Volume 30 Issue 5
Sep.  2010
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Article Contents
Wang Jianyu, Liu Yinnian, Fang Zhiyon, Yang Siquan, Nie Juan, Wu Wei, Liu Sanchao, Wang Lei, Wang Qiao, Wei Bin, Wang Changzuo, Zhang Feng, Yu Jin, Li Zhaozhou. Operation and application of A, B satellites for environment and disaster monitoring and forecasting[J]. Chinese Journal of Space Science, 2010, 30(5): 486-492. doi: 10.11728/cjss2010.05.486
Citation: Wang Jianyu, Liu Yinnian, Fang Zhiyon, Yang Siquan, Nie Juan, Wu Wei, Liu Sanchao, Wang Lei, Wang Qiao, Wei Bin, Wang Changzuo, Zhang Feng, Yu Jin, Li Zhaozhou. Operation and application of A, B satellites for environment and disaster monitoring and forecasting[J]. Chinese Journal of Space Science, 2010, 30(5): 486-492. doi: 10.11728/cjss2010.05.486

Operation and application of A, B satellites for environment and disaster monitoring and forecasting

doi: 10.11728/cjss2010.05.486
  • Received Date: 1900-01-01
  • Rev Recd Date: 1900-01-01
  • Publish Date: 2010-09-15
  • Environment and disaster monitoring and forecasting small satellite constellation A and B satellites (HJ-1-A, B) are called "environment and disaster reduction satellites A and B'' for short. The constellation adopts a 10:30 LT sun-synchronous circular orbit, with orbit altitude of 649 km. HJ-1-A and HJ-1-B are distributed with a phase difference of 180º in the same orbital plane, so as to enhance the time resolution of earth observation. The satellites have orbit maintenance capability, the lifetime is 3 years. Both satellites adopt CAST968 platforms. Two wide-coverage multispectral CCD cameras with resolution 30 m and width 700 km, a super-spectral imager with resolution 100 m and width 50 km as well as a data transmission subsystem of 120 Mbit/s are deployed on HJ-1-A, which also carries Ka communication testing equipment of Thailand. HJ-1-B has two wide-coverage multispectral CCD cameras (the same as satellite A), one infrared camera with resolution 150 m and width 720 km and a data transmission subsystem of 60 Mbit/s. The coverage period of the wide-coverage multispectral CCD camera is 48 hours. The revisit period of super-spectral imager is 96 hours and the coverage period of infrared camera is 96 hours.

     

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