A de-orbit method for geostationary communication satellites

A geostationary orbit, communication satellite technology, applied in the direction of artificial satellites, space navigation equipment, space navigation aircraft, etc., can solve the problem of inaccurate estimation of the remaining propellant, inability to complete deorbit, unsuccessful deorbit, etc. , to facilitate the adjustment of the control strategy, ensure the visible measurement and control time of the cruise, and achieve the effect of small impact

Active Publication Date: 2022-06-21
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology

[0008] For a long time, there is no unified method for the deorbiting of geostationary orbit communication satellites. Many satellites have failed in the deorbiting process or failed to deorbit successfully, which brings great risks to satellites in orbit or subsequent satellites to be launched; At the end of the satellite’s service life, the estimation of the remaining amount of general propellant is inaccurate or less, and there may be situations where deorbiting cannot be completed due to insufficient propellant; Deorbiting program for communication satellites to ensure successful deorbiting

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  • A de-orbit method for geostationary communication satellites
  • A de-orbit method for geostationary communication satellites

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Embodiment Construction

[0051] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0052] A de-orbit method for geostationary orbit communication satellites is mainly divided into three parts: de-orbit maneuver control method; propellant emptying; satellite passivation method. Follow the following principles: safe and controllable; batch and reasonable iteration; easy to operate.

[0053] Specific steps are as follows:

[0054] Step 1. Satellite health check and status setting: a) Conduct a comprehensive health check on the satellite control sub-system, power sub-system, measurement and control sub-system, propulsion sub-system, transponder sub-system, etc. to confirm the normal working status; Sensitive measurement equipment such as solar sensor, star sensor and other sensitive measurement equipment to carry out health inspection; b) Status setting: calibrate the thruster, determine the ignition pulse width and period; test and cont...

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Abstract

The invention discloses an off-orbit method for geostationary communication satellites, which is suitable for the off-orbit operation of GEO communication satellites, especially considering the characteristics of communication satellites, and proposes a targeted method to meet the off-orbit According to the actual requirements of the orbit operation; according to the orbit requirements of the off-orbit, a method of combining the average amount of maneuvering and the correction amount of maneuvering is proposed. ; It is proposed that the thruster consumes propellant periodically relative to the jet in cruise mode, which has high efficiency and has little impact on attitude; at the same time, this method requires that the uplink measurement and control interfere with adjacent GEO satellites during the entire deorbit control process of the satellite , to ensure that the cruise can see the measurement and control time.

Description

technical field [0001] The invention belongs to the technical field of on-orbit management at the end of a spacecraft's life, and in particular relates to an off-orbit method for a geostationary orbit communication satellite. Background technique [0002] At present, there are dozens of communication satellites in orbit in my country, most of which are Geostationary Orbit (GEO) satellites, which provide high-quality and reliable services for radio and television, broadband applications and other fields. With the wide application of GEO communication satellites, the number of in-orbit communication satellites that are about to reach the end of their design life is increasing. The geostationary orbit is a scarce basic space resource. According to the international unified standard, it is necessary to timely and accurately transfer the satellite out of the geostationary orbit and put it into the expected abandoned orbit after the satellite life expires, so as to complete the de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/10B64G1/24
CPCB64G1/1007B64G1/242
Inventor 李志强王晓晨彭守诚秦巍张香燕刘建功刘景勇田华东戴雪扬张芸香
Owner BEIJING INST OF SPACECRAFT SYST ENG
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