scholarly journals High-precision laser differential confocal measurement method for multi-geometric parameters of inner and outer spherical surfaces of laser fusion capsules

2020 ◽  
Vol 28 (7) ◽  
pp. 9913 ◽  
Author(s):  
Xianxian Ma ◽  
Lirong Qiu ◽  
Yun Wang ◽  
Mengshuang Lu ◽  
Weiqian Zhao
Keyword(s):  
High Precision ◽  
Measurement Method ◽  
Geometric Parameters ◽  
Laser Fusion ◽  
Spherical Surfaces

Underwater high-precision ultrasonic water level measurement method for hydraulic physical model

2020 ◽  
Vol 28 (9) ◽  
pp. 2027-2034
Author(s):  
Yue-jie SHU ◽  
◽  
Jun WU ◽  
Yuan-hang ZHOU ◽  
Yu-feng MA ◽  
...  
Keyword(s):  
Water Level ◽  
Physical Model ◽  
High Precision ◽  
Measurement Method ◽  
Level Measurement

A high-precision roll angle measurement method

Optik ◽  
2015 ◽  
Vol 126 (24) ◽  
pp. 4837-4840 ◽  
Author(s):  
Zhai Yusheng ◽  
Zhang Zhifeng ◽  
Su Yuling ◽  
Wang Xinjie ◽  
Feng Qibo
Keyword(s):  
High Precision ◽  
Measurement Method ◽  
Angle Measurement ◽  
Roll Angle

A measurement method for three-dimensional inner and outer surface profiles and spatial shell uniformity of laser fusion capsule

2021 ◽  
Vol 134 ◽  
pp. 106601
Author(s):  
Xianxian Ma ◽  
He Ni ◽  
Mengshuang Lu ◽  
Zihao Liu ◽  
Jingwen Huang ◽  
...  
Keyword(s):  
Outer Surface ◽  
Measurement Method ◽  
Three Dimensional ◽  
Laser Fusion ◽  
Surface Profiles

scholarly journals Analysis of Distributed Measurement Method for Array Antenna Position

2020 ◽  
Vol 10 (10) ◽  
pp. 3480
Author(s):  
Zhen Ma ◽  
Xiyuan Chen
Keyword(s):  
High Precision ◽  
Measurement Method ◽  
Earth Observation ◽  
Array Antenna ◽  
Observation System ◽  
Phase Center ◽  
The Earth ◽  
Earth Observation System ◽  
Distributed Measurement ◽  
Antenna Position

The measurement of the phase center of the airborne array antenna can directly affect the accuracy of the Earth observation system. However, the relationship between the relative motion of each sub-antenna cannot be accurately measured because of the adverse environment of the airborne platform. Therefore, it is necessary to find a suitable method to measure the motion parameters of distributed antennas and the phase center of each element antenna accurately in order to improve the imaging resolution of the Earth observation system. Distributed position and orientation system (POS) technology has high precision, but its measurement error will accumulate with time. So it needs to transfer and align continuously to achieve high-precision measurement. The paper introduces the distributed measurement method of measuring the array antenna position based on the combination of fiber Bragg grating (FBG) sensing technology and POS technology on the aircraft wing. The paper first introduces the technical scheme and principle, then carries out the structural design and method analysis. Next, the structural strength of the experimental model is checked and summarized.

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