Military of China, force comment.
Military of China, force comment.

data Figure: China’s satellite three-dimensional image

BEIJING, Oct. 31 – According to the China Aerospace Science and Technology Corporation website news at 8:25 on October 3, by the China Aerospace Science and Technology Corporation to avoid the implementation of China’s first space satellite waste and orbit control task completed successfully.

According to reports, the orbit control the completion of good quality – the altitude error of less than 4 meters, less than three hundred thousandths eccentricity error, collision probability dropped to 10-7 the following; safe and secure operation of Well, in the domestic manageable step by step, to form China’s response measures to avoid the collision mechanism of the first successful case.

China Aerospace Science and Technology Corporation eight three Deputy Director of Scientific Research introduced Zhang Yifu, at 17:00 on October 1, he suddenly received an emergency call – according to the monitoring network communications and China stations sure, a space waste in at 4:30 on October 3, close to a Chinese satellite in orbit track, the shortest distance of about 200 meters, the probability of a collision much. If you are running satellites and high-speed flight collision of waste, the consequences would be disastrous!

not have any delay, Zhang Yifu immediately with the satellite model, “two general” Zhuhong Chang, in Weimin made contact, quickly activate contingency plans.

one hand, the coordination of relevant units, to obtain information about the track notice; the other hand, the organization 509 to control the technology backbone, the long-term co-management in the emergency station set to discuss countermeasures. This caused the leaders at all levels attach great importance to requirements “must go all out to ensure the safe operation of the satellite.”

according to Xi’an and Beijing, and the waste of space satellite in orbit with the situation of monitoring data, via satellite in general, satellite monitoring, coordination and communication between users, decided to immediately implement the orbit of the satellite to circumvent security controls measures.

in accordance with this requirement, type “two always” do the same night to discuss the project and orbit control measures, and the organization of elite teams in the morning to go out two emergency treatment: type commander, chief designer with Some technical staff rushed to Xian, deputy chief designer went to the Beijing model, for technical support.

10 2 December, afternoon, according to the latest forecast track data, the next morning waste from recent satellite radial distance may be only 160 meters more than the original forecast of recent data, more of a threat.

the orbit control unit held its first joint meeting of clear “to ensure the safe operation of the satellite, and orbit control to ensure the implementation of safety” and “double insurance” policy, and steps to develop the rail control, namely: seen in monitoring stations within the satellite to confirm the status, then rise into the packet to the satellite to achieve orbit control, to avoid the risk of collision. Orbit control parameters by injecting packets, several seconds after the satellite jet, to achieve the orbital position of adjustment.

10 3, continue to track the satellite measurement, monitoring satellite state.

4:57, monitoring data show that the star status is normal, has safely crossed the notice may have been a collision with the waste of space warning area. 6:49, accurate measurement of complete satellite orbit, attitude and orbit control and orbit control system is fully restored before the state. The investigation and the other to track space debris impact probability has dropped out of the top 10 warning.

this point, all the track to complete the implementation of control measures, the first time the success of the initiative to avoid the waste of space. (Chen Weixia)