scholarly journals UAVSAR observations of InSAR polarimetric phase diversity: implications for NISAR ionospheric phase estimation

2021 ◽  
Author(s):  
V. Brancato ◽  
H. Fattahi
Keyword(s):  
Phase Estimation ◽  
Phase Diversity

Coherent Optical OFDM-PON Using Phase Diversity Receiver and Phase Estimation

2013 ◽  
Vol 475-476 ◽  
pp. 1697-1700
Author(s):  
Yu Feng Shao ◽  
Jiang Jun Wang ◽  
Shi Kui Wang ◽  
Lian Dong Wang ◽  
Yin Xiang Luo ◽  
...  
Keyword(s):  
Phase Estimation ◽  
Ofdm System ◽  
Phase Diversity ◽  
Optical Ofdm ◽  
Simulation Results ◽  
Diversity Receiver ◽  
Ofdm Signals

In this paper, a novel CO-OFDM system using phase diversity receiver and phase estimating is proposed, theoretically analyzed, and demonstrated by simulation results. 10Gb/s C0-OFDM signals can travel in this system for at least 320km.

An Absolute Phase Estimation Method for Interferometry Imagery

2019 ◽  
Vol 1 (2) ◽  
pp. 14-19
Author(s):  
Sui Ping Lee ◽  
Yee Kit Chan ◽  
Tien Sze Lim
Keyword(s):  
Noise Suppression ◽  
Estimation Method ◽  
Phase Image ◽  
Phase Estimation ◽  
Phase Reconstruction ◽  
Estimation Algorithms ◽  
Absolute Phase ◽  
Filtering Rate ◽  
Interferometric Phase ◽  
Image Performance

Accurate interpretation of interferometric image requires an extremely challenging task based on actual phase reconstruction for incomplete noise observation. In spite of the establishment of comprehensive solutions, until now, a guaranteed means of solution method is yet to exist. The initially observed interferometric image is formed by 2π-periodic phase image that wrapped within (-π, π]. Such inverse problem is further corrupted by noise distortion and leads to the degradation of interferometric image. In order to overcome this, an effective algorithm that enables noise suppression and absolute phase reconstruction of interferometric phase image is proposed. The proposed method incorporates an improved order statistical filter that is able to adjust or vary on its filtering rate by adapting to phase noise level of relevant interferometric image. Performance of proposed method is evaluated and compared with other existing phase estimation algorithms. The comparison is based on a series of computer simulated and real interferometric data images. The experiment results illustrate the effectiveness and competency of the proposed method.

scholarly journals Squeezing as a resource to counteract phase diffusion in optical phase estimation

2020 ◽  
Vol 102 (6) ◽  
Author(s):  
G. Carrara ◽  
M. G. Genoni ◽  
S. Cialdi ◽  
M. G. A. Paris ◽  
S. Olivares
Keyword(s):  
Phase Estimation ◽  
Optical Phase ◽  
Phase Diffusion
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