scholarly journals Localization of Multi-Class On-Road and Aerial Targets Using mmWave FMCW Radar

Electronics ◽  
2021 ◽  
Vol 10 (23) ◽  
pp. 2905
Author(s):  
Khushi Gupta ◽  
Soumya Joshi ◽  
M. B. Srinivas ◽  
Srinivas Boppu ◽  
M. Sabarimalai Manikandan ◽  
...  
Keyword(s):  
Traffic Control ◽  
Autonomous Systems ◽  
Vital Role ◽  
Field Of View ◽  
Monitoring Systems ◽  
Frequency Range ◽  
Angle Of Arrival ◽  
Fmcw Radar ◽  
Ground Station ◽  
Mechanical Rotation

mmWave radars play a vital role in autonomous systems, such as unmanned aerial vehicles (UAVs), unmanned surface vehicles (USVs), ground station control and monitoring systems. The challenging task when using mmWave radars is to estimate the accurate angle of arrival (AoA) of the targets, due to the limited number of receivers. In this paper, we present a novel AoA estimation technique, using mmWave FMCW radars operating in the frequency range 77–81 GHz by utilizing the mechanical rotation. Rotating the radar also increases the field of view in both azimuth and elevation. The proposed method estimates the AoA of the targets, using only a single transmitter and receiver. The measurements are carried out in a variety of practical scenarios including pedestrians, a car, and an UAV, also known as a drone. With measured data, range-angle maps are created, and morphological operators are used to estimate the AoA of the targets. We also process radar range-angle images for improved visual representation. The proposed method will be extremely beneficial for practical ground stations, traffic control and monitoring frameworks for both on-ground and airborne vehicles.

scholarly journals An Overview of Post-COVID-19 Patient’s Health Monitoring Systems

2021 ◽  
Vol 7 (10) ◽  
pp. 61-67
Author(s):  
Chirag Satapathy, Hrishikesh Gokhale, Ali Zoya Syed, Keerti Srivastava and Ruban Nersisson
Keyword(s):  
Health Monitoring ◽  
Human Life ◽  
Vital Role ◽  
Health Conditions ◽  
Smart Sensors ◽  
Monitoring Systems ◽  
Comprehensive Review ◽  
Global Pandemic ◽  
Health Monitoring Systems ◽  
Time Basis

COVID-19 is a global pandemic infecting human life. There are many patients who have recovered from this deadly virus and need to be monitored constantly even when they are at home. IoT plays a vital role in health systems that help to monitor patient’s health conditions. These healthcare frameworks consist of smart sensors to keep a track of patient’s vitals on a real-time basis. These systems will help bridge gaps between the patients and doctors during the pandemic situation. In order to make our system competitive against the already existing devices, we prepared a comprehensive review where we extensively studied other products and compared them to find what's best for the patients.

Utilization of High Resolution Integrated Indirect Inspection Survey Technologies as Part of the Direct Assessment Methodology of Ageing Non-Cathodically Protected Pipeline Network

2021 ◽  
Author(s):  
Prankush Bujarbaruah ◽  
Sukungta Monlai ◽  
Satyajit Chakrabarty ◽  
Sidhartha Gogoi ◽  
Manash Choudhury ◽  
...  
Keyword(s):  
High Resolution ◽  
Geographical Area ◽  
Vital Role ◽  
Survey Tool ◽  
Spider Web ◽  
Integrity Assessment ◽  
Direct Assessment ◽  
Ground Station ◽  
Ground Survey ◽  
Pipeline Systems

