A New Range Migration Correction Algorithm and Its Simulation for SAR Altimeter
Wang Lei①②③ Xu Ke①③ Shi Ling-wei①③ Yang Shuang-bao①③
①(Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, China) ②(University of Chinese Academy of Sciences, Beijing 100049, China) ③(Key Laboratory of Microwave Remote Sensing, Chinese Academy of Sciences, Beijing 100190, China)
The Range Migration Correction (RMC) is a key technique of synthetic aperture radar altimeter which is more precise than the conventional radar altimeter. Because of the satellite motion, the distance change between the satellite and the observed target will bring about some residual errors, but they are ignored in the existing RMC algorithms. In this paper, the influences of the vertical and horizontal velocities of the satellite are studied, then an RMC model is builded, and finally a new RMC algorithm which corrects not only the slant range error but also the residual errors is proposed. The simulation results show that this new algorithm can obtain more accurate outcomes.
王磊,许可,史灵卫,杨双宝. 一种消除合成孔径雷达高度计延迟校正中残余误差的新算法及仿真验证[J]. 电子与信息学报, 2015, 37(11): 2713-2718.
Wang Lei, Xu Ke, Shi Ling-wei, Yang Shuang-bao. A New Range Migration Correction Algorithm and Its Simulation for SAR Altimeter. JEIT, 2015, 37(11): 2713-2718.
Jensen J R and Raney R K. Delay/Doppler radar altimeter: better measurement precision[C]. 1998 IEEE International Geoscience and Remote Sensing Symposium Proceedings, Seattle, WA, 1998, 4: 2011-2013.
[2]
Raney R K. The delay/Doppler radar altimeter[J]. IEEE Transactions on Geoscience and Remote Sensing, 1998, 36(5): 1578-1588.
[3]
Phalippou L and Enjolras V. Re-tracking of SAR altimeter ocean power-waveforms and related accuracies of the retrieved sea surface height, significant wave height and wind speed[C]. IEEE International Geoscience and Remote Sensing Symposium Proceedings, Barcelona, 2007: 3533-3536.
[4]
Raney R K. Resolution and precision of a delay-Doppler radar altimeter[C]. IEEE Proceedings of OCEANS 2005, Washington, 2005, 3: 1989-1993.
[5]
Galin N, Wingham D J, Cullen R, et al.. Measuring the pitch of CryoSat-2 using the SAR mode of the SIRAL altimeter [J]. IEEE Geoscience and Remote Sensing Letters, 2014, 11(8): 1399-1403.
[6]
Halimi A, Mailhes C, Tourneret J Y, et al.. A semi-analytical model for Delay/Doppler altimetry and its estimation algorithm[J]. IEEE Transactions on Geoscience and Remote Sensing, 2014, 52(7): 4248-4258.
[7]
Jain M, Andersen O B, Dall J, et al.. Sea surface height determination in the Arctic using Cryosat-2 SAR data from primary peak empirical retrackers[J]. Advances in Space Research, 2015, 55(1): 40-50.
[8]
Donlon C, Berruti B, Buongiorno A, et al.. The Global Monitoring for Environment and Security (GMES) Sentinel-3 Mission[J]. Remote Sensing of Environment, 2012, 120: 37-57.
[9]
Halimi A, Mailhes C, Tourneret J Y, et al.. Including antenna mispointing in a semi-analytical model for Delay/Doppler altimetry[J]. IEEE Transactions on Geoscience and Remote Sensing, 2015, 53(2): 598-608.
[10]
Fenlglio-Marc L, Dinardo S, Scharroo R, et al.. The German Bight: a validation of CryoSat-2 altimeter data in SAR mode[J]. Advances in Space Research, 2015, 55(11): 2641-2656. [11] Halimi A, Mailhes C, Tourneret J Y, et al.. Exploiting time and frequency information for Delay/Doppler altimetry[C]. Signal Processing Conference (EUSIPCO), Lisbon, 2014: 1088-1092.
[12]
Ray C, Martin-Puig C, Clarizia M P, et al.. SAR altimeter backscattered waveform model[J]. IEEE Transactions on Geoscience and Remote Sensing, 2015, 53(2): 911-919.
[13]
D,Aria D, Guccione P, Rosich B, et al.. Delay/Doppler altimeter data processing[C]. IEEE International Geoscience and Remote Sensing Symposium, Barcelona, 2007: 137-140.
[14]
保铮, 邢孟道, 王彤. 雷达成像技术[M]. 北京: 电子工业出版社, 2005: 27-30.
Bao Zheng, Xing Meng-dao, and Wang Tong. Radar Imaging Technology[M]. Beijing: Publishing House of Electronics Industry, 2005: 27-30.
Yang Shuang-bao. Study of heigh precision SAR altimteter technology[D]. [Ph.D. dissertation], Center for Space Science and Applied Research, Chinese Academy of Sciences, 2007.
Yang Shuang-bao, Liu He-guang, and Xu Ke. The simulation of sea surface echo of synthetic aperture radar altimeter[J]. Journal of Remote Sensing, 2008, 11(4): 446-451.
[17]
Sun Yi-ping and Sweeting M. Directional wave spectrum estimation by synthetic aperture radar altimeter[C]. IEEE International Geoscience and Remote Sensing Symposium Proceedings, Honolulu, HI, 2000, 5: 2340-2342.
[18]
Donelan M A and Pierson W J. Radar scattering and equilibrium ranges in wind-generated waves with application to scatterometry[J]. Journal of Geophysical Research: Oceans, 1987, 92(C5): 4971-5029.
[19]
Yang Shuang-bao, Liu He-guang, Xu Ke, et al.. The mean echo model and data process of SAR altimeter[C]. IEEE International Geoscience and Remote Sensing Symposium Proceedings, Vancouver, BC, 2011: 2077-2080.
