天線、在移動網(wǎng)絡(luò)上加建位置服務(wù)器、差分GPS基準(zhǔn)站等等。如果再要提高GPS信號屏蔽地區(qū)的定位時效性，那么需要添加的技術(shù)就更多。因此，我們目前暫時還不提供該項(xiàng)服務(wù)還是能夠讓人理解的，而究竟何時我們才能在國內(nèi)用上該項(xiàng)技術(shù)也

33、不得而知。</p><p><b>　　最后用三句話總結(jié)：</b></p><p>　　1、GPS意為“全球衛(wèi)星定位系統(tǒng)”，是一種定位技術(shù)，用來確認(rèn)物體的經(jīng)緯度位置，至少十年內(nèi)不會有比GPS更先進(jìn)的定位技術(shù)。</p><p>　　2、GPRS意為“通用分組無線數(shù)據(jù)服務(wù)”，只是一種數(shù)據(jù)傳輸方式，用來傳遞數(shù)據(jù)組群，如同發(fā)送手機(jī)短信息，不具備任何定位