Lunar Brightness Temperature Map and TB Distribution Model

Lan, Ting; Cai, Zhanchuan

doi:10.1109/tgrs.2018.2850034

Cited by 13 publications

(3 citation statements)

References 41 publications

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“…MRM data include longitude, latitude, observation time, four-frequency TB data, solar incidence angle, azimuth, and data quality. After hour-angle processing, the TB values of lunar daytime and nighttime analysis are obtained [2].…”

Section: Mrm Data Processing and Tb Related Mapsmentioning

confidence: 99%

“…Additionally, the antenna footprint of CE-1 MRM covered a distance of 35 km for the 7.8, 19.35, and 37.0 GHz channels, and 50 km for the 3.0 GHz channel. In contrast, the antenna footprint of CE-2 MRM covered a reduced distance of 17.5 km for the 7.8, 19.35, and 37.0 GHz channels, and 25 km for the 3.0 GHz channel [2][3][4]. Therefore, compared to the CE-1 MRM, the CE-2 MRM achieved a more comprehensive coverage of the lunar surface, obtained a greater number of data swath trajectories, and acquired a more exhaustive set of TB data.…”

Section: Introductionmentioning

confidence: 97%

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Comparative Analysis of Diurnal Thermal Radiation Variation among Lunar Craters of Different Ages Using CE-2 MRM Data

Cai

et al. 2023

Remote Sensing

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Microwave radiometer (MRM) is one of the important payloads on the Chang’e-2 (CE-2) Lunar satellite. In the Chang’e satellite’s observation of the microwave radiation brightness temperature (TB) on the lunar surface, there are some “cold spots” of microwave thermal radiation at night containing the Jackson crater. In order to compare the diurnal radiation TB differences of “cold spots” on the lunar surface, two typical craters at similar latitudes on the northern hemisphere on the lunar farside were selected: Jackson, which represents the new craters with a large number of discrete rocks on their surfaces; and Morse, which no longer has a large number of rocks after long-term meteorite impact and lunar evolution. In this paper, the diurnal variation of CE-2 MRM data in the two craters is presented, and a comparative analysis is made with the (FeO + TiO2) abundance (FTA) obtained by Clementine UV-VIS data and the rock abundance (RA) data of LRO Diviner. We find that the variation of the "cold spots" of lunar surface thermal radiation is closely related to the RA distribution in the newly formed craters on the lunar surface, and also has a certain correlation with the FTA.

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Section: Mrm Data Processing and Tb Related Mapsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Comparative Analysis of Diurnal Thermal Radiation Variation among Lunar Craters of Different Ages Using CE-2 MRM Data

Cai

et al. 2023

Remote Sensing

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“…Present investigations into the thermal environment of the lunar surface predominantly utilize remote sensing, in-situ measurements, and numerical analysis. For instance, the Microwave Radiometer (MRM) on the Chang'E-1 (CE-1) [5], [6] and Chang'E-2 (CE-2) satellites [7], [8], as well as the Diviner onboard Lunar Reconnaissance Orbiter (LRO) [9], [10], [11], have remotely sensed the brightness temperature of the lunar surface and the optical and thermophysical properties of the lunar regolith. Direct in-situ measurements of the thermophysical and optical properties of lunar regolith and rocks, as well as lunar surface temperature, were conducted by Apollo 15 [12], [13], Apollo 17 [14], and the CE-4 mission [15].…”

mentioning

confidence: 99%

In Situ Measurements of Thermal Environment on the Moon's Surface Revealed by the Chang'E-4 And Chang'E-5 Missions

Liu,

Huang

2024

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

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The thermal environment of the lunar surface is 1 of crucial importance for the lander thermal design and the 2 interpretation of scientific data. Clarifying the radiative sources 3 and intensity on the outer surface of the lander is one of 4 the key aspects of lander thermal design. The installation of 5 temperature sensors on the body of the Chang'e-4 (CE-4) and 6 Chang'e-5 (CE-5) landers has provided valuable opportunities 7 for quantifying the influence of lunar thermal conditions on the 8 surface temperature of the lander. In this study, we established 9 a temperature model for the near-surface regolith and a heat 10 transfer model based on the observations from sensors installed 11 on the body of the lander and auxiliary pillars. By integrating 12 factors such as the density of the lunar regolith, the thermal 13 conductivity of the lunar regolith, and the relative positions of 14 the temperature measurement points to the Earth and the Sun, 15 we conducted analyses on the temperature measurement data 16 for both CE-4 and CE-5, respectively. Our results indicate that 17 during the daytime of the Moon, the temperature of the lander's 18 surface is mainly influenced by solar radiation and the infrared 19 thermal radiation from the lunar surface. During the nighttime 20 of the Moon, the heat transferred outward from the inside of 21 the lander plays a key role in the temperature of the outer 22 surface of the lander. The lunar surface thermal environment 23 significantly affects the temperatures of both the shaded and 24 sunny sides of the lander, with its influence on the shaded side 25 even surpassing that on the sunny side. The lunar surface's 26 thermal environment directly impacts the stability and reliability 27 of the electronic components within scientific payloads. Our 28 results offer dependable lunar thermal environment parameters 29 for the design of scientific instruments on future lunar landers 30 and the deployment of instruments in their designated positions.

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Cardinal MK-spline signal processing: Spatial interpolation and frequency domain filtering

Chen

Cai

2019

Information Sciences

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Lunar Brightness Temperature Map and TB Distribution Model

Cited by 13 publications

References 41 publications

Comparative Analysis of Diurnal Thermal Radiation Variation among Lunar Craters of Different Ages Using CE-2 MRM Data

Comparative Analysis of Diurnal Thermal Radiation Variation among Lunar Craters of Different Ages Using CE-2 MRM Data

In Situ Measurements of Thermal Environment on the Moon's Surface Revealed by the Chang'E-4 And Chang'E-5 Missions

Cardinal MK-spline signal processing: Spatial interpolation and frequency domain filtering

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