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Method for processing interference in infrared earth sensor from moon through medium and high orbiting satellite

An earth sensor and high-orbit technology, applied in instruments, measuring devices, surveying and navigation, etc., can solve problems such as the inability to interfere with the moon, and achieve the effects of easy implementation, simple design process, and expanded selection range

Active Publication Date: 2013-11-27
BEIJING INST OF CONTROL ENG
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Problems solved by technology

Due to the intensive launch of navigation satellites in batches, there are more constraints on the selection of the launch window, and it is impossible to avoid moon interference during the capture of the earth as a constraint for window selection

Method used

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  • Method for processing interference in infrared earth sensor from moon through medium and high orbiting satellite
  • Method for processing interference in infrared earth sensor from moon through medium and high orbiting satellite
  • Method for processing interference in infrared earth sensor from moon through medium and high orbiting satellite

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Embodiment Construction

[0046] Specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0047] Such as figure 1 , 2 , Shown in 3, a kind of method that the satellite of middle and high orbit disposes of moon interference infrared earth sensor, its concrete steps are as follows:

[0048] (1) Judging whether the moon will enter the field of view of the earth sensor during the process of capturing the earth according to the following two conditions:

[0049] ①θ SM >120°;②|θ SE -θ SM |

[0050] Among them, such as figure 2 As shown, θ SE is the angle between the sun-satellite-earth, θ SMis the included angle of the sun-satellite-moon, and a is the threshold value for the moon to enter the field of view in the X direction of the earth sensor (such as: a=20.17° when the earth sensor is a synchronous orbit earth sensor, and a=20.17° when the earth sensor is a middle orbit a= 24.38°);

[0051] If the above two condi...

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Abstract

The invention relates to a method for processing the interference in an infrared earth sensor from the moon through a medium and high orbiting satellite. The method comprises the following steps: calculating the orbit of the moon appearing in an earth sensor field when the earth is captured by the satellite according to the loci of the moon before or after the earth is captured, predicting the condition of the interference in all probes of the earth sensor from the moon and the attitude angle outputted by the earth sensor, remotely measuring the data in real time according to the altitude angle outputted by the earth sensor, judging whether the cause of an EP signal is the earth or the moon, choosing proper time to safely transfer the satellite to an earth pointing mode to avoid the interference from the moon in the earth sensing period. The method has the advantages that the choosing range of the satellite launching window is increased, and the operation safety of transferring the orbit of the satellite is improved.

Description

technical field [0001] The invention relates to a method for judging and processing the moon interference infrared earth sensor when a medium-high orbit satellite captures the earth, and is suitable for a medium-high orbit satellite using a single horizontal swing scanning infrared earth sensor. Background technique [0002] The single-horizon swing scanning infrared earth sensor is equipped with four scanning probes, and the positions of the probes are as follows: image 3 As shown, the four probes are sensitive to the radiation gradient between the earth and the background space in the infrared band to determine the position of the probe crossing point, and to determine the position of the center vector of the earth's disk in the satellite body coordinate system, so as to determine the satellite's rolling and Pitch attitude angle. As an optical measuring instrument, the probe of the earth sensor will inevitably be interfered by other light sources when it is working, resul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/00
Inventor 尹泉严嵘刘蕊张宇李艳华刘忠汉常建松王韬季业
Owner BEIJING INST OF CONTROL ENG
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