Analysis of Inter-satellite Ranging Precision for Gravity Recovery
In a satellite gravimetry mission similar to GRACE, the precision of inter-satellite ranging is one of the key factors affecting the quality of gravity field recovery. In this paper, the impact of ranging precision on the accuracy of recovered geopotential coefficients is analyzed. Simulated preci...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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The Korean Space Science Society
2018-12-01
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| Series: | Journal of Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | http://janss.kr/journal/article.php?code=64507 |
| _version_ | 1797369459591086080 |
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| author | Pureum Kim Sang-Young Park Dae-Eun Kang Youngro Lee |
| author_facet | Pureum Kim Sang-Young Park Dae-Eun Kang Youngro Lee |
| author_sort | Pureum Kim |
| collection | DOAJ |
| description | In a satellite gravimetry mission similar to GRACE, the precision of inter-satellite ranging is one of the key factors affecting
the quality of gravity field recovery. In this paper, the impact of ranging precision on the accuracy of recovered geopotential
coefficients is analyzed. Simulated precise orbit determination (POD) data and inter-satellite range data of formation-flying
satellites containing white noise were generated, and geopotential coefficients were recovered from these simulated data
sets using the crude acceleration approach. The accuracy of the recovered coefficients was quantitatively compared between
data sets encompassing different ranging precisions. From this analysis, a rough prediction of the accuracy of geopotential
coefficients could be obtained from the hypothetical mission. For a given POD precision, a ranging measurement precision
that matches the POD precision was determined. Since the purpose of adopting inter-satellite ranging in a gravimetry
mission is to overcome the imprecision of determining orbits, ranging measurements should be more precise than POD. For
that reason, it can be concluded that this critical ranging precision matching the POD precision can serve as the minimum
precision requirement for an on-board ranging device. Although the result obtained herein is about a very particular case, this
methodology can also be applied in cases where different parameters are used. |
| first_indexed | 2024-03-08T17:47:09Z |
| format | Article |
| id | doaj.art-86df97fb268e4912a9db03eb9b0ddf7e |
| institution | Directory Open Access Journal |
| issn | 2093-5587 2093-1409 |
| language | English |
| last_indexed | 2024-03-08T17:47:09Z |
| publishDate | 2018-12-01 |
| publisher | The Korean Space Science Society |
| record_format | Article |
| series | Journal of Astronomy and Space Sciences |
| spelling | doaj.art-86df97fb268e4912a9db03eb9b0ddf7e2024-01-02T10:27:32ZengThe Korean Space Science SocietyJournal of Astronomy and Space Sciences2093-55872093-14092018-12-01354243252https://doi.org/10.5140/JASS.2018.35.4.243Analysis of Inter-satellite Ranging Precision for Gravity RecoveryPureum Kim0Sang-Young Park1Dae-Eun Kang2Youngro Lee3Department of Astronomy, Yonsei UniversityDepartment of Astronomy, Yonsei UniversityDepartment of Astronomy, Yonsei UniversityDepartment of Astronomy, Yonsei UniversityIn a satellite gravimetry mission similar to GRACE, the precision of inter-satellite ranging is one of the key factors affecting the quality of gravity field recovery. In this paper, the impact of ranging precision on the accuracy of recovered geopotential coefficients is analyzed. Simulated precise orbit determination (POD) data and inter-satellite range data of formation-flying satellites containing white noise were generated, and geopotential coefficients were recovered from these simulated data sets using the crude acceleration approach. The accuracy of the recovered coefficients was quantitatively compared between data sets encompassing different ranging precisions. From this analysis, a rough prediction of the accuracy of geopotential coefficients could be obtained from the hypothetical mission. For a given POD precision, a ranging measurement precision that matches the POD precision was determined. Since the purpose of adopting inter-satellite ranging in a gravimetry mission is to overcome the imprecision of determining orbits, ranging measurements should be more precise than POD. For that reason, it can be concluded that this critical ranging precision matching the POD precision can serve as the minimum precision requirement for an on-board ranging device. Although the result obtained herein is about a very particular case, this methodology can also be applied in cases where different parameters are used.http://janss.kr/journal/article.php?code=64507satellite gravimetrygravity recoveryinter-satellite rangecrude acceleration approach |
| spellingShingle | Pureum Kim Sang-Young Park Dae-Eun Kang Youngro Lee Analysis of Inter-satellite Ranging Precision for Gravity Recovery Journal of Astronomy and Space Sciences satellite gravimetry gravity recovery inter-satellite range crude acceleration approach |
| title | Analysis of Inter-satellite Ranging Precision for Gravity Recovery |
| title_full | Analysis of Inter-satellite Ranging Precision for Gravity Recovery |
| title_fullStr | Analysis of Inter-satellite Ranging Precision for Gravity Recovery |
| title_full_unstemmed | Analysis of Inter-satellite Ranging Precision for Gravity Recovery |
| title_short | Analysis of Inter-satellite Ranging Precision for Gravity Recovery |
| title_sort | analysis of inter satellite ranging precision for gravity recovery |
| topic | satellite gravimetry gravity recovery inter-satellite range crude acceleration approach |
| url | http://janss.kr/journal/article.php?code=64507 |
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