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Attitude Control Method for Imaging Calibration

A technology of attitude control and attitude, which is applied in the field of attitude control of imaging calibration, can solve the problems of aircraft attitude control literature without imaging calibration, and ground calibration methods cannot meet high-precision remote sensing, etc., to shorten the time to enter the steady state, The effect of improving the accuracy of attitude determination and good attitude control quality

Active Publication Date: 2015-12-30
BEIJING INST OF CONTROL ENG
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Problems solved by technology

[0002] With the change of space environment conditions, the performance of remote sensors in orbit, such as the responsivity of CCD devices, will have new impacts. With the continuous improvement of space mission requirements, traditional ground calibration methods can no longer meet the requirements of high-precision remote sensing. demand, the remote sensor development unit proposed an imaging calibration method for a certain angle of the aircraft’s in-orbit attitude maneuver (for example, the ground imaging remote sensor requires the aircraft to maneuver at a yaw angle of 90 degrees), not only for the attitude maneuver time and attitude bias steady-state flight time requirements, and put forward requirements for attitude determination accuracy, stability and pointing accuracy during steady-state flight
[0003] There are many literatures on remote sensor calibration in the past, but they only focus on the calibration method, and there is no literature on aircraft attitude control for imaging calibration

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  • Attitude Control Method for Imaging Calibration
  • Attitude Control Method for Imaging Calibration
  • Attitude Control Method for Imaging Calibration

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Embodiment Construction

[0025] like figure 1 As shown, the present invention provides a method for attitude control of imaging calibration, comprising the following steps:

[0026] (1) The installation layout of the sensor

[0027] Consider the installation of gyro and star sensors:

[0028] 1) The installation of the gyro is determined according to the maximum maneuvering angular velocity requirement, so that the gyro is not saturated during the attitude control, that is, where R g is the installation position of the gyro, ω j is the maneuvering angular velocity demand, ω gmax is the measurement range of the gyroscope;

[0029] 2) Try to have one star sensor to meet its on-orbit use requirements during attitude maneuvering, and the installation of star sensors to meet its on-orbit use requirements and attitude determination accuracy requirements during attitude offset steady-state flight. The requirements for on-orbit use include angular velocity requirements and shading performance requireme...

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Abstract

A method for imaging calibration attitude control comprises the following steps: (1) installing layout of a sensor; (2) installing layout of an executing mechanism; (3) attitude determination; (4) attitude track planning; (5) attitude control error calculation; and (6) attitude control. An attitude determination method can be independently selected in imaging calibration, attitude correction or attitude updating is introduced in the attitude maneuver process, the method for imaging calibration attitude control is suitable for normal conditions of a top, also adapts to fault conditions of the top and is favorable for prolonging service life and an air vehicle and safety and reliability; and an attitude control algorithm in comprehensive design provides high-quality attitude and is favorable for on-track imaging calibration of a remote sensor.

Description

technical field [0001] The invention belongs to the field of automatic control of aircraft (aviation and aerospace), and relates to an attitude control method for imaging calibration. Background technique [0002] With the change of space environment conditions, the performance of remote sensors in orbit, such as the responsivity of CCD devices, will have a new impact. With the continuous improvement of space mission requirements, traditional ground calibration methods can no longer meet the requirements of high-precision remote sensing. demand, the remote sensor development unit proposed an imaging calibration method for a certain angle of the aircraft’s in-orbit attitude maneuver (for example, the ground imaging remote sensor requires the aircraft to maneuver at a yaw angle of 90 degrees), not only for the attitude maneuver time and attitude bias steady-state flight time Moreover, the attitude determination accuracy, stability and pointing accuracy during steady-state flig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/28B64G1/36
Inventor 王新民曾春平田科丰董筠宗红谢晓兵李丽琼徐子荔
Owner BEIJING INST OF CONTROL ENG
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