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An anti-jamming filtering method for satellite attitude channel without dragging

A non-towing satellite and attitude technology, applied in attitude control, space navigation equipment, space navigation aircraft, etc., can solve the problems of high conservatism and insufficient consideration of multi-source interference, and achieve the effect of improving overall performance

Active Publication Date: 2017-06-06
BEIHANG UNIV
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Problems solved by technology

[0004] The technical problem of the present invention is: to overcome the problem that the existing control method for the attitude channel of the tow-free satellite does not fully consider the multi-source interference and is relatively conservative, and designs an anti-jamming filtering method for the attitude channel of the tow-free satellite

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  • An anti-jamming filtering method for satellite attitude channel without dragging
  • An anti-jamming filtering method for satellite attitude channel without dragging
  • An anti-jamming filtering method for satellite attitude channel without dragging

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail

[0028] Such as figure 1 Shown, the specific implementation steps of the present invention are as follows:

[0029] (1) Establish the mathematical model of the non-drag satellite attitude channel with multi-source interference:

[0030] The control goal of the no-tow satellite attitude channel is to make the body coordinate system of the no-tow satellite track the orbit coordinate system. Based on this, the dynamic equation of the no-tow satellite attitude channel can be expressed as:

[0031]

[0032] Among them, J(t) is the time-varying inertia matrix of the untowed satellite, ω(t)=[ω sc ] sc is the expression of the absolute angular velocity of the no-tow satellite in the body coordinate system of the no-tow satellite, θ 0 、ψ 0 are the Euler angles of the body coordinate system of the undragged satellite relative to the orbit coordinate syst...

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Abstract

The present invention relates to an anti-interference filtering method of a drag-free satellite attitude channel. Aiming at the drag-free satellite attitude channel of multi-source interference consisting of an atmospheric drag torque, an solar radiation pressure torque, a gravity gradient torque, inertia uncertainty, actuating mechanism noise, measurement noise, model uncertainty and the like, the method comprises: firstly, building a mathematical model including the drag-free satellite attitude channel of multi-source interference; secondly, building a mathematical model of an external environment interference torque; thirdly, designing an anti-interference filter aiming at the drag-free satellite attitude channel; and finally, designing an optimal controller to perform feedback control. The anti-interference filtering method of a drag-free satellite attitude channel is high in anti-interference capability, is high in control precision and the like, and is able to be used in the drag-free satellite attitude channel.

Description

technical field [0001] The invention relates to an anti-interference filtering method of a non-drag satellite attitude channel, which can be applied to the anti-interference filtering of the non-drag satellite attitude channel. Background technique [0002] Tow-free satellites are currently widely used in the measurement of the Earth's gravity gradient field. The high-precision Earth's gravity gradient field model can meet the urgent needs of earthquake monitoring, surveying and mapping support, marine meteorology, and resource exploration, which greatly promotes disaster prevention and economic development in China. Social development. Since the beginning of the 1960s, foreign scholars have conducted a lot of research on drag-free control technology, and have successfully launched several drag-free satellites, and obtained ideal control effects and experimental data, including the CHAMP satellite of Germany and the GRACE satellite of the United States. satellite and ESA's ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D1/08
CPCB64G1/244
Inventor 郭雷迟伟杰乔建忠朱玉凯李文硕
Owner BEIHANG UNIV
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