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China launches 2nd oceanic survey satellite
www.chinanews.cn 2007-04-12 09:35:12
(Source: Xinhua)
China launched its self-made "Haiyang-1B" oceanic survey satellite from
the Taiyuan Satellite Launch Center in Shanxi Province at 11:27 am
Wednesday, April 11, 2007.
Apr.11 - China successfully launched its second oceanic survey satellite
"Haiyang-1B" (Ocean 1B) from Taiyuan Satellite Launching Center on
Wednesday.
The China-made satellite was launched at 11:27 a.m. and reached the
target orbit aboard a Long March-2C carrier rocket, China's most senior
ocean research official said.
The "Haiyang-1B", a crucial component of China's three dimensional
oceanic survey system, would be used to monitor the color and temperature
of the ocean, said Sun Zhihui, director of the State Oceanic
Administration.
The satellite would aid China's development and utilization of oceanic
resources, construction of ports, monitoring and prevention of oceanic
pollution, resource investigation and the development of coastal areas as
well as for study of global environmental changes, he said.
China launched its first oceanic survey satellite "Haiyang-1A" in May
2002 to monitor ocean color and temperature using remote sensing
technology
"Haiyang-1A" monitored the Bohai Sea, the Yellow Sea, the East China Sea
and the South China Sea.
Chief scientist Bai Zhaoguang said the "Haiyang-1B" is an upgraded
version of the earlier model.
"The operational life of 'Haiyang-1B' is expected to reach three years, a
year longer than 'Haiyang-1A'. The new satellite provides three times as
much information," he said.
"The satellite's observational devices now have a 3,000-kilometer range
-- up from 1,300 kilometers -- and its imaging devices provide higher
resolution photography," he added.
Haiyang-1B had a stronger structure than Haiyang-1A, enabling it to
withstand stronger shocks and jolts, he said.
Bai said the Haiyang-1B had software and Internet capabilities that
allowed it to repair itself in space, saying 10 computers worked together
to repair the spacecraft in the event of a technical breakdown.
The breakdown of a solar cell driver shortened Haiyang-1A's operational
life. But Haiyang-1B's improved technology would enable it to solve this
kind of problem by itself, Bai said.
The "Haiyang-1A", China's first experimental satellite to use ocean color
detecting, worked for 685 days from May 2002 to April 2004 with an
operational life shorter than the designed lifespan of two years.
During its operation, it completed 1,830 surveys and provided oceanic
information for 126 users including the oceanic administration, producers
of oceanic products, research institutes and universities.
SOA director Sun Zhihui said China would develop five more oceanic
satellites in the medium term, saying satellites were urgently needed to
develop the country's marine economy, provide a marine early warning
system and safeguard the nation's maritime rights.
"Haiyang-1B" is developed by the China Academy of Space Technology of
China Aerospace Science and Technology Corp (CASTC). It was launched on
the 96th flight of a Long March carrier rocket, which was developed by
the China Academy of Launch Vehicle Technology of the CASTC.
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