Details

Autor(en) / Beteiligte

• Yongfei Mao
• Maosheng Xiang
• Lideng Wei
• Daojing Li

Titel

A weighted calibration method of interferometric SAR data

Ist Teil von

• 2011 IEEE International Geoscience and Remote Sensing Symposium, 2011, p.2555-2557

Ort / Verlag

IEEE

Erscheinungsjahr

2011

Quelle

IEL

Beschreibungen/Notizen

• The accuracy of the digital elevation model (DEM) generated by the interferometric synthetic aperture radar (SAR) partly depends on the accuracy of system parameters, so it is necessary to calibrate the system parameters. The traditional calibration method models the elevation error as a linear function of parameter biases, and solves the biases through the sensitivity equations. This paper presents a weighted calibration method applicable to interferometric SAR data. It introduces the weightings to the sensitivity equations to discriminate the ground control points (GCPs) with different correlation coefficients and locations. This weighted calibration method can improve the DEM accuracy, and this paper illustrates its successful application to airborne interferometric SAR data collected by Institute of Electronics, Chinese Academy of Sciences.