scholarly journals Methods of monitoring and control of parameters of signals and elements of the mobile communication network when solving the problem of electromagnetic compatibility

2020 ◽  
pp. 3-15
Author(s):  
Yulia Koliadenko ◽  
Mykyta Chursanov ◽  
Oleksii Koliadenko
Keyword(s):  
Mobile Communication ◽  
Electromagnetic Compatibility ◽  
Random Variables ◽  
Random Processes ◽  
Recursive Estimation ◽  
Estimation Methods ◽  
Measured Signal ◽  
Monitoring And Control ◽  
Communication Signals ◽  
And Control

To ensure the electromagnetic compatibility of mobile networks, it is necessary to monitor and control: radio frequency resource, frequency and power of signals in the allocated frequency resource, group delay time, resistance parameters to linear attenuation and attenuation associated with multi-beam signal transmission, polarization signal parameters, location (coordinates) of moving sources. The evaluation of parameters based on the results of measurements is currently carried out based on observations, and decision-making is carried out based on sample statistics. The use of methods for measuring the parameters of network elements and communication signals against the background of thermal noise is proposed. The measurement methods are based on the recursive Robbins-Monroe algorithm for estimating such parameters as random variables and the recursive Kalman-Bussey algorithm for estimating random processes. The efficiency analysis of recursive algorithms of optimal estimation of random variables and random processes is carried out. The advantage of recursive estimation methods is that, in practice, they are more effective than statistical processing methods, as they provide real-time estimation and do not require a waste of time for accumulation and processing. In addition to noise, extraneous signals are concentrated in the spectrum with the measured signal in radio communication channels. This fact determines the problem relevance of extracting from the additive mixture of signals and interference of useful signals that come from measurements. Methods for measuring the parameters of network elements and communication signals in the conditions of external signals have been developed. The possibility of using in the meters of parameters of mobile communication networks adaptive noise compensators with adaptive reference reception channel is considered, reducing the power of extraneous signals by 20 … 30 decibels and more.

Applications of GPRS in the Mine Monitoring and Control System

2010 ◽  
Vol 663-665 ◽  
pp. 1192-1195 ◽  
Author(s):  
Ji Yu An ◽  
Li Zhang ◽  
Song Bo Ma
Keyword(s):  
Control System ◽  
Mobile Communication ◽  
Data Transmission ◽  
System Structure ◽  
Monitoring And Control ◽  
Monitoring And Control System ◽  
Radio Data ◽  
The Core ◽  
And Control

With the development of GPRS technology in the field of mobile communication, GPRS has been used in the system of radio data transmission at present. This paper explores the applications of GPRS in the mine monitoring and control system. In this paper we have done three things. we talk about the core cutting and moving and the system structure. we give a plan to realize the GPRS communication.

scholarly journals Development of Integrative Methodologies for Effective Excavation Progress Monitoring

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 364
Author(s):  
Abdullah Rasul ◽  
Jaho Seo ◽  
Amir Khajepour
Keyword(s):  
Construction Industry ◽  
Progress Monitoring ◽  
Resistive Index ◽  
Volume Estimation ◽  
Estimation Methods ◽  
Monitoring And Control ◽  
Sensory Data ◽  
Geometric Space ◽  
Experimental Validations ◽  
And Control

Excavation is one of the primary projects in the construction industry. Introducing various technologies for full automation of the excavation can be a solution to improve sensing and productivity that are the ongoing issues in this area. This paper covers three aspects of effective excavation progress monitoring that include excavation volume estimation, occlusion area detection, and 5D mapping. The excavation volume estimation component enables estimating the bucket volume and ground excavation volume. To achieve mapping of the hidden or occluded ground areas, integration of proprioceptive and exteroceptive sensing data was adopted. Finally, we proposed the idea of 5D mapping that provides the info of the excavated ground in terms of geometric space and material type/properties using a 3D ground map with LiDAR intensity and a ground resistive index. Through experimental validations with a mini excavator, the accuracy of the two different volume estimation methods was compared. Finally, a reconstructed map for occlusion areas and a 5D map were created using the bucket tip’s trajectory and multiple sensory data with convolutional neural network techniques, respectively. The created 5D map would allow for the provision of extended ground information beyond a normal 3D ground map, which is indispensable to progress monitoring and control of autonomous excavation.

scholarly journals Discarding of cod in the Danish Fully Documented Fisheries trials

2015 ◽  
Vol 72 (6) ◽  
pp. 1848-1860 ◽  
Author(s):  
Clara Ulrich ◽  
Hans Jakob Olesen ◽  
Heiðrikur Bergsson ◽  
Josefine Egekvist ◽  
Kirsten Birch Håkansson ◽  
...  
Keyword(s):  
Electronic Monitoring ◽  
Estimation Methods ◽  
Management Approach ◽  
Practical Implementation ◽  
Monitoring And Control ◽  
Camera Systems ◽  
Reliable Source ◽  
Quota Management ◽  
And Control

Abstract Denmark was the first nation in Europe to promote the use of Fully Documented Fisheries (FDF) through Remote Electronic Monitoring (REM) and CCTV camera systems, with pilot schemes in place since 2008. In theory, such a scheme could supplement and even potentially replace expensive control and monitoring programmes; and when associated with a catch quota management (CQM) system, incentivize positive changes in fishing patterns in a results-based management approach. New data flows are, however, required to ensure the practical implementation of such a scheme. This paper reviews the quality of the FDF data collected during 2008–2014 and their potential in strengthening information on cod discards. The analyses demonstrate the improved reporting of discards in logbooks and overall discard reductions, but they also show that some uncertainties around the absolute estimates of discard quantities have remained. Regular validation of weight estimation methods and close collaboration between scientific monitoring and control are important to support the use of reported discards as a reliable source of information. We discuss the potential of electronic monitoring in the context of the EU landing obligation.

Computers for data, control and simulation

1988 ◽  
Vol 46 ◽  
pp. 920-921
Author(s):  
David C. Joy
Keyword(s):  
Personal Computers ◽  
Monitoring And Control ◽  
Data Logging ◽  
Data Logger ◽  
Operational Conditions ◽  
Data Control ◽  
The Many ◽  
And Control

Personal computers (PCs) are a powerful resource in the EM Laboratory, both as a means of automating the monitoring and control of microscopes, and as a tool for quantifying the interpretation of data. Not only is a PC more versatile than a piece of dedicated data logging equipment, but it is also substantially cheaper. In this tutorial the practical principles of using a PC for these types of activities will be discussed.The PC can form the basis of a system to measure, display, record and store the many parameters which characterize the operational conditions of the EM. In this mode it is operating as a data logger. The necessary first step is to find a suitable source from which to measure each of the items of interest. It is usually possible to do this without having to make permanent corrections or modifications to the EM.

The magnitude and cost of groundwater monitoring and control in agriculture.

2016 ◽  
Author(s):  
Giacomo Giannoccaro ◽  
Armando Ursitti ◽  
Maurizio Prosperi
Keyword(s):  
Groundwater Monitoring ◽  
Monitoring And Control ◽  
And Control
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