The paper considers the problem of phase unwrapping which means generating absolute phase values from noisy, modulo-2π mapped phase ‘observations’. Phase unwrapping is the central key element in any kind of interferometric application. Nearly all known phase unwrapping techniques try to unwrap the mapped phases by a sequence of differentiating, taking the principal value of the discrete derivat...

[1] Transmission fluctuations of log-amplitude and phase can be used to construct coherence functions to infer the statistical characteristics of crustal and mantle small-scale heterogeneities. Recent numerical simulations of wave propagation in random media have revealed an apparent discrepancy between simulations and theory for phase coherence functions. In this paper, we show that the report...

In this paper, properties of reflection phase in one-dimensional quaternary photonic crystals combining dispersive meta-materials and positive index materials are investigated by transfer matrix method. Two omnidirectional band gaps are located in the band structure of considered structure. However, we limit our studies to the frequency range of the second wide band gap. We observe that the val...

Phase unwrapping (PU) is a significant problem for reconstructing the deformation field during synthetic aperture radar interferometry analysis. The various 2-D PU algorithms can be divided into two categories: path-following methods and optimization-based methods. former predefine an integration path in which phase gradient integrated to obtain unwrapped results. latter are independent error c...

State-of-the-art automotive radar sensors use a Mutliple-Input Mutiple-Output (MIMO) approach to obtain better angular resolution. Time-Division Multiplexing (TDM) scheme is commonly applied realize the orthogonality in time at transmitter. Apart from its simplicity implementation, TDM has drawback of reduced maximum unambiguous Doppler proportional number transmitters. In this paper, phase dif...