Volume 38 Issue 1
Jan.  2018
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TANG Zhimei, DING Zonghua, DAI Liandong, WU Jian, XU Zhengwen. Comparative Analysis of Space Debris Gaze Detection Based on Two Incoherent Scattering Radars Located at 69°N and 78°N ormalsize[J]. Journal of Space Science, 2018, 38(1): 73-78. doi: 10.11728/cjss2018.01.073
Citation: TANG Zhimei, DING Zonghua, DAI Liandong, WU Jian, XU Zhengwen. Comparative Analysis of Space Debris Gaze Detection Based on Two Incoherent Scattering Radars Located at 69°N and 78°N ormalsize[J]. Journal of Space Science, 2018, 38(1): 73-78. doi: 10.11728/cjss2018.01.073

Comparative Analysis of Space Debris Gaze Detection Based on Two Incoherent Scattering Radars Located at 69°N and 78°N ormalsize

doi: 10.11728/cjss2018.01.073
  • Received Date: 2017-02-22
  • Rev Recd Date: 2017-05-02
  • Publish Date: 2018-01-15
  • Based on the joint observation of two incoherent scattering radars located at 69°N and 78°N, parameters including the height, radial velocity, Radar Cross-section, and effective diameter etc. are obtained. Statistical analysis on these data is made and conclusions are drawn as follows. The space debris detected by the two radars are distributed at the height from 500 to 1100km and from 1400 to 1600km, but the number of pieces detected by the radar located at 78°N is more than that detected by the radar at 69°N. The radial velocities are almost distributed in -1.5~1.5km…-1 and more of them are negative, which shows that most of the debris move far away from the Earth in this detection. The RCS is about 10-5~10-2m2 and the effective diameter is about 3~10cm at 69°N, and the RCS is about 10-6~10-2m2 and the effective diameter is about 2~6cm at 78°N. The minimum size of space debris detected by the radar located at 78°N is bigger than the one detected by the radar at 69°N, which means that the detection power of the radar located at 69°N is stronger than the radar at 78°N at the same height. Concluding the repeat testing number after setting up reasonable criterion parameters, the two radars located at 69°N and 78°N respectively have 32 and 14 repeat numbers, and 4 repeat numbers overlapped. These results show the good perspective in the fragment cataloging and modeling of the space debris.

     

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