ANALYSIS OF INTERNAL TIMINGS AND CLOCK RATES OF TERRASAR-X

被引：11

作者：

Balss, Ulrich ^{[1
]}

Breit, Helko ^{[1
]}

Fritz, Thomas ^{[1
]}

Steinbrecher, Ulrich

Gisinger, Christoph

Eineder, Michael ^{[1
]}

机构：

[1] German Aerosp Ctr, DLR, Remote Sensing Technol Inst IMF, D-82230 Oberpfaffenhofen, Germany

来源：

2014 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS) | 2014年

关键词：

Synthetic aperture radar; TerraSAR-X; precise time measurements; pixel localization accuracy; ACCURACY;

D O I：

10.1109/IGARSS.2014.6947024

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Due to the indirect measurement principle of radar on base of signal travel time, a very precise calibration of the sensor's internal clock with regard to clock rate and potential time offsets relative to the Coordinated Universal Time is an essential prerequisite for accurate pixel localization in Synthetic Aperture Radar. Giving special considerations on this aspect, we developed two algorithms that improve the already high localization accuracy of TerraSAR-X: The either one very precisely determines the true oscillator clock rate, while the other one effectively refines the accuracy of time annotation. Experimental analyses evaluate the obtained improvements in localization accuracy from both techniques.

引用

页码：2671 / 2674

页数：4

共 50 条

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