一种合成孔径雷达高度计定标方法

谌华; 郭伟; 杨双宝; 许可; 徐曦煜; 史灵卫; 王磊

doi:10.11999/JEIT161363

一种合成孔径雷达高度计定标方法

doi: 10.11999/JEIT161363

计量
- 文章访问数: 1494
- HTML全文浏览量: 236
- PDF下载量: 226
- 被引次数: 0
出版历程
- 收稿日期: 2016-12-13
- 修回日期: 2017-05-15
- 刊出日期: 2017-09-19

A Method of Calibration of SAR Altimeter

摘要

摘要: 合成孔径雷达高度计的关键技术特点是沿轨向的多普勒锐化和延迟距离校正技术。两者的结合使得其相对于传统雷达高度计具有沿轨向高分辨率和显著提高测高精度的优势。在2 m波高海况和2 km的地面网格下，其测高精度可以达到2 cm。为了验证合成孔径雷达高度计的测高精度，在充分研究合成孔径雷达高度计测高原理和传统雷达高度计定标方法的基础上，该文提出一种基于全球导航卫星系统(GNSS)浮标的合成孔径雷达高度计定标方法，采用时空一致性匹配和多基线联合解算方法提高海面高度测量精度，并将该方法应用于合成孔径雷达高度计首次机载试验中，通过对试验数据结果的处理分析，在验证合成孔径雷达高度计测高精度的同时，初步验证了该定标方法的可行性。
- 合成孔径雷达高度计 /
- 波束锐化 /
- 距离校正 /
- 全球导航卫星系统浮标 /
- 定标
Abstract: The key invoation technology of Synthetic Aperture Radar ALtimeter (SARAL) are Doppler-beam sharppen and delay/doppler range compensation. The combination of these two technologies makes it has high along-track resolution and high precision in height measurement. On the basis of 2 m sea wave height and 2 km ground grid, the accuracy of sea surface height measured by SARAL will reach 2 cm. In order to verify the accuracy of SARAL, based on a thorough study of the SARAL height measurement principle and traditional radar altimeter calibration method, a calibration method for SARAL based on Global Navigation Satellite System (GNSS) buoy calibration is developed. The method uses temporal and spatial consistency matching and multi- baseline joint solution to improve the accuracy of sea surface height measurement, then it is applied to the first airborne test of SARAL and the first airborne flight experiment data processing. By analyzing the results of airborne flight experiment data, at the same time of validation SARAL measurement precision, the feasibility of the SARAL calibration method is preliminarily verified.
- Synthetic Aperture Radar ALtimeter (SARAL) /
- Beam sharpen /
- Range correction /
- Global Navigation Satellite System (GNSS) buoy /
- Calibration

HTML全文

参考文献(18)

JENSEN J R and RANYE R K. Delay/Doppler radar altimeter: Better measurement precision[C]. IEEE International Geoscience and Remote Sensing Symposium, Seattle, 1998, 4: 2011-2013.

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, Barcelona, 2007: 3533-3536.

LEUSCHEN C J and RANEY R K. Initial results of data collected by the APL D2P radar altimeter overland and sea ice[J]. Johns Hopkins APL Technical Digest, 2005, 26(2): 114-122.

LENTZ H, BORISCH W, BRAUN H M, et al. An airborne radar altimeter with very high spatial resolution[C]. Proceedings of the Advanced RF Sensors for Earth Observation 2006 (ASRI), Workshop on RF and Microwave Systems, Instruments Sub-Systems, ESA7ESTEC, Noordwijk, The Netherlands, 2006: 156-164.

YANG Shuangbao. The mean echo model and data process of SAR altimeter[C]. IEEE International Geoscience and Remote Sensing Symposium, Vancouver, 2011: 2077-2080.

HALIMI A, MAILHES C, TOURNERET J, 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.

RANEY R K, SMITH W H F, and SANDWELLC T D. A high-resolution gravimetric and bathymetric mission[C]. Space 2004 Conference and Exposition, San Diego, 2004: 1525-1529.

GALIN N, WINGHAM D J, CULLEN R, et al. Calibration of the CryoSat-2 interferometer and measurement of across- track ocean slope[J]. IEEE Transactions on Geoscience and Remote Sensing, 2013, 51(1): 57-72.

HAINES B J, DESAI S D, BORN G H, et al. The harvest experiment: Calibration of the climate data record from TOPEX/POSEIDON, Jason-1 and the ocean surface topography mission[J]. Marine Geodesy, 2010, 33(S1): 91-113.

WATSON C, WHITE N, CHURCH J, et al. Absolute calibration in Bass Strait, Australia: TOPEX, Jason-1 and OSTM/Jason-2[J]. Marine Geodesy, 2011, 34(3): 242-260.

BONNEFOND P, EXERTIER P, LAURAIN O, et al. Absolute calibration of Jason -1 and Jason-2 altimeters in Corsica during the formation flight phase[J]. Marine Geodesy, 2010, 33(S1): 80-90.

MERTIKAS S, IOANNIDES R, TZIAVOS I, et al. Statistical models and latest results in the determination of the absolute bias for the radar altimeters of Jason satellites using the Gavdos facility[J]. Marine Geodesy, 2010, 33(S1): 114-149.

WINGHAM D J, PHALIPPOU L, MAVEOCORDATOS C, et al. The mean echo and echo cross product from a beamforming interferometric altimeter and their application to elevation measurement[J]. IEEE Transactions on Geoscience and Remote Sensing, 2004, 42(10): 2305-2323.

叶沛, 许可, 徐曦煜. 基于奇异谱分析的DGPS浮标海面高测量误差研究[J]. 遥感技术与应用, 2015, 30(4): 661-666. doi: 10.11873/j.issn.1004-0323.2015.40661.

YE Pei, XU Ke, and XU Xiyu. Study on denoising the instrumental errors of the sea surface heigtht series derived from buoys[J]. Remote Sensing Technology and Application, 2015, 30(4): 661-666. doi: 10.11873/j.issn.1004-0323.2015. 40661.

刘鹏, 许可, 王磊, 等. 合成孔径雷达高度计与传统高度计精度比对分析与机载试验验证[J]. 电子与信息学报, 2016, 38(10): 2495-2501. doi: 10.11999/JEIT151354.

LIU Peng, XU Ke, WANG Lei, et al. Precision comparison and airborne experiment validation between SAR altimeter and conventional altimeter[J]. Journal of Electronics Information Technology, 2016, 38(10): 2495-2501. doi: 10.11999/JEIT151354.

SHI Lingwei, XU Ke , LIU Peng, et al. Height precision of SAR altimeter and conventional radar altimeter based on flight experimental data[J]. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2016, 9(6): 2676-2686.

施引文献

资源附件(0)

访问统计