Simulation and Application of Moon-Based Earth Observation Image
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摘要: 针对现有模拟系统只是定性描述月基对地观测图像的问题，提出了一种基于严格成像模型的月基对地观测图像模拟方法，建立了像点和物点之间的定量关系，并将其应用于月基对地观测几何图像和辐射能量图像的模拟中。基于长时间序列的模拟结果，进一步分析和归纳了月球特有的轨道特性对几何图像以及辐射能量图像各自属性的影响。结果表明：基于严格成像模型的月基对地观测图像模拟算法具有可行性，准确地表达了图像特性随着月球轨道特性变化而变化的规律。该方法为月基对地观测图像的应用奠定了基础，对于后续月基不同类型的传感器的参数设计具有较大的参考意义。Abstract: To solve the problem that the existing simulation system only qualitatively describes the Moon-based observational image, an image simulation method based on rigorous imaging model for Moon-based platform is proposed, and the quantitative relationship between the image point and object point is established. The method is applied to the simulation of observation geometric image and radiation energy image. Based on the long time series simulation results, the effect of lunar orbit on geometric images and radiation energy images are further analyzed and summarized. The results show that this image simulation method based on the rigorous imaging model is feasible, and accurately expresses the image characteristics changing with lunar orbit. This method lays a foundation for the application of Moon-based observational images, and has great significance for the subsequent parameter design of different types of Moon-based sensors.
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Key words:
- Moon-based platform /
- image simulation /
- rigorous imaging model
Highlights● An image simulation method for Moon-based Earth observation is proposed based on rigorous imaging model. ● Experiments of geometrical and radiation energy simulation images are carried out and analyzed according to the characteristics of lunar orbit. ● The influence of four key points of lunar orbit on the characteristics of the simulated image is analyzed. ● The method is theoretically universal for different sensors and can also be used as a reference for parameter design of different sensors. -
图 3 一年内不同时刻对应的月基几何模拟图像
Fig. 3 Geometrical images for Moon-based Earth observation corresponding to different moments in a year
图 5 4个关键位置点对应时刻的月基几何模拟图像
Fig. 5 Geometrical images for Moon-based Earth observation corresponding to four key position points of lunar orbit
图 6 一个轨道周期内不同时刻对应的月基OLR模拟图像
Fig. 6 OLR images for Moon-based Earth observation corresponding to different moments in an orbital period
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