1. 7th European Conference on Space Debris, ESA/ESOC, April 2017, Darmstadt, Germany https://conference.sdo.esoc.esa.int/.
2. AGI Systems Tool Kit, online help, http://help.agi.com/stk/.
3. ASI, 2016, COSMO-SkyMed Mission and Products Description, Italian Space Agency Website, ASI-CSM-PMG-NT-001 (http://www.asi.it/sites/default/files/attach/bandi/cosmo-skymed_mission_and_products_description_update_2_1.pdf).
4. The Platform Design of Space-based Optical Observations of Space Debris;Chen;Chinese Astronomy and Astrophysics,2017
5. CO-II Project 2014, Design Justification File – NEO Segment: Phase 2, Issue 1 Rev.2, 17/04/2014 ESA Ref: SSA-CS-RS-DJF-0011.