Abstract There is an old adage “if it is not broken, do not fix it” and this could be applicable for our day-to-day menial activities, but could prove fatally disastrous if followed by any pipeline owners globally. Although, pipelines are statistically the safest means of transporting hydrocarbon — the consequence to an event could be exponential, even if the probability of the event to occur is low. The magnitude of consequence only goes higher with the ever-burgeoning population. To this effect, Oil India Limited (OIL) owns an intensive network of spider-webbed carbon steel pipelines in Upper Assam, India geographical area with varying vintage. Understanding the associated risks of operating such critical pipeline systems, it was decided for the pipelines to undergo code-compliant integrity assessment. It is well known that non-CP protected pipelines are electrically continuous conductors without any insulation (isolation) joints to separate the above-ground station piping to the cross-country underground pipeline sections. With respect to this, OIL deployed a state-of-the-art integrated indirect inspection survey tool to assist in conducting Direct Assessment based integrity assessment. This paper provides an insight into such a scenario where the operator proactively employed the use of advanced high-resolution integrated survey technology to their non-cathodically protected, but coated pipeline assets. Due to the age and design of these “temporary” pipeline systems, there were no prior readily available records in terms of construction, drawings, maps, alignment sheets, operational or historical maintenance data for these pipelines. The advanced Integrated survey played a vital role in decluttering these extensively jumbled network of non-CP pipelines. Firstly, by actually locating the pipeline based on sub meter accuracy and secondly performing simultaneous above ground survey for coating assessment and susceptibility for corrosion. The adaptability of integrated survey as per given situation helped overcome the difficult pipeline route conditions and customize the assessment for these highly challenging pipelines and make ECDA feasible as per NACE SP0502 Standard Practice for this very complex spider web network of pipelines.

A Patch Antenna Design for Giga Frequency Unmanned Aerial Vehicles Application

2021 ◽  
Vol 13 (1) ◽  
pp. 01-07
Author(s):  
Dr.M.D. Javeed Ahammed ◽  
Dr.G. Srinivasa Rao
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Surface Current ◽  
Vital Role ◽  
Frequency Range ◽  
Gain Bandwidth ◽  
Proposed Model ◽  
Major Parameter ◽  
Aerospace Technology ◽  
Conventional Models

In this paper a present time developing application is used that is a UAV Antenna in aerospace technology. These antennas play a vital role in this WIMAX technology. A patch antenna is designed such that all the dimensions should be shrinked yet efficient in radiation in comb shape and this proposed antenna is used at 4.2GHz frequency range. A CST tool is used for designing and simulating our antenna all the dimensions taken for proposed antenna are comparatively less when compared to conventional models. Low return loss, gain, bandwidth and VSWR are optimized by using this design the efficiency is also enhanced by 95% which makes our antenna suitable to the UAV WIMAX applications. Surface current is also one of the major parameter which is reduced by our proposed model.

Smart Healthcare Monitoring System for War-End Soldiers Using CNN

2021 ◽  
pp. 166-199
Author(s):  
Preethi S. ◽  
Prasannadevi V. ◽  
Arunadevi B.
Keyword(s):  
Monitoring System ◽  
Health Monitoring ◽  
Military Personnel ◽  
Vital Role ◽  
Monitoring Systems ◽  
Health Issues ◽  
Smart Healthcare ◽  
Emergency Assistance ◽  
Healthcare Monitoring ◽  
Wearable Monitoring Systems

Health monitoring plays a vital role to overcome the health issues of the patients. According to research, approximately 2000 people die due to carelessness of monitoring their health. Wearable monitoring systems record the activities of daily life. A 24-hour wearable monitoring system was developed and changes were identified. This project is designed for helping the soldiers to maintain their health conditions and to identify their health issues at war's end. Different health parameters are monitored using sensors, and the data are transmitted through GSM to the receiver, and the received data are analyzed using convolutional neural networks, which is performed in cloud IoT. If any abnormalities are found during the analyzing process, the message is sent to military personnel and the doctor at the camp so that they could take necessary actions to recover the ill soldier from the war field and provide emergency assistance on time. The location of the soldier is also shared using the input from GPS modem in the smart jacket.

scholarly journals Common Data Fusion Framework: An open-source Common Data Fusion Framework for space robotics

2020 ◽  
Vol 17 (2) ◽  
pp. 172988142091176
Author(s):  
Raul Dominguez ◽  
Mark Post ◽  
Alexander Fabisch ◽  
Romain Michalec ◽  
Vincent Bissonnette ◽  
...  
Keyword(s):  
Data Fusion ◽  
Autonomous Systems ◽  
Vital Role ◽  
Sensor Data ◽  
Space Robotics ◽  
Multisensor Data Fusion ◽  
Framework Approach ◽  
The Common ◽  
Fusion Framework ◽  
Multisensor Data

