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Feed-forward based remote sensing satellite ground receiving antenna servo control method and system

A ground receiving and remote sensing satellite technology, applied in the direction of radio transmission system, transmission system, electrical program control, etc., can solve the problems of inaccurate alignment of targets, antenna dynamic lag, lost targets, etc.

Inactive Publication Date: 2016-06-29
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI +1
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Problems solved by technology

It can be seen that for large-aperture antennas operating in the 25-27GHz frequency band, this control method is difficult to meet the above requirements. The sharp changes in the velocity and acceleration of the target before and after the top will cause the antenna to produce a dynamic lag and cannot be accurately aligned with the target. even miss the target

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  • Feed-forward based remote sensing satellite ground receiving antenna servo control method and system
  • Feed-forward based remote sensing satellite ground receiving antenna servo control method and system
  • Feed-forward based remote sensing satellite ground receiving antenna servo control method and system

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Embodiment Construction

[0060] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that these embodiments may be practiced without these specific details.

[0061] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In order to facilitate the understanding of the embodiment of the present invention, the structure of the device and the analysis of each key component will be further explained below in conjunction with the accompanying drawings, and the various illustrations and descriptions do not constitute a limitation to the embodiment of the present invention.

[0062] In order to realize the high dynamic performance of the remote sensing satellite ground receiving antenna servo system, the present invention adopts the compound feedforward control technology, that is, introduces ...

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Abstract

The invention provides a feed-forward based remote sensing satellite ground receiving antenna servo control method and system. The method comprises the following steps of carrying out processing such as coordinate conversion and differential filtering on a target position by compound control of target feed-forward; extracting target speed information as a feed-forward quantity; and feeding the feed-forward quantity to an input end of a speed loop so that a second-order zero steady-state error system is changed to an equivalent third-order steady-state zero-error system to improve equivalent zero steady-state error degree of the system. Therefore, the dynamic performance of the system is improved, and high-accuracy tracking of a high-dynamic and narrow-beam target is achieved.

Description

technical field [0001] The invention relates to the technical field of satellite ground data receiving stations, and more specifically, to a feedforward-based remote sensing satellite ground receiving antenna servo control method and system. Background technique [0002] With the development of earth observation technology and application requirements, the information rate that needs to be transmitted on the satellite-ground link is getting higher and higher, and the bandwidth occupied is getting wider and wider. Broadband high-speed transmission has become an inevitable trend of satellite-ground data transmission. In order to meet the transmission needs of massive data, the frequency band used by the transmission channel is also continuously increasing, and the satellite-to-earth data transmission channel is gradually transitioning from the X frequency band to the Ka frequency band. The available bandwidth of the Ka frequency band is wider, which can meet the transmission n...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185G05B19/04
CPCG05B19/04H04B7/18532H04B7/18586
Inventor 王万玉李日尚林波涛穆伟谷峰章秦王栋王强李凡刘智何元春
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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