卫星通信课件 beidou

He Jifeng
Many
emerging
industries have huge
demand for space-time
location services. The
national strategies of
informationization and
industrialization
integration, intelligent
Two satellites (plus one for backup）
Second Step 2004-2012
14 satellites covering the Asia-Pacific region positioning accuracy is better than 10 meters
Third Step 2014-2020
manufacturing
and
"Internet +" have also
provided new space for
the smart application of
BeiDou.
Sun Jiadong
It is necessary to
源自文库
demonstrate
the
reliability of BeiDou to
the public through
practical application
projects. We should
introduce more about
the actual use of BeiDou,
introduce what problems
it solves, and what are
the shortcomings in
BeiDou Navigation Satellite System
➢ domestic 、developed by China
➢ three parts：space segment, ground segment and user segment
➢ 5 GEO，27MEO， 3 GSO
First Step 1994-2003
complete the communication task as the international communication satellites few channel resources for communication
Positioning and navigation
Short message communication
After receiving the communication application signal, the terrestrial central station joins the continuously broadcast outbound broadcast message after being decrypted and reencrypted, and broadcasts the message to the user via satellite
Short message communication
the sender encrypts the communication request signal including the receiver ID number and the communication content, and then transmits the signal to the station by satellite
The receiver receives the outbound signal, demodulates and decrypts the outbound message. And the communication completes.
Yao Jianquan
Speaking from a new round of technological revolution and the Internet of Things and smart cities, we think that BeiDou system has many advantages such as space-time service and short message function.
using it.
May 23-25, 2017 at the 8th China Satellite Navigation Academic Annual Conference held in Shanghai National Convention and Exhibition Center
the theme of the conference is
positioning, so that everything is felt, and promote all things Internet.
Speaker：马晓威 PPT：耿雪
01
Introduction of BDS
02
Introduction of IoT
03
Application of BDS in IoT
At 19:45 on November 5, in the Xichang Satellite Launch Center, China successfully launched the first and second satellite of Beidou III, with the Long March III B carrier rocket, opening the Beidou Navigation Satellite System A new era of global networking.
2018 cover the countries along the Belt and Road 2020 global networking ， Benefit global users
Technology
All-weather, highprecision, fast realtime location services