A good paper related to BEIDOU (…

Recently a news related to BEIDOU seems exciting to all Chinesepeoples. And it seems a local area Navagation System withperformance similar to GPS/Galileo/GLONASS will be built in Chinasoon. The detailed information can be referred to the followingwebsite:

     中国将发射35颗北斗系统定位卫星精度10米(图)

However, in current stage, the principle of BEIDOU is muchdifferent from that of GPS (Globla Positioning System), and thepaper linked below precisely depicted the actual difference:
    “北斗”≠“ＧＰＳ”

Simply speaking, in current stage, if you want to use BEIDOU fornavigation purpose, the BEIDOU receiver should communicate with thebase station on earth. However, if you want to implement navigatinor positioning a vehicle or a car, it is not a must for your GPSreceiver to communicate with any EARTH STATION of GPS system. ( Ofcourse, DGPS is different, :-).)

It seems there is a long way for us to go, however the future isbrilliant and shining.

Ba-Jian
Nov. 4, 2006