beidou is easy to use, and the next generation will be even better
2024-10-04
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in life, it seems difficult for us to notice the existence of beidou. but in fact, it has always been there and affects us all the time.
the punctual sound of the alarm clock in the morning is the precise timing of beidou and 5g cooperation; the nearest shared bicycle downstairs, the optimal route selected by the commuter bus, and the countdown of the traffic light countdown are all based on beidou’s precise positioning and navigation... in beidou can be found in many unexpected places.
today, xinhua interview launches the "chief engineer of great powers" series of interviews, with an exclusive interview with yang changfeng, chief engineer of beidou satellite navigation system engineering, to tell everyone how beidou came to be around us, and what new expectations the next generation of beidou will have.
frequency orbits used by beidou
it was obtained through competition with other countries 17 years ago.
2007 is a critical year in the history of beidou system construction
that year, yang changfeng felt that
more thrilling than the storyline in the movie
prerequisites for launching navigation satellites into space
it is necessary to have legal orbital location and frequency resources
early stage of construction of beidou system
there is a shortage of high-quality space frequency resources internationally.
after many twists and turns
itu finally allocates resources to china
legal use of frequency bands as satellite navigation
however, the itu stipulates
navigation satellites must be launched within 7 years
and successfully received the return signal
will automatically expire if expired
to save april 17, 2007
this final launch "window"
beidou people work day and night to tackle key problems
however, before launch, the transponder on the satellite suddenly experienced an abnormality.
after discussion and analysis
the beidou team still dismantled the star-arrow assembly with the tower already erected.
take out the satellite answering machine
three days and three nights without sleep
troubleshooting successfully
april 14, 2007
the launch of this satellite with an important mission
three days later, the signal from the satellite was successfully received.
at that moment, it was less than 4 hours before the frequency deadline.
unique "inter-satellite link"
let china’s “beidou” serve global users
as the chief designer of the beidou satellite navigation system project
yang changfeng reflects on his ten years with "beidou"
he feels that they face the biggest challenge
it is a solution to the domestic construction of beidou system to achieve global operation and services.
at that time, beidou people pioneered the idea of
using inter-satellite links to solve this problem
yang changfeng said that the "inter-satellite link" is equivalent to
"threading the needle" between two satellites thousands of miles apart
in addition, at that time, the international community
the inter-satellite link has not really entered the engineering construction stage.
it can be said to be even more difficult
the road to independent research and development is destined to encounter many difficulties and hardships
yang changfeng leads the team and is not afraid of difficulties
after years of research
finally developed inter-satellite link technology that belongs to china’s independent intellectual property rights
let all "beidou" satellites in orbit and satellites "hand in hand"
"it's not difficult if you dare to do it."
yang changfeng said
beidou satellite navigation system developed from scratch
from existence to excellence, many difficulties encountered in construction are global problems
with the chinese people’s spirit of not admitting defeat and not being afraid of difficulties,
breaking down one "hard nut" after another
beidou of the future
it is a national comprehensive time and space system
high-precision positioning
it is a major feature of the beidou satellite navigation system.
it can capture positional movements of a few millimeters
it can also transmit extremely precise time
accurate to within 1 second of millions of years
becoming the third mature global satellite navigation system in the world
in addition, yang changfeng is proud of
there are also the "special functions" of the beidou system
especially in asia pacific
short message communication, satellite-based enhancement, precise single point positioning and ground-based enhancement
these four regional services are not available in other satellite navigation
at present, the beidou system has fully served transportation,
ecological environmental protection, disaster relief and reduction, etc.
integrate into infrastructure such as power, finance, and communications
extensively enter the fields of mass consumption, sharing economy and people's livelihood
in 2023, my country’s satellite navigation and location service industry
the overall output value reached 536.2 billion yuan
“the applications of beidou are only limited by imagination”
yang changfeng is looking forward to
as beidou is deeply integrated into the national economy
more new productive forces will be spawned
beidou-3 is not the end
yang changfeng believes
in 2035, they will build a more ubiquitous,
a more integrated and intelligent national comprehensive space-time system
by then, from indoor to outdoor, from deep sea to deep space
users will enjoy full coverage,
highly reliable navigation and positioning services
planning: chu xuejun che yuming
coordinator: li xiaoyun and li you
director: yu ziru, liu yuanyuan, tang zihan
video production: liu xia
host: xu danrui
director: li heming, peng yuhe
photography: zhao peng, gao minhui, wang xiaoji, dong zihan, li qinjia
design: deng haomata
acknowledgments: china satellite navigation system management office
