1. NASA (2019) Orbital debris quarterly news. NASA Orbital Debris Q News 23(4):1–10
2. Hoots FR, Roehrich RL (1980) Spacetrack Report NO.3: models for propagation of two element sets. North American Aerospace Defense Command, United States Air Force. https://wenku.baidu.com/view/7ba6f242be1e650e52ea99a2.html
3. https://www.space-track.org
4. Chunyih H, Dayung K et al. (2011) Low-cost rapid TLE updating method for nano-satellites using doppler signature. In: AIAA Space 2011 Conference and Exposition, Long Beach, California.
5. Montenbruck O, Gill E (2000) Real-Time Estimation of SGP4 Orbital Elements from GPS Navigation Data. In: International Symposium Space Flight Dynamics, Biarritz, France.