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Moon relative calibrating posture adjustment method by remote sensing satellite

A technology for remote sensing satellites and satellites, which is applied in the field of moon imaging, and 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: 2016-03-30
AEROSPACE DONGFANGHONG SATELLITE
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  • Description
  • Claims
  • Application Information

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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  • Moon relative calibrating posture adjustment method by remote sensing satellite
  • Moon relative calibrating posture adjustment method by remote sensing satellite
  • Moon relative calibrating posture adjustment method by remote sensing satellite

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Experimental program
Comparison scheme
Effect test

Embodiment

[0107] (1) Through STK simulation, the visible time window of the monthly calibration from January 1 to January 2, 2018 is determined. Combined with the conditions of monthly calibration, select 2018-1-118:30:00 to 2018-1-118:30:30 as the calibration time period.

[0108] Table 1 Visible timetable

[0109]

[0110] (2) The velocity vector V of the satellite in the J2000 coordinate system s and the velocity vector V of the moon in the J2000 coordinate system m ;

[0111] Table 2 Velocity in the satellite J2000 coordinate system

[0112] Time (UTCG)

vx(km / sec)

vy (km / sec)

vz(km / sec)

30:00.0

1.009693

-0.264771

7.46506

30:01.0

1.007636

-0.272615

7.465056

30:02.0

1.005577

-0.280459

7.465043

30:03.0

1.003518

-0.288302

7.465021

30:04.0

1.001457

-0.296146

7.464991

30:05.0

0.999395

-0.303988

7.464952

30:06.0

0.997331

-0.311831

7...

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Abstract

The invention relates to a moon relative calibrating posture adjustment method by a remote sensing satellite, belonging to the moon imaging technology field and realizing the relative moon calibrating by the satellite. The moon relative calibrating posture adjustment method by a remote sensing satellite comprises steps of determining a relative calibration time quantum meeting the condition according to simulation, determining the speed of the satellite relative to the moon according to on-board orbit forecast data, determining an initial posture angle of the moon relative calibration by the satellite through double-vector posture fixation by combining a vector of a Z axis, along which the satellite is pointed to the moon, determining a posture angular velocity in the process of relatively calibration of the moon according to the anaylsis of the moon imaging parameter, eliminating the remote controller image displacement problem in the process of absolute calibration of the moon, determining the gesture angle of the relative calibration of the moon according to a gesture four element motion equation, and simulating and designing the satellite gesture track planning trace. The designing method of the invention can be applied in the moon relative calibration by the satellite.

Description

technical field [0001] The invention relates to a method for adjusting the relative calibration attitude of a remote sensing satellite to 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 easily...

Claims

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Application Information

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IPC IPC(8): G05D1/08
CPCG05D1/0825
Inventor 黄群东于灵慧谭田高涵
Owner AEROSPACE DONGFANGHONG SATELLITE
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