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Imaging method for moon-based optical sensor

An optical sensor and imaging method technology, applied in astronomical navigation, navigation through velocity/acceleration measurement, etc., can solve the problem of lack of moon-based optical sensor imaging method research, the lack of clear combination of global change research, and the research on the temporal and spatial characteristics of global change. Less problems, etc., to achieve the effect of a wide range of applications

Active Publication Date: 2022-03-25
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the current moon-based earth observation is mainly focused on the feasibility study stage and the design and exploration stage of the geometric model of the sun, earth and moon. There are few studies on the temporal and spatial characteristics of global changes, and the combination with global change research is not clear enough. , and there is no technical problem in the study of moon-based optical sensor imaging methods

Method used

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  • Imaging method for moon-based optical sensor
  • Imaging method for moon-based optical sensor
  • Imaging method for moon-based optical sensor

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Effect test

Embodiment 1

[0125] Set the sensor, set the input data: imaging time, image resolution.

[0126] We assume that a commonly used optical sensor, a multispectral camera, is placed on the side of the moon facing the earth. The spatial resolution of the sensor is 1° in the WGS84 coordinate system. In this way, the multispectral camera can obtain a 360*180 image. Moon-based observation images in raster format, each raster takes the latitude and longitude of the center.

[0127] We take September 08, 2016 01:00 (UTC) as an example to simulate and obtain a disk observation image. 1 continuous observation image for 24 hours in the whole day of September 08, 2016 (UTC) by scanning simulation observation. Obtain the solar and lunar altitudes for each region of the world through the altitude model.

[0128] The first step is to obtain the positions of the sun's barycenter and the moon's barycenter in the geocentric inertial coordinate system from the ephemeris data.

[0129] We obtain the position...

Embodiment 2

[0167] Set the sensor, set the input data: imaging time, image resolution.

[0168]We assume that a commonly used optical sensor, a multispectral camera, is placed on the side of the moon facing the earth. The spatial resolution of the sensor is 0.5° in the WGS84 coordinate system. In this way, the multispectral camera can obtain a 720*360 image. Moon-based observation images in raster format, each raster takes the latitude and longitude of the center.

[0169] We take July 04, 2016 01:00 (UTC) as an example to simulate and obtain a disk observation image. 1 continuous observation image for 24 hours in the whole day on July 4, 2016 (UTC) by scanning simulation observation.

[0170] Obtain the solar and lunar altitudes for each region of the world through the altitude model

[0171] The first step is to obtain the positions of the sun's barycenter and the moon's barycenter in the geocentric inertial coordinate system from the ephemeris data.

[0172] We obtain the positions ...

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Abstract

The invention discloses a moon-based optical sensor imaging method, comprising the following steps: (1) installing an optical sensor on the moon; (2) determining the imaging time, and obtaining the center of gravity of the moon and the sun at the center of gravity of the imaging time based on ephemeris data. coordinate system; (3) transform the position under the earth-centered inertial coordinate system into the position under the earth-centered earth-fixed coordinate system; (4) transform the position of the observation point i on the earth under the WGS84 coordinate system into the earth-centered earth-fixed coordinate system The position under the fixed coordinate system; (5) establish the horizontal coordinate system with the observation point i on the earth as the origin, and calculate the positions of the moon's barycenter and the sun's barycenter in the horizontal coordinate system; (6) calculate the observation point i on the earth under the horizontal coordinate system (7) Extract the area where the moon’s altitude angle and the sun’s altitude angle are both greater than 0 as the moon-based disk observation imaging area. The invention can observe large-scale instantaneous images and images with global scale changes slowly.

Description

technical field [0001] The invention relates to a moon-based optical sensor imaging method. Background technique [0002] Earth observation technology is considered to be an indispensable technology for the study of global change. With the deepening of global change research, more and more studies believe that global change science should start from the earth as a whole, and a "comprehensive and macroscopic earth observation" is needed to ensure the acquisition of earth science parameters with temporal consistency and spatial continuity ( Rosenqvist and Shimada et al., 2000). At present, observation platforms based on satellite-aviation-ground can only make short-term observations of scientific phenomena in limited areas on the earth at the same time, while the data acquisition cycle for large-scale scientific phenomenon observations is long, and it is difficult to meet the macroscopic dynamic changes on a global scale. Demand for Earth Science Phenomenon Observation (Guo ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/02G01C21/16
CPCG01C21/02G01C21/16
Inventor 李通郭华东张丽
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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