Interferometric calibration method of multi-strip airborne InSAR data using sparse GCPs

doi:10.7523/j.issn.2095-6134.2012.3.015

›› 2012, Vol. ›› Issue (3): 377-383.DOI: 10.7523/j.issn.2095-6134.2012.3.015

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Interferometric calibration method of multi-strip airborne InSAR data using sparse GCPs

ZHANG Lin-Tao^1,2,4, HONG Jun^1,3, MING Feng^1,2, WANG Ke^1,2,4, HU Ji-Wei^1,2,4

1. Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;
2. Key Laboratory of Geo-spatial Information Processing and Application System Technology, Chinese Academy of Sciences, Beijing 100190, China;
3. National Key Laboratory of Microwave Imaging Technology, Beijing 100190, China;
4. Graduate University, Chinese Academy of Sciences, Beijing 100049, China

Received:2011-02-25 Revised:2011-04-14 Online:2012-05-15

Abstract

Abstract: Calibration of multi-strip airborne InSAR data is needed in order to generate DEMs over large areas.We propose an interferometric calibration method for multi-strip InSAR data.The method can reduce the GCP number using connected points in the overlap area between strips and is shown to be effective by the experimental simulation. The results indicate that the interferometric parameter error of each strip can be calibrated accurately with a reduced number of GCP which could reduce the difficulty of InSAR outer calibration.

Key words: InSAR, interferometric calibration, sensitivity equation, connected points, supplementary GCP

CLC Number:

TN958

ZHANG Lin-Tao, HONG Jun, MING Feng, WANG Ke, HU Ji-Wei. Interferometric calibration method of multi-strip airborne InSAR data using sparse GCPs[J]. , 2012, (3): 377-383.

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Interferometric calibration method of multi-strip airborne InSAR data using sparse GCPs

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