On-Orbit Calibration of the KBR Antenna Phase Center of GRACE-Type Gravity Satellites
The coordinates of the KBR (K-band ranging system) antenna phase center of GRACE-type gravity satellites in the satellite Science Reference Frame should be precisely known, and the determination accuracy should reach 0.3 mrad in the Y (pitch) and Z (yaw) directions. Due to the precision limitation o...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/14/14/3395 |
| _version_ | 1797416168400617472 |
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| author | Zhiyong Huang Shanshan Li Lingyong Huang Diao Fan |
| author_facet | Zhiyong Huang Shanshan Li Lingyong Huang Diao Fan |
| author_sort | Zhiyong Huang |
| collection | DOAJ |
| description | The coordinates of the KBR (K-band ranging system) antenna phase center of GRACE-type gravity satellites in the satellite Science Reference Frame should be precisely known, and the determination accuracy should reach 0.3 mrad in the Y (pitch) and Z (yaw) directions. Due to the precision limitation of ground measurement and the change of space environment during orbit, the KBR antenna phase center changes. In order to obtain more accurate KBR antenna phase center coordinates, it is necessary to maneuver the satellite to achieve the on-orbit calibration of the KBR antenna phase center. Based on the in-orbit calibration data of KBR of GRACE-FO satellites, a new method is proposed to estimate the antenna phase center of KBR using the inter-satellite range acceleration as the observation value. The antenna phase center of KBR is solved by the robust estimation method, and the obtained calibration results are better than 72 μm in the Y and Z directions and better than 1.3 mm in the X direction, which is 50% better than the least squares estimation algorithm. The accuracy of KBR calibration results obtained by using the data of positive maneuvers or mirror (negative) maneuvers, respectively, does not meet 0.3 mrad. It is shown that mirror maneuvers are required for KBR calibration of a GRACE-type gravity satellite to obtain antenna phase center estimation results that meet the accuracy requirements. The calibration algorithm proposed in this paper can provide reference for KBR antenna phase center calibration of Chinese GRACE-type gravity satellites. |
| first_indexed | 2024-03-09T05:59:22Z |
| format | Article |
| id | doaj.art-c0805420cea44db8855c0b3fde303db0 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-09T05:59:22Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-c0805420cea44db8855c0b3fde303db02023-12-03T12:10:59ZengMDPI AGRemote Sensing2072-42922022-07-011414339510.3390/rs14143395On-Orbit Calibration of the KBR Antenna Phase Center of GRACE-Type Gravity SatellitesZhiyong Huang0Shanshan Li1Lingyong Huang2Diao Fan3Institute of Geospatial Information, Information Engineering University, Zhengzhou 450001, ChinaInstitute of Geospatial Information, Information Engineering University, Zhengzhou 450001, ChinaState Key Laboratory of Geo-Information Engineering, Xi’an 710054, ChinaInstitute of Geospatial Information, Information Engineering University, Zhengzhou 450001, ChinaThe coordinates of the KBR (K-band ranging system) antenna phase center of GRACE-type gravity satellites in the satellite Science Reference Frame should be precisely known, and the determination accuracy should reach 0.3 mrad in the Y (pitch) and Z (yaw) directions. Due to the precision limitation of ground measurement and the change of space environment during orbit, the KBR antenna phase center changes. In order to obtain more accurate KBR antenna phase center coordinates, it is necessary to maneuver the satellite to achieve the on-orbit calibration of the KBR antenna phase center. Based on the in-orbit calibration data of KBR of GRACE-FO satellites, a new method is proposed to estimate the antenna phase center of KBR using the inter-satellite range acceleration as the observation value. The antenna phase center of KBR is solved by the robust estimation method, and the obtained calibration results are better than 72 μm in the Y and Z directions and better than 1.3 mm in the X direction, which is 50% better than the least squares estimation algorithm. The accuracy of KBR calibration results obtained by using the data of positive maneuvers or mirror (negative) maneuvers, respectively, does not meet 0.3 mrad. It is shown that mirror maneuvers are required for KBR calibration of a GRACE-type gravity satellite to obtain antenna phase center estimation results that meet the accuracy requirements. The calibration algorithm proposed in this paper can provide reference for KBR antenna phase center calibration of Chinese GRACE-type gravity satellites.https://www.mdpi.com/2072-4292/14/14/3395GRACEGRACE follow-ongravity satelliteKBR antenna phase centercalibrationM-estimation |
| spellingShingle | Zhiyong Huang Shanshan Li Lingyong Huang Diao Fan On-Orbit Calibration of the KBR Antenna Phase Center of GRACE-Type Gravity Satellites Remote Sensing GRACE GRACE follow-on gravity satellite KBR antenna phase center calibration M-estimation |
| title | On-Orbit Calibration of the KBR Antenna Phase Center of GRACE-Type Gravity Satellites |
| title_full | On-Orbit Calibration of the KBR Antenna Phase Center of GRACE-Type Gravity Satellites |
| title_fullStr | On-Orbit Calibration of the KBR Antenna Phase Center of GRACE-Type Gravity Satellites |
| title_full_unstemmed | On-Orbit Calibration of the KBR Antenna Phase Center of GRACE-Type Gravity Satellites |
| title_short | On-Orbit Calibration of the KBR Antenna Phase Center of GRACE-Type Gravity Satellites |
| title_sort | on orbit calibration of the kbr antenna phase center of grace type gravity satellites |
| topic | GRACE GRACE follow-on gravity satellite KBR antenna phase center calibration M-estimation |
| url | https://www.mdpi.com/2072-4292/14/14/3395 |
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