Research on Deep-sea In-Situ Laser Doppler Velocity Measurement System

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Keyword(s):  
Measurement System ◽  
Deep Sea ◽  
Velocity Measurement ◽  
Laser Doppler ◽  
Doppler Velocity

Study on Doppler Velocity Measurement System

2012 ◽  
Vol 562-564 ◽  
pp. 1240-1243
Author(s):  
Jian Chao Li ◽  
Jun Hong Su ◽  
Ming Gao
Keyword(s):  
Measurement System ◽  
Velocity Measurement ◽  
High Speed ◽  
Processing System ◽  
Measurement Range ◽  
High Accuracy ◽  
Laser Doppler ◽  
Doppler Velocity ◽  
Dual Frequency ◽  
Frequency Laser

In order to satisfy the high accuracy velocity measurement requirement, using the improved dual-frequency laser Doppler velocity measurement principle, designed a set of laser Doppler velocity measurement system. System consists of two parts: optical system and signal acquisition and processing system. Through the establishment of dual-frequency laser Doppler velocity measurement experimental platform for testing, the result shows that the method can be carried on the high accuracy velocity measurement which in high speed move object. Measurement range from 0.1 m/s to 50 m/s, the error is less than 2 percent and it could increase the speed measurement range.

Application of Laser Doppler Velocity in Velocity Measurement of Rainwater in Pipe

Applied laser ◽  
2012 ◽  
Vol 32 (4) ◽  
pp. 305-309
Author(s):  
王树梅 Wang Shumei ◽  
郑艳芳 Zheng Yanfang
Keyword(s):  
Velocity Measurement ◽  
Laser Doppler ◽  
Doppler Velocity

Development of a deep-sea multi-mode acoustic sediments in situ measurement system

2016 ◽  
Author(s):  
Jiuyi Yuan ◽  
Haibin Yu ◽  
Haiyu Yan ◽  
Li Xu ◽  
Guanbao Li
Keyword(s):  
Measurement System ◽  
Deep Sea ◽  
In Situ Measurement ◽  
Multi Mode

An orthogonal-beam Doppler velocity measurement system based on a single laser diode

2020 ◽  
Vol 27 (4) ◽  
pp. 375-379
Author(s):  
Wei Liu ◽  
Wendi Yan ◽  
Yuan Wang ◽  
Chunlei Jiang ◽  
Yuhan Geng ◽  
...  
Keyword(s):  
Laser Diode ◽  
Measurement System ◽  
Velocity Measurement ◽  
Doppler Velocity ◽  
Single Laser

scholarly journals Analysis and Modeling Methodologies for Heat Exchanges of Deep-Sea In Situ Spectroscopy Detection System Based on ROV

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2729 ◽  
Author(s):  
Xiaorui Liu ◽  
Fujun Qi ◽  
Wangquan Ye ◽  
Kai Cheng ◽  
Jinjia Guo ◽  
...  
Keyword(s):  
Measurement System ◽  
Deep Sea ◽  
Detection System ◽  
Stable Condition ◽  
Measurement Process ◽  
Profile Measurement ◽  
Remotely Operated Vehicle ◽  
Modeling Methodology ◽  
Heat Exchanges

In recent years, cabled ocean observation technology has been increasingly used for deep sea in situ research. As sophisticated sensor or measurement system starts to be applied on a remotely operated vehicle (ROV), it presents the requirement to maintain a stable condition of measurement system cabin. In this paper, we introduce one kind of ROV-based Raman spectroscopy measurement system (DOCARS) and discuss the development characteristics of its cabin condition during profile measurement process. An available and straightforward modeling methodology is proposed to realize predictive control for this trend. This methodology is based on the Autoregressive Exogenous (ARX) model and is optimized through a series of sea-going test data. The fitting result demonstrates that during profile measurement processes this model can availably predict the development trends of DORCAS’s cabin condition during the profile measurement process.

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