Method and device for space target attitude stability estimation based on photometric spectral features

A space target and spectral feature technology, applied in the field of space target attitude stability estimation, can solve the problems of misjudgment and low accuracy of space targets, and achieve the effect of improving timeliness

Active Publication Date: 2022-04-26
中国人民解放军32035部队
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Problems solved by technology

However, this method of relying on personal experience may cause misjudgment, and the accuracy of the stability judgment of space targets is not high

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  • Method and device for space target attitude stability estimation based on photometric spectral features
  • Method and device for space target attitude stability estimation based on photometric spectral features
  • Method and device for space target attitude stability estimation based on photometric spectral features

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Embodiment Construction

[0052] The present invention will be described in further detail with reference to the following specific examples, but the embodiment of the present invention is not limited to this.

[0053] In order to improve the accuracy and timeliness of attitude stability estimation of space targets, the embodiment of the invention provides a method and a device for estimating attitude stability of space targets based on photometric spectrum characteristics.

[0054] Firstly, the method for estimating the attitude stability of a space target based on photometric spectrum features provided by the embodiment of the invention is described in detail. See Figure 1 As shown, the method includes the following steps:

[0055] S10: Outliers are removed from the photometric data of the space target, and distance normalization is performed on the processed photometric data.

[0056] In practical application, the photometric data of the space target is usually in an observation arc (see Figure 2 ), and...

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Abstract

The invention discloses a method and device for estimating the attitude stability of a space object based on photometric spectrum features; the method includes: performing outlier processing on the photometric data of the space object, and performing distance normalization processing on the processed photometric data; The photometric data after the distance normalization process is used to fit the photometric curve with a multi-order polynomial; the trend item corresponding to the low frequency response component in the photometric data after the distance normalization process is eliminated by using the photometric curve, and after the detrended item is obtained photometric data; perform time-frequency conversion on the photometric data after the detrending item to obtain the frequency domain response of the current photometric data; according to the relationship between the peak value of the frequency domain response and the corresponding first threshold value, and / or, The attitude stability of the space target is determined by the relationship between the peak-to-average ratio of the frequency domain response and the corresponding second threshold. The invention can improve the accuracy and timeliness of space target attitude stability estimation.

Description

Technical field [0001] The invention belongs to the field of aerospace measurement and control, and particularly relates to a method and a device for estimating the attitude stability of a space target based on photometric spectrum characteristics. technical background [0002] In the field of aerospace measurement and control, the attitude of space target is of great significance to the state evaluation and fault diagnosis of space target. For example, the running attitude of most space targets is three-axis stable, while the attitude of rocket bodies and space debris tends to rotate and tumble. Therefore, the newly launched satellites and rocket bodies can be identified by distinguishing the running attitude of the targets, so that the new targets can be catalogued according to the orbit characteristics. For example, when the satellite measurement and control signal is abnormal, accurately judging the running attitude of the satellite can provide important information support f...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/24G01C21/20G01J1/00
CPCG01C21/24G01C21/20G01J1/00
Inventor 张荣之刘宏徐蓉梁华马鑫杨洋宋平宫语含刘齐
Owner 中国人民解放军32035部队
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