A New Lunar DEM Based on the Calibrated Chang’E-1 Laser Altimeter Data
To improve the lunar DEM accuracy derived from CE-1 altimeter data, CE-1 laser altimeter data are calibrated in this paper. Orbit accuracy and ranging accuracy are the two most important factors to affect the application of altimeter data in the lunar topography. An empirical method is proposed to c...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Astronomy |
| Online Access: | http://dx.doi.org/10.1155/2018/5363797 |
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| author | Yong Huang Shengqi Chang Songhe Qin Peijia Li Xiaogong Hu Min Fan |
| author_facet | Yong Huang Shengqi Chang Songhe Qin Peijia Li Xiaogong Hu Min Fan |
| author_sort | Yong Huang |
| collection | DOAJ |
| description | To improve the lunar DEM accuracy derived from CE-1 altimeter data, CE-1 laser altimeter data are calibrated in this paper. Orbit accuracy and ranging accuracy are the two most important factors to affect the application of altimeter data in the lunar topography. An empirical method is proposed to calibrate CE-1 altimeter data, using gridded LOLA DEM to correct systematic errors of CE-1 altimeter data, and the systematic bias is about -139.52 m. A new lunar DEM grid model based on calibrated CE-1 altimeter data with the spatial resolution of 0.0625° × 0.0625° is obtained as well as a spherical harmonic model at 1400th order. Furthermore, the DEM accuracy is assessed through the comparison with the nearside landmarks of the Moon, and the results show that the DEM accuracy is improved from 127.3 m to 48.7 m after the calibration of laser altimeter data. |
| format | Article |
| id | doaj-art-e9d752b999b14b68949b77d8ab3cdfb3 |
| institution | OA Journals |
| issn | 1687-7969 1687-7977 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Astronomy |
| spelling | doaj-art-e9d752b999b14b68949b77d8ab3cdfb32025-08-20T02:21:54ZengWileyAdvances in Astronomy1687-79691687-79772018-01-01201810.1155/2018/53637975363797A New Lunar DEM Based on the Calibrated Chang’E-1 Laser Altimeter DataYong Huang0Shengqi Chang1Songhe Qin2Peijia Li3Xiaogong Hu4Min Fan5Key Laboratory of Planetary Sciences, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, ChinaKey Laboratory of Planetary Sciences, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, ChinaKey Laboratory of Planetary Sciences, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, ChinaKey Laboratory of Planetary Sciences, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, ChinaKey Laboratory of Planetary Sciences, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, ChinaKey Laboratory of Space Object Measurement, Beijing 100094, ChinaTo improve the lunar DEM accuracy derived from CE-1 altimeter data, CE-1 laser altimeter data are calibrated in this paper. Orbit accuracy and ranging accuracy are the two most important factors to affect the application of altimeter data in the lunar topography. An empirical method is proposed to calibrate CE-1 altimeter data, using gridded LOLA DEM to correct systematic errors of CE-1 altimeter data, and the systematic bias is about -139.52 m. A new lunar DEM grid model based on calibrated CE-1 altimeter data with the spatial resolution of 0.0625° × 0.0625° is obtained as well as a spherical harmonic model at 1400th order. Furthermore, the DEM accuracy is assessed through the comparison with the nearside landmarks of the Moon, and the results show that the DEM accuracy is improved from 127.3 m to 48.7 m after the calibration of laser altimeter data.http://dx.doi.org/10.1155/2018/5363797 |
| spellingShingle | Yong Huang Shengqi Chang Songhe Qin Peijia Li Xiaogong Hu Min Fan A New Lunar DEM Based on the Calibrated Chang’E-1 Laser Altimeter Data Advances in Astronomy |
| title | A New Lunar DEM Based on the Calibrated Chang’E-1 Laser Altimeter Data |
| title_full | A New Lunar DEM Based on the Calibrated Chang’E-1 Laser Altimeter Data |
| title_fullStr | A New Lunar DEM Based on the Calibrated Chang’E-1 Laser Altimeter Data |
| title_full_unstemmed | A New Lunar DEM Based on the Calibrated Chang’E-1 Laser Altimeter Data |
| title_short | A New Lunar DEM Based on the Calibrated Chang’E-1 Laser Altimeter Data |
| title_sort | new lunar dem based on the calibrated chang e 1 laser altimeter data |
| url | http://dx.doi.org/10.1155/2018/5363797 |
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