Version 1
: Received: 25 April 2017 / Approved: 25 April 2017 / Online: 25 April 2017 (11:19:25 CEST)
How to cite:
Deng, M.; Zhang, G.; Zhao, R.; Li, J.; Li, J. Improvement and Validation of Ranging Accuracy with YG-13A. Preprints2017, 2017040159. https://doi.org/10.20944/preprints201704.0159.v1
Deng, M.; Zhang, G.; Zhao, R.; Li, J.; Li, J. Improvement and Validation of Ranging Accuracy with YG-13A. Preprints 2017, 2017040159. https://doi.org/10.20944/preprints201704.0159.v1
Deng, M.; Zhang, G.; Zhao, R.; Li, J.; Li, J. Improvement and Validation of Ranging Accuracy with YG-13A. Preprints2017, 2017040159. https://doi.org/10.20944/preprints201704.0159.v1
APA Style
Deng, M., Zhang, G., Zhao, R., Li, J., & Li, J. (2017). Improvement and Validation of Ranging Accuracy with YG-13A. Preprints. https://doi.org/10.20944/preprints201704.0159.v1
Chicago/Turabian Style
Deng, M., Jiansong Li and Jiansong Li. 2017 "Improvement and Validation of Ranging Accuracy with YG-13A" Preprints. https://doi.org/10.20944/preprints201704.0159.v1
Abstract
YG-13A represents the highest level of Chinese SAR satellites to date. In this paper, we report on experiments conducted to improve and validate ranging accuracy with YG-13A. We analyze the error sources in the YG-13A ranging system, such as atmospheric path delay, and transceiver channel delay. A real-time atmospheric delay correction model is established to calculate the atmospheric path delay, considering the troposphere delay and ionosphere delay. Six corner reflectors (CRs) were set up to ensure the accuracy of validation methods. Pixel location accuracies of up to 0.479-m standard deviation can be achieved after a complete calibration. We further demonstrate that the adjustment of the CRs can cause a marginal loss of ranging precision. After eliminating this error, the ranging accuracy is improved to 0.237 m. For YG-13A, a single frequency GPS receiver is used and the orbital nominal accuracy is 0.3 m, which is the biggest factor restricting its ranging accuracy. Our results show that the ranging accuracy of YG-13A can achieve decimeter-level, which is lower than centimeter-level accuracy with TerraSAR-X loading a dual frequency GPS. YG-13A has great convenience in terms of access to control points and target location that does not depend on ground equipment.
Keywords
YG-13A; geometric accuracy; validation
Subject
Environmental and Earth Sciences, Space and Planetary Science
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
