Method for adjusting remote sensing satellite absolute calibration attitude relative to moon

An adjustment method and satellite technology, applied in the field of moon imaging, which can solve problems such as inability to identify, blurry images of the moon, and lack of consideration of the imaging principle of remote sensors.

Active Publication Date: 2016-04-13
AEROSPACE DONGFANGHONG SATELLITE
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AI Technical Summary

Problems solved by technology

This type of imaging method does not take into account the imaging principle of the remote sensor, and the obtained moon image is blurred or even unrecognizable.

Method used

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  • Method for adjusting remote sensing satellite absolute calibration attitude relative to moon
  • Method for adjusting remote sensing satellite absolute calibration attitude relative to moon
  • Method for adjusting remote sensing satellite absolute calibration attitude relative to moon

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Embodiment

[0106] like figure 1 As shown, a method for adjusting the attitude of a remote sensing satellite to the absolute calibration of the moon, the steps are as follows:

[0107] (1) In the simulation tool, the models of the moon, satellites and sensors on the star are set up, the satellite attitude and the sensor parameters on the star are set; the series direction of the remote sensor is coincident with the X-axis of the satellite body; the sensor on the star adopts TDICCD; wherein, TDICCD is a linear array time-delay integral CCD, and the simulation tool is the satellite toolkit STK.

[0108] In this step, STK is used as a simulation tool. First, create a new moon; second, create a new satellite, and input orbital parameters, including epoch time, semi-major axis, eccentricity, orbital inclination, perigee depression angle, ascending node accuracy, and mean anomaly angle. The HPOP disturbance model of the earth is selected as the derivation model of the satellite orbit, and EOP...

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Abstract

The invention relates to a method for adjusting remote sensing satellite absolute calibration attitude relative to moon and belongs to the technical field of imaging relative to moon. Through rotation of a satellite around a satellite attitude Z axle, crosswise image motion of the remote sensing satellite absolute calibration relative to moon is prevented. Based on high-precision sampling data, through algorithm modeling recursion, a satellite attitude control angular speed is obtained and through integration of the satellite attitude control angular speed, a control rule of a satellite yawing axis attitude angle is obtained. The method realizes satellite attitude maneuvering imaging. In attitude adjustment method design, through adjustment of a method for acquiring an observation speed-height ratio based on moon as a view field center through control of rotation of a satellite around a satellite Y axle, accurate attitude angle data in a period is acquired and used so that longitudinal image motion of absolute calibration relative to moon is prevented. In an absolute calibration period, through control of a simulation time step n of a simulation tool set, multiple sampling point numbers are acquired and are used as input of a mathematic model so that modeling and simulation precision is improved.

Description

technical field [0001] The invention relates to a method for adjusting the attitude of remote sensing satellites to the absolute calibration of the moon, and belongs to the technical field of moon imaging. Background technique [0002] The on-orbit calibration of my country's remote sensing satellites is still based on real objects on the earth's surface, and the means are relatively simple, and important auxiliary tools such as space stars are rarely used. This is a very important means for improving the imaging quality of my country's remote sensing satellites. . In celestial calibration, daily calibration is widely used. However, because the sunlight is too strong, it generally exceeds the dynamic range or even the tolerance of the remote sensor. The remote sensor cannot directly face the sun, so it is necessary to use a diffuser plate to reflect the sun’s rays, and the diffuser plate is exposed to space radiation for a long time, and it will degrade with life. , and is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/24
CPCG01C21/24
Inventor 黄群东于灵慧谭田高涵
Owner AEROSPACE DONGFANGHONG SATELLITE
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