China launches electromagnetic satellite to study earthquake precursors
Source: Xinhua| 2018-02-02 16:38:53|Editor: Lifang
by Xinhua writers Quan Xiaoshu, Liu Wei
JIUQUAN, Feb. 2 (Xinhua) -- China on Friday launched its first seismo-electromagnetic satellite to study seismic precursors, which might help establish a ground-space earthquake monitoring and forecasting network in the future.
A Long March-2D rocket launched at 15:51 from Jiuquan Satellite Launch Center, in northwest China's Gobi Desert, carried the 730-kilogram China Seismo-Electromagnetic Satellite (CSES) into a sun-synchronous orbit at an altitude of about 500 kilometers.
Known as Zhangheng 1 in Chinese, it will help scientists monitor the electromagnetic field, ionospheric plasma and high-energy particles for an expected mission life of five years, said Zhao Jian, a senior official with China National Space Administration (CNSA).
The satellite is named after Zhang Heng, a renowned scholar of the East Han Dynasty (25-220), who pioneered earthquake studies by inventing the first ever seismoscope in the year 132.
Zhangheng 1 will record electromagnetic data associated with earthquakes above 6 magnitude in China and those above 7 magnitude around the world, in a bid to identify patterns in the electromagnetic disturbances in the near-Earth environment, Zhao said.
Covering the latitude area between 65 degrees north and 65 degrees south, it will focus on Chinese mainland, areas within 1,000 kilometers to China's land borders and two major global earthquake belts.
Zhangheng 1 was funded by CNSA, developed by China Earthquake Administration (CEA) and produced by DFH Satellite Co., Ltd., a subsidiary of China Academy of Space Technology (CAST).
Based on a CAST2000 platform, Zhangheng 1 is a cubic satellite, 1.4 meters on each side. It has a single solar panel and six booms, which will deploy and keep electromagnetic detectors more than 4 meters away from the satellite, said Zhou Feng, a senior manager with DFH Satellite Company.
It carries a high-precision magnetometer, a search-coil magnetometer and electric field probes to measure components and intensity of the magnetic and electric fields. It is also equipped with a Langmuir probe, a plasma analyzer, a GNSS occultation receiver and a tri-band beacon to measure in-situ plasma and ionospheric profile as well, Zhou said.
It also carries high-energy particle detectors, some of which are provided by Italian partners, and a magnetic field calibration device developed in Austria, according to Zhou.
China launches first shared education satellite
Source: Xinhua| 2018-02-02 17:14:06|Editor: Lifang
JIUQUAN, Feb. 2 (Xinhua) -- China's first shared education satellite, Young Pioneer 1, carried by the Long March-2D rocket, was launched into space from Jiuquan Satellite Launch Center Friday afternoon.
The 3-kg CubeSat (100 * 100 * 340mm), Young Pioneer 1, enters an orbit of 502 km above the Earth. The rocket also carried Zhangheng 1, an electromagnetic satellite to study earthquake data, and five other miniaturized satellites.
Young Pioneer 1 was manufactured and tested by Commsat, a Beijing-based private satellite company funded by the Xi'an Institute of Optics and Precision Mechanics under the Chinese Academy of Sciences (CAS).
It will perform wireless storage and transmission of radio waves at UV frequency, space imaging and the verification of user links to the Internet of Things, said Xie Tao, founder and CEO of Commsat.
After in-orbit tests, Young Pioneer 1 will share its data resources with primary and secondary schools and other education institutions equipped with sub-stations in China. It will provide students with experiences like wireless communication and space photography, Xie said.
"Since our company is based in an industrial park for start-ups, Young Pioneer 1 could also be seen as China's first satellite made in a warehouse," Xie said.
After working for the state-run China Aerospace Science and Technology Corporation for more than a decade, Xie resigned in 2014 and set up his own company in June 2015.
The shift from state-run companies to entrepreneurial warehouse indicates the increasing diversity and opportunities in China's aerospace industry.
Xie believes his company, a pioneer of commercial satellites, is more market-oriented, closer to the public and "down to earth."
"We have equipped Young Pioneer 1 with an intelligent CPU chip that will enable the satellite to restart if problems occur, just like a smart phone. In the future, the chips will be upgraded very quickly, which will help us make more intelligent nanosatellites with more functions," he said.
"To cut costs, commercial satellites also use cheaper components and parts, unlike state space missions, which are usually of strategic importance and must have no mistakes," he added.