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PRECISE 2-D AND 3-D GROUND TARGET LOCALIZATION WITH TERRASAR-X
Synthetic Aperture Radar Imaging Geodesy Signal Path Delays Geodynamic Effects Pixel Localization Accuracy Stereo SAR
2013/4/30
Previous studies have demonstrated the unprecedented absolute pixel localization accuracy of the German SAR (Synthetic Aperture Radar) satellites TerraSAR-X and TanDEM-X. Now, using global navigation ...
A Magnetically Levitated Precise Pointing Mechanism for Application to Optical Communication Terminals
Optical Communications Magnetic Levitation Control Pointing Active Anti-Vibration
2012/6/28
Increasing data bandwidth requirements from spacecraft systems is beginning to pressure existing microwave communications systems. Free-Space optical communications allows for larger bandwidths for lo...
Precise,Robust and Least Complexity CD estimation
Precise Robust Least Complexity CD estimation
2011/5/15
We demonstrate robust and precise frequency domain chromatic dispersion estimation based on offline data and simulations. The blind, least complexity algorithm allows fast acquisition suitable for dig...
A Novel Method for Precise Symbol Synchronization in Double-Side Band Optical Fast OFDM
Novel Method OFDM Symbol Synchronization
2011/5/15
We propose a novel method to achieve precise symbol synchronization using one training symbol in DSB optical fast OFDM (FOFDM). World-first FOFDM transmission experiment using field-installed fiber ve...
Precise Spectral and Impulse Response Characterization of Broadband Super Structured FBGs by Multi-Scan OSSB
Precise Spectral Impulse Response Characterization FBGs Multi-Scan OSSB
2011/5/15
We demonstrate a broadband optical single side band (OSSB) measurement by merging multiple RF scans. We provide a chip by chip optical phase measurements on a Super Structured FBG designed for Coheren...
Precise Low-Cost Optical Time Multiplexer based on the Birefringence of Polarization Maintaining Fibers
Optical Time Multiplexer Birefringence Polarization Maintaining Fibers
2009/7/16
A novel scheme of optical time multiplexer is presented, based on the high birefringence of polarization maintaining fiber. The scheme is highly precise, and its fiber-only construction reduces the mu...
Precise Beam Shaping of Diode Laser —Direct Application of LD Light for Material Processing—
Laser diode, Collimator lens Wavefront distortion Laser ablative shaping
2009/6/10
Current techniques developed for beam shaping of multi-mode laser diode (LD) output are reviewed and a new approach for the direct micro-processing with a single-mode LD is reported. The advantage of ...
Frequency-Shifted-Feedback Laser for Precise Remote 3D Measurement for Industry Applications
FSF laser Chirp frequency Optical comb
2009/6/1
A frequency-shifted feedback laser (FSFL), which generates a comb of chirped frequency components, has the ability for long distance and high accuracy optical ranging. In this report, the principles a...
Precise Time Distribution using Ethernet Passive Optical Networ
Time Distribution Ethernet Passive Optical Networ
2008/8/3
We propose a simple and precise time distribution technique utilizing multipoint control protocol in EPON, and also experimentally demonstrate time transfer within ± 100ns and frequency synchronizatio...
Precise Analysis of Transmission Impairments of Pol-Mux 110Gb/s RZ-DQPSK with Automatic Pol-Dmux using Straight 2,000-km SMF Line
Transmission Impairments Automatic Pol-Dmux
2008/7/31
Transmission of Pol-Mux 110Gb/s RZ-DQPSK signal with automatic Pol-Dmux at receiver over straight 2,000-km SMF line with +3dBm/ch shows that the performance is mainly governed by OSNR and PMD.