A Code Phase Measurement Method for Snap-Shot GNSS Receiver

2013 ◽  
pp. 641-651
Author(s):  
Bin Huang ◽  
Zheng Yao ◽  
Mingquan Lu ◽  
Zhenming Feng
Keyword(s):  
Measurement Method ◽  
Phase Measurement ◽  
Gnss Receiver

Absolute phase measurement method with few-patterns

2021 ◽  
Author(s):  
Xingyang Qi ◽  
Canlin Zhou ◽  
Yanping Ding ◽  
Shuchun Si ◽  
Hui Li
Keyword(s):  
Measurement Method ◽  
Phase Measurement ◽  
Absolute Phase

A Contrast of Generation Sinusoidal Fringe Pattern Method Based on Phase Measurement Profilometry

2009 ◽  
Vol 419-420 ◽  
pp. 145-148
Author(s):  
Wan Tao He ◽  
Wen Chao Ren ◽  
Xiang Qian Che ◽  
Shao Sheng Wang
Keyword(s):  
Quality Control ◽  
Reverse Engineering ◽  
Measurement Method ◽  
Fringe Pattern ◽  
Phase Measurement ◽  
Structured Light ◽  
Shape Measurement ◽  
3D Measurement ◽  
Measurement Systems ◽  
Experiment Verification

Optical 3D measurement systems are used in a lot of applications, for instance for quality control and reverse engineering. A structured light active optical 3D measurement method are very often based on projection sinusoidal fringe pattern on the object. The key element of such a shape measurement method is how to generate sinusoidal fringe pattern. The purpose of this paper is to review the method of generation sinusoidal fringe pattern and contrast the two chief method from the specific viewpoint based phase measurement profilmetry. Experiment verification of the performance of each generation method is provided and finally some suggestions on generation method for phase measurement profilometry applications is offered.

Laser Diode Self-Mixing Interference Based on Phase Measurement Method

2008 ◽  
Vol 381-382 ◽  
pp. 247-250
Author(s):  
Ming Wang ◽  
Dong Mei Guo
Keyword(s):  
Laser Diode ◽  
Phase Modulation ◽  
Signal Analysis ◽  
Measurement Method ◽  
Measurement Accuracy ◽  
Phase Measurement ◽  
External Cavity ◽  
Experimental System ◽  
Measurement Results ◽  
Measurement Principle

In order to improve the displacement measurement accuracy of the laser diode self-mixing interference (SMI), phase measurement method is introduced in the SMI signal analysis. In this paper, three modulation technique have been proposed: injection current modulation, external cavity length modulation and sinusoidal phase modulation. Measurement principle of the three modulation techinque are briefly explained. Design of the experimental system, measurement results of micro-displacement will be reported.

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