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Weighted Kalman filter phase unwrapping algorithm based on inSAR image

Man Yan
Lifen Wang


Puni tekst: engleski PDF 700 Kb

str. 227-231

preuzimanja: 951

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Sažetak

The Kalman filter deals simultaneously with phase unwrapping and noise elimination procedure. But the errors produced by the original radar signal and post-processing can cause phase discontinuity so that the unwrapped result is not accurate. Therefore, the weighted Kalman filter phase unwrapping algorithm based on InSAR image is proposed. Through the low-quality region where the wrapped phase is masked, the Kalman filter phase unwrapping algorithm is implemented in the high-quality region. When the high-quality region is correctly unwrapped, the weighted Kalman filter phase unwrapping algorithm is implemented in masking off the low-quality region, and as a consequence a reliable result is obtained. In this paper InSAR data is chosen for performing the experiment, and for comparison with both a network flow algorithm and a quality map guided algorithm. It is subsequently verified that the proposed algorithm is effective and reliable.

Ključne riječi

Phase unwrapping, Weighted Kalman filter, InSAR, Error propagation

Hrčak ID:

111112

URI

https://hrcak.srce.hr/111112

Posjeta: 1.147 *