scholarly journals High-accuracy long-distance measurements in air with a frequency comb laser

2009 ◽  
Vol 34 (13) ◽  
pp. 1982 ◽  
Author(s):  
M. Cui ◽  
M. G. Zeitouny ◽  
N. Bhattacharya ◽  
S. A. van den Berg ◽  
H. P. Urbach ◽  
...  
Keyword(s):  
Frequency Comb ◽  
High Accuracy ◽  
Long Distance ◽  
Distance Measurements

scholarly journals High-accuracy long distance measurements with a mode-filtered frequency comb

2017 ◽  
Vol 25 (26) ◽  
pp. 32570 ◽  
Author(s):  
Adam Lešundák ◽  
Dirk Voigt ◽  
Ondrej Cip ◽  
Steven van den Berg
Keyword(s):  
Frequency Comb ◽  
High Accuracy ◽  
Long Distance ◽  
Distance Measurements

scholarly journals Mode-resolved frequency comb interferometry for high-accuracy long distance measurement

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Steven. A. van den Berg ◽  
Sjoerd van Eldik ◽  
Nandini Bhattacharya
Keyword(s):  
Frequency Comb ◽  
High Accuracy ◽  
Distance Measurement ◽  
Long Distance

Terahertz frequency comb by multifrequency-heterodyning photoconductive detection for high-accuracy, high-resolution terahertz spectroscopy

2006 ◽  
Vol 88 (24) ◽  
pp. 241104 ◽  
Author(s):  
Takeshi Yasui ◽  
Yasuhiro Kabetani ◽  
Eisuke Saneyoshi ◽  
Shuko Yokoyama ◽  
Tsutomu Araki
Keyword(s):  
High Resolution ◽  
Terahertz Spectroscopy ◽  
Frequency Comb ◽  
High Accuracy ◽  
Terahertz Frequency

Design of Temperature Monitoring System Based on MSP430

2011 ◽  
Vol 301-303 ◽  
pp. 1162-1165
Author(s):  
Fei Hu ◽  
Wen Qing Yin ◽  
Cai Rong Chen
Keyword(s):  
Monitoring System ◽  
Simple Structure ◽  
High Accuracy ◽  
Temperature Monitoring ◽  
Low Power Consumption ◽  
Key Factors ◽  
Process Data ◽  
Long Distance ◽  
Fast Acquisition ◽  
Digital Temperature Sensor

The Greenhouse Temperature Is one of the Key Factors for Controlling the Growth of Crops. Traditional Methods of Temperature Monitoring Can Not Meet the Modern Greenhouse Requirements of High Accuracy, Fast Acquisition and Response. a Greenhouse Temperature Monitoring System Based on MSP430 Was Designed. this System Uses Digital Temperature Sensor DS18B20 to Measure Temperature, MSP430 to Process Data and Transmit Data to the Host Computer through RS485 Bus, Realizing the Real-Time Detection and Long-Distance Transmission of Greenhouse Temperature. this System Has the Features of Simple Structure, Low Power Consumption, Stability and Strong Portability Etc.

Metrology for Long Distance Surveying: A Joint Attempt to Improve Traceability of Long Distance Measurements

2015 ◽  
pp. 651-656 ◽  
Author(s):  
F. Pollinger ◽  
A. Bauch ◽  
K. Meiners-Hagen ◽  
M. Astrua ◽  
M. Zucco ◽  
...  
Keyword(s):  
Long Distance ◽  
Distance Measurements

High Accuracy Distance Measurement Using Frequency Comb

2021 ◽  
Author(s):  
Dana Maklada ◽  
Yasmine Obeid-Zoabi ◽  
Alon Eilam ◽  
Michael Dikshtein
Keyword(s):  
Frequency Comb ◽  
High Accuracy ◽  
Distance Measurement

A high accuracy cavity optomechanical accelerometer with electro-optic frequency comb readout

2021 ◽  
Author(s):  
David A. Long ◽  
Benjamin J. Reschovsky ◽  
Feng Zhou ◽  
Yiliang Bao ◽  
Ramgopal Madugani ◽  
...  
Keyword(s):  
Frequency Comb ◽  
High Accuracy ◽  
Electro Optic

Telemetri Flowmeter Menggunakan RF Modul 433MHz

2017 ◽  
Vol 1 (1) ◽  
pp. 8
Author(s):  
Frima Setyawan Nur Rohman ◽  
Ahmadan Ainul Fikri ◽  
Ahmad nur Fuad ◽  
Rahmat Rohim ◽  
Rifki Firmansyah
Keyword(s):  
20Th Century ◽  
Data Transmission ◽  
High Accuracy ◽  
Water Current ◽  
Average Error ◽  
Effective Distance ◽  
Long Distance ◽  
Flow Measurements ◽  
Measuring Device ◽  
The Moment

Abstract - In the 20th century this distance is still a constraint in efforts to measure and retrieve data. In an efficiency effort, a long distance measuring device is required. One method to measure from a distance is to use the Telemetry method. Telemetry is a method for measuring a variable in which monitoring is done remotely. The use of telemetry can be used to transmit data from the flowmeter sensor to be received by the receiver. This study discusses the effect of obstacles on transmitter work to send data to the receiver and test the accuracy of the flowmeter sensor. From this study it can be concluded that the effective distance of data transmission depends on the obstacle, the farthest distance is the moment without obstacles, then decreases when there is a hitch, and will decrease again when one receiver or transmitter is placed in a closed room. And for the accuracy of the sensor, the percentage of accuracy is low at the time of the slow water current, and vice versa high accuracy is obtained when the water current is fast. Based on the research we poured in this journal, water flow measurements using RF Arduino-based 433MHz Modules can measure the flow of water at a distance of up to 35meter with an average error of only 4.1%.

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