A Virtualization Approach to Correct Systematic Errors in Measured TDOA and FDOA for Low Orbit Dual-Satellite Positioning Systems
The low-orbit dual-satellite passive location system provides a cost-efficient and easy implementation platform, by which positions of unknown emitters on the Earth can be determined through measuring both the time and the frequency differences by two low-orbit satellites in space. However, in reali...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
|
| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2021/9631502 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832560542748770304 |
|---|---|
| author | Gang Li Min Zhou Hongwen Tang Hongbin Chen |
| author_facet | Gang Li Min Zhou Hongwen Tang Hongbin Chen |
| author_sort | Gang Li |
| collection | DOAJ |
| description | The low-orbit dual-satellite passive location system provides a cost-efficient and easy implementation platform, by which positions of unknown emitters on the Earth can be determined through measuring both the time and the frequency differences by two low-orbit satellites in space. However, in reality, this dual-satellite location system has low positioning accuracy because of the existence of systematic errors. In this paper, in order to address the problem of low positioning accuracy in low-orbit dual-satellite systems, a virtualization approach, consisting of the establishment of the virtual reference station and virtual frequency conversion, is proposed to correct systematic errors in the system. Specifically, we first analyze the coming source of systematic errors in the dual-satellite location system, and then, a virtual reference station and virtual frequency are constructed to correct errors in the measured time difference of arrival and the frequency difference of arrival, respectively. Simulation results show that systematic errors caused by the measured time difference of arrival can be significantly reduced, and the correction efficiency, defined as a ratio between remaining errors after implementing the proposed method over uncorrected ones, for the measured frequency difference of arrival, largely relies on both the virtual frequency and the transmission frequency of reference stations. |
| format | Article |
| id | doaj-art-a5f8fc0ba31a4dbc905fcfc1ffa8d563 |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-a5f8fc0ba31a4dbc905fcfc1ffa8d5632025-02-03T01:27:20ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772021-01-01202110.1155/2021/96315029631502A Virtualization Approach to Correct Systematic Errors in Measured TDOA and FDOA for Low Orbit Dual-Satellite Positioning SystemsGang Li0Min Zhou1Hongwen Tang2Hongbin Chen3Wuhan Textile University, School of Electronic and Electrical Engineering, Wuhan, Hubei 430200, ChinaSouth Sagittarius Integration Co. LTD, Wuhan, Hubei 430056, ChinaSouth-central University for Nationalities, College of Electronics and Information Engineering, Wuhan, Hubei 430072, ChinaGuilin University of Electronic Technology, Key Laboratory of Cognitive Radio and Information Processing, Guilin 541004, ChinaThe low-orbit dual-satellite passive location system provides a cost-efficient and easy implementation platform, by which positions of unknown emitters on the Earth can be determined through measuring both the time and the frequency differences by two low-orbit satellites in space. However, in reality, this dual-satellite location system has low positioning accuracy because of the existence of systematic errors. In this paper, in order to address the problem of low positioning accuracy in low-orbit dual-satellite systems, a virtualization approach, consisting of the establishment of the virtual reference station and virtual frequency conversion, is proposed to correct systematic errors in the system. Specifically, we first analyze the coming source of systematic errors in the dual-satellite location system, and then, a virtual reference station and virtual frequency are constructed to correct errors in the measured time difference of arrival and the frequency difference of arrival, respectively. Simulation results show that systematic errors caused by the measured time difference of arrival can be significantly reduced, and the correction efficiency, defined as a ratio between remaining errors after implementing the proposed method over uncorrected ones, for the measured frequency difference of arrival, largely relies on both the virtual frequency and the transmission frequency of reference stations.http://dx.doi.org/10.1155/2021/9631502 |
| spellingShingle | Gang Li Min Zhou Hongwen Tang Hongbin Chen A Virtualization Approach to Correct Systematic Errors in Measured TDOA and FDOA for Low Orbit Dual-Satellite Positioning Systems International Journal of Antennas and Propagation |
| title | A Virtualization Approach to Correct Systematic Errors in Measured TDOA and FDOA for Low Orbit Dual-Satellite Positioning Systems |
| title_full | A Virtualization Approach to Correct Systematic Errors in Measured TDOA and FDOA for Low Orbit Dual-Satellite Positioning Systems |
| title_fullStr | A Virtualization Approach to Correct Systematic Errors in Measured TDOA and FDOA for Low Orbit Dual-Satellite Positioning Systems |
| title_full_unstemmed | A Virtualization Approach to Correct Systematic Errors in Measured TDOA and FDOA for Low Orbit Dual-Satellite Positioning Systems |
| title_short | A Virtualization Approach to Correct Systematic Errors in Measured TDOA and FDOA for Low Orbit Dual-Satellite Positioning Systems |
| title_sort | virtualization approach to correct systematic errors in measured tdoa and fdoa for low orbit dual satellite positioning systems |
| url | http://dx.doi.org/10.1155/2021/9631502 |
| work_keys_str_mv | AT gangli avirtualizationapproachtocorrectsystematicerrorsinmeasuredtdoaandfdoaforloworbitdualsatellitepositioningsystems AT minzhou avirtualizationapproachtocorrectsystematicerrorsinmeasuredtdoaandfdoaforloworbitdualsatellitepositioningsystems AT hongwentang avirtualizationapproachtocorrectsystematicerrorsinmeasuredtdoaandfdoaforloworbitdualsatellitepositioningsystems AT hongbinchen avirtualizationapproachtocorrectsystematicerrorsinmeasuredtdoaandfdoaforloworbitdualsatellitepositioningsystems AT gangli virtualizationapproachtocorrectsystematicerrorsinmeasuredtdoaandfdoaforloworbitdualsatellitepositioningsystems AT minzhou virtualizationapproachtocorrectsystematicerrorsinmeasuredtdoaandfdoaforloworbitdualsatellitepositioningsystems AT hongwentang virtualizationapproachtocorrectsystematicerrorsinmeasuredtdoaandfdoaforloworbitdualsatellitepositioningsystems AT hongbinchen virtualizationapproachtocorrectsystematicerrorsinmeasuredtdoaandfdoaforloworbitdualsatellitepositioningsystems |