Observation scope and spatial coverage analysis for earth observation from a Moon-based platform

Ye, Hanlin; Guo, Huadong; Liu, Guang; Ren, Yilun

doi:10.1080/01431161.2017.1395976

Cited by 38 publications

(17 citation statements)

References 27 publications

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“…The origin is defined as the center of the celestial body. The x-axis intersects the sphere at 0 • latitude and 0 • longitude, the fundamental plane is at the celestial equatorial plane and the reference system rotates with the sphere such as the Moon-Centered Moon-Fixed coordinate system (MCMF) and the international terrestrial reference system (ITRS) [36,39]. The third type is the celestial reference system.…”

Section: Transformation Between the Reference Systemsmentioning

confidence: 99%

“…In the third part, we calculated the observation angle and incident angle of each feature point, and summarized the characteristics of the angle combination. As a very important part of Moon-based geometry, the position of nadir points of the Moon and the Sun were calculated in previous studies [36,39], but it is the basis of the geometry study, and can provide some rules for the subsequent observation durations in this study. Therefore, this step is not listed in detail in this paper and the results are briefly explained here.…”

Section: Moon-based Observation Geometrymentioning

confidence: 99%

“…As shown, the blue region is the region covered by the Moon-based observations, the yellow region is the region that the Sun can illuminate, and the overlapping portion is the observable region of the Moon-based optical sensor that only considers optical observation. As we approximate sunlight as parallel light, sunlight can reach the entire hemisphere of the Earth, and we know that there is an Earth viewing angle of about one degree of the Moon-based observation [39], so the observation area is slightly smaller than the hemisphere. In Figure 3, the red area at the top is the boundary of the Arctic region, and the purple area at the bottom is the boundary of the Antarctic region; point T (X T , Y T , Z T ) is the location of the feature point on the surface; O e (X e , Y e , Z e ) is the barycenter of the Earth; O s (X s , Y s , Z s ) and O m (X m , Y m , Z m ) are the position of the solar barycenter and the position of the Moon-based observation platform, respectively; and α and β are the observation zenith angle and the solar incident angle, respectively.…”

Section: Observation Duration and Frequencymentioning

confidence: 99%

“…During 2016-2019, Ye and Guo established an improved geometric model and analyzed the coverage performance and observation duration of the Moon-based platform. Furthermore, they investigated the variation regularity of the looking vector direction and the relationship with the sensor's position, and later on proposed an ideal location for the Moon-based platform [10,[38][39][40][41][42]. The result shows that Moon-based observations have large spatial coverage advantages in the study of three-polar regions and latitude between 30 • N-80 • N or 30 • S-80 • S are the ideal locations for the Moon-based Earth observation platform [10,40].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Long-Term Moon-Based Observation Characteristics for Arctic and Antarctic

et al. 2019

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The Antarctic and Arctic have always been critical areas of earth science research and are sensitive to global climate change. Global climate change exhibits diversity characteristics on both temporal and spatial scales. Since the Moon-based earth observation platform could provide large-scale, multi-angle, and long-term measurements complementary to the satellite-based Earth observation data, it is necessary to study the observation characteristics of this new platform. With deepening understanding of Moon-based observations, we have seen its good observation ability in the middle and low latitudes of the Earth’s surface, but for polar regions, we need to further study the observation characteristics of this platform. Based on the above objectives, we used the Moon-based Earth observation geometric model to quantify the geometric relationship between the Sun, Moon, and Earth. Assuming the sensor is at the center of the nearside of the Moon, the coverage characteristics of the earth feature points are counted. The observation intervals, access frequency, and the angle information of each point during 100 years were obtained, and the variation rule was analyzed. The research showed that the lunar platform could carry out ideal observations for the polar regions. For the North and South poles, a continuous observation duration of 14.5 days could be obtained, and as the latitude decreased, the duration time was reduced to less than one day at the latitude of 65° in each hemisphere. The dominant observation time of the North Pole is concentrated from mid-March to mid-September, and for the South Pole, it is the rest of the year, and as the latitude decreases, it extends outward from both sides. The annual coverage time and frequency will change with the relationship between the Moon and the Earth. This study also proves that the Moon-based observation has multi-angle observation advantages for the Arctic and the Antarctic areas, which can help better understand large-scale geoscientific phenomena. The above findings indicate that the Moon-based observation can be applied as a new type of remote sensing technology to the observation field of the Earth’s polar regions.

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Section: Transformation Between the Reference Systemsmentioning

confidence: 99%

Section: Moon-based Observation Geometrymentioning

confidence: 99%

Section: Observation Duration and Frequencymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of Long-Term Moon-Based Observation Characteristics for Arctic and Antarctic

et al. 2019

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“…Ye et al proposed a geometric model for a Moon-based platform based on Earth orientation parameters and JPL Development Ephemeris (DE) data using a formula describing the relative position of the platform and the Earth observation target. Three key parameters, namely, the visibility of the Earth from the Moon, the nadir point, and the Earth viewing angle, are calculated using the proposed model [21]. Ding et al calculated the coverage indicators and compared these indicators for sensors on a geostationary satellite, on the Moon, and at the Earth-Sun L1 point.…”

Section: Introductionmentioning

confidence: 99%

Geometry Numerical Simulation and Analysis for Moon-Based Earth Observation

Shen

Guo

Liu

et al. 2020

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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Because of their scientific and social significance, large-scale geoscientific phenomena are attracting more and more attention. However, many existing Earth observation systems lack the ability to conduct long-term continuous observations on regional to global scales because of limitations on spatial and temporal coverage and the existence of systematic bias. The geometrical relationship between the Sun, Earth, and Moon is a precondition to understanding the Moon-based Earth observation (MEO). In this study, a geometry numerical simulation system for the MEO is developed based on Jet Propulsion Laboratory ephemerides data, time system transformations, and reference system transformations. Using this system, we study changes of Moon-based sensors (MBSs) subpoints in the year 2016 and from 1901 to 2016, the local azimuth-elevation angle of a point of interest on the Earth at different times in 2016 and throughout that year, and changes in observation duration at four different locations in 2016 and from 1901 to 2016. A nonlinear fitting method is used to analyze the periodic behavior of observation durations. Some factors influencing the MEO geometry are also analyzed, including the influence of the DE data source on MBS's position and on the azimuth-elevation angle of a point of interest on the Earth, the influence of the minimum observation elevation angle on the MBS observation extent, and the influence of the MBS location on the subpoint, azimuth-elevation angle, and observation period. The results show that Moon-based Earth observatory has specific and unique advantages in terms of observation geometry, which makes it suitable for observation of large-scale geoscientific phenomena.

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The influence of lunar surface position on irradiance of moon-based earth radiation observation

Zhang

2022

Front. Earth Sci.

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Observation scope and spatial coverage analysis for earth observation from a Moon-based platform

Cited by 38 publications

References 27 publications

Analysis of Long-Term Moon-Based Observation Characteristics for Arctic and Antarctic

Analysis of Long-Term Moon-Based Observation Characteristics for Arctic and Antarctic

Geometry Numerical Simulation and Analysis for Moon-Based Earth Observation

The influence of lunar surface position on irradiance of moon-based earth radiation observation

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