一種合成孔徑雷達高度計定標方法

諶華; 郭偉; 楊雙寶; 許可; 徐曦煜; 史靈衛(wèi); 王磊

doi:10.11999/JEIT161363

一種合成孔徑雷達高度計定標方法

doi: 10.11999/JEIT161363

計量
- 文章訪問數(shù): 1509
- HTML全文瀏覽量: 239
- PDF下載量: 228
- 被引次數(shù): 0
出版歷程
- 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: 合成孔徑雷達高度計的關(guān)鍵技術(shù)特點是沿軌向的多普勒銳化和延遲距離校正技術(shù)。兩者的結(jié)合使得其相對于傳統(tǒng)雷達高度計具有沿軌向高分辨率和顯著提高測高精度的優(yōu)勢。在2 m波高海況和2 km的地面網(wǎng)格下，其測高精度可以達到2 cm。為了驗證合成孔徑雷達高度計的測高精度，在充分研究合成孔徑雷達高度計測高原理和傳統(tǒng)雷達高度計定標方法的基礎上，該文提出一種基于全球?qū)Ш叫l(wèi)星系統(tǒng)(GNSS)浮標的合成孔徑雷達高度計定標方法，采用時空一致性匹配和多基線聯(lián)合解算方法提高海面高度測量精度，并將該方法應用于合成孔徑雷達高度計首次機載試驗中，通過對試驗數(shù)據(jù)結(jié)果的處理分析，在驗證合成孔徑雷達高度計測高精度的同時，初步驗證了該定標方法的可行性。
- 合成孔徑雷達高度計 /
- 波束銳化 /
- 距離校正 /
- 全球?qū)Ш叫l(wèi)星系統(tǒng)浮標 /
- 定標
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

參考文獻(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.

葉沛, 許可, 徐曦煜. 基于奇異譜分析的DGPS浮標海面高測量誤差研究[J]. 遙感技術(shù)與應用, 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.

劉鵬, 許可, 王磊, 等. 合成孔徑雷達高度計與傳統(tǒng)高度計精度比對分析與機載試驗驗證[J]. 電子與信息學報, 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.

相關(guān)文章

施引文獻

資源附件(0)

訪問統(tǒng)計