Novel artificial target for optical payload performance evaluation, and manufacturing method thereof

A target and load technology, applied in the field of remote sensing, can solve problems such as poor stability, poor spectral stability, and insufficient dynamic range, and achieve the effects of increasing frequency, reducing maintenance costs, and good spectral stability

Inactive Publication Date: 2015-06-03
ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

Solve the problems of uniformity, poor stability, insufficient dynamic range and poor spectral stability in the existing technology

Method used

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  • Novel artificial target for optical payload performance evaluation, and manufacturing method thereof
  • Novel artificial target for optical payload performance evaluation, and manufacturing method thereof
  • Novel artificial target for optical payload performance evaluation, and manufacturing method thereof

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Embodiment Construction

[0031] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following in conjunction with specific examples, and with reference to the appended Figure 1 to Figure 7 , to further describe the present invention in detail. Implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values ​​may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values ​​within acceptable error margins or design constraints.

[0032] Aiming at the obvious problem of degradation of target spectral characteristics which is difficult to overcome by the traditional paint brushing process, the present invention adopts a new technology of laying natural gravel materials with good stability and good Lambertian pro...

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Abstract

The invention relates to a novel artificial target for optical payload performance evaluation, and a manufacturing method of the novel artificial target. The novel artificial target comprises a knife-edge target and a fan-shaped target which are arranged in an adjacent way, wherein the surface of the knife-edge target is in a square shape; the square shape is divided into four areas, and a shape like a Chinese character TIAN is formed on the surface of the knife-edge target; two areas of one pair of diagonal parts of the square shape are respectively a black area and a gray area, and the other two areas are white areas; the knife-edge target has the side length of 48m, and the included angle between the knife-edge and the true north direction is 5 degrees; the fan-shaped target is in a fan shape which has the total central angle of 155 degrees, the external radius of 50m and the internal radius of 2m; the fan-shaped target is formed by a plurality of small black and white fan shapes which are alternately arranged and respectively have the small arc angle of 5 degrees; the novel artificial target is formed by laying a natural gravel material. After the novel artificial target is adopted, the frequency of on-orbit calibration and performance evaluation of a satellite payload can be greatly improved; the artificial target is good in spectrum stability, and the phenomenon of rapid spectrum deterioration caused by the influence of rainwater and frost can be avoided; the novel artificial target is good in permeability, has good self-cleaning capability, and is capable of greatly lowering the maintenance cost needed by normalized operation.

Description

technical field [0001] The invention relates to the technical field of remote sensing, in particular to the design and manufacture of a novel artificial target for optical load performance evaluation. Background technique [0002] Remote sensing technology can obtain target electromagnetic radiation information in a large range and dynamically, and realize efficient cognition of the real physical attributes of ground objects. It has broad application prospects in resources, surveying and mapping, meteorology, and military reconnaissance. With the gradual development of earth observation and remote sensing technology in the direction of satisfying quantitative applications, regular and regular monitoring of the dynamic changes in the performance of satellite loads during operation, accurate detection of the degree of change, accurate discovery of the cause of the change and the formulation of targeted remedial measures have been recognized domestically. extensive attention. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/02
Inventor 李传荣马灵玲唐伶俐高彩霞李晓辉王宁胡坚窦帅刘耀开张丹丹
Owner ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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