Squeezed Carrier Interferogram for Wavelet Phase Recovery
نویسندگان
چکیده
منابع مشابه
SAR Interferogram Phase Filtering Using Wavelet Transform
The application of SAR Interferometry (InSAR) especially in Digital Elevation Modeling as well as deformation monitoring encounters problems due to noise in the interferogram phase. The noise is mainly caused by temporal and baseline decorrelation as well as changes in atmospheric conditions that makes the process of phase reconstruction difficult and reduces the accuracy. The quality of digita...
متن کاملMoiré interferogram phase extraction: a ridge detection algorithm for continuous wavelet transforms.
We present a procedure using continuous wavelet transforms (CWTs) to extract the phase information from moiré interferograms. The relationship between precise ridge detection of the two-dimensional CWT magnitude map and accurate phase extraction is detailed. A cost function is introduced for the adaptive selection of the ridge, and a computationally inexpensive implementation of the cost functi...
متن کاملPhase Noise Countermeasures for Synthetic Interferogram Generation
During synthetic interferogram generation (whereby a DEM and platform positions are used to calculate expected fringes), an interpolation step is necessary during the transformation from map geometry into the slant-range geometry of the radar image. Particularly in hilly terrain, assumptions made during the interpolation step can have an impact on the accuracy of the simulation. We investigate ...
متن کاملDual Tree Complex Wavelet Transform for Adaptive Interferogram Residual Reduction
A novel scheme for interferogram filtering is presented in this paper. The main concern of the proposed scheme is to lower the residues count mean while preserving the location and jump height of the lines of phase discontinuity. The real interferogram is converted to complex form by using wrapped phase values as an argument of complex exponentially, placing the data on the unit circle on the c...
متن کاملAutomatic Analysis of Photomechanics Interferogram Using Wavelet Transform
An advanced continuous wavelet transform technique has been developed to automatically analyze photomechanics interferograms. This technique utilizes all possible wavelets to match the local interferogram fringes, and it can automatically detect local fringe frequencies and orientations with high accuracies. The advanced wavelet transform technique has the capability to directly determine gradi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Optics and Applications
سال: 2012
ISSN: 2168-5053
DOI: 10.5923/j.optics.20120204.02