Multisensor data fusion plays a vital role in providing autonomous systems with environmental information crucial for reliable functioning. In this article, we summarize the modular structure of the newly developed and released Common Data Fusion Framework and explain how it is used. Sensor data are registered and fused within the Common Data Fusion Framework to produce comprehensive 3D environment representations and pose estimations. The proposed software components to model this process in a reusable manner are presented through a complete overview of the framework, then the provided data fusion algorithms are listed, and through the case of 3D reconstruction from 2D images, the Common Data Fusion Framework approach is exemplified. The Common Data Fusion Framework has been deployed and tested in various scenarios that include robots performing operations of planetary rover exploration and tracking of orbiting satellites.

ICEBEAR: Recent Results from a Bistatic Coded Continuous-Wave E-region Coherent Scatter Radar

2020 ◽  
Author(s):  
Devin Huyghebaert ◽  
Adam Lozinsky ◽  
Glenn Hussey ◽  
Kathryn McWilliams ◽  
Draven Galeschuk ◽  
...  
Keyword(s):  
Plasma Density ◽  
Continuous Wave ◽  
Random Noise ◽  
Azimuthal Angle ◽  
Elevation Angle ◽  
Field Of View ◽  
Angle Of Arrival ◽  
Coherent Scatter ◽  
Scatter Radar ◽  
E Region

<p>The Ionospheric Continuous-wave E-region Bistatic Experimental Auroral Radar (ICEBEAR) is located in Canada and has a field of view centered at (58°N, 106°W) overlooking the terrestrial auroral zone.  This 49.5 MHz coherent scatter radar measures plasma density irregularities in the E-region ionosphere using a pseudo random noise phase modulated continuous-wave (CW) signal.  ICEBEAR uses this coded CW signal to obtain simultaneous high temporal (1 s) and spatial (1.5 km) resolutions of E-region plasma density turbulence over a 600 km x 600 km field of view, providing insights into the Farley-Buneman plasma density instability and wave-like structures evident in the coherent scatter.  The initial results from ICEBEAR were obtained with a 1D receiving array, providing azimuthal angle of arrival details of the incoming scattered signal.  This azimuthal determination, along with the range determined using the coded signal, allowed the scatter to be mapped in 2D.  A recent reconfiguration of the receiving array has allowed the elevation angle of the received signal to be calculated, providing 3D determination of the location of the plasma density irregularities.  This presentation will demonstrate the capabilities of ICEBEAR, displaying measurements of highly dynamic plasma density irregularities with wave-like behaviour on 1 second time scales.</p>

scholarly journals Multiview tiling light sheet microscopy for 3D high resolution live imaging

Development ◽  
2021 ◽  
Author(s):  
Mostafa Aakhte ◽  
H.-Arno J. Müller
Keyword(s):  
High Resolution ◽  
Myosin Ii ◽  
Resolution Enhancement ◽  
Light Sheet ◽  
Field Of View ◽  
Large Field ◽  
Axial Resolution ◽  
Light Sheet Microscopy ◽  
Drosophila Embryogenesis ◽  
Mechanical Rotation

Light sheet or selective plane illumination microscopy (SPIM) is ideally suited for in toto imaging of living specimens at high temporal-spatial resolution. In SPIM, the light scattering that occurs during imaging of opaque specimens brings about limitations in terms of resolution and the imaging field of view. To ameliorate this shortcoming, the illumination beam can be engineered into a highly confined light sheet over a large field of view and multi-view imaging can be performed by applying multiple lenses combined with mechanical rotation of the sample. Here, we present a Multiview tiling SPIM (MT-SPIM) that combines the Multi-view SPIM (M-SPIM) with a confined, multi-tiled light sheet. The MT-SPIM provides high-resolution, robust and rotation-free imaging of living specimens. We applied the MT-SPIM to image nuclei and Myosin II from the cellular to subcellular spatial scale in early Drosophila embryogenesis. We show that the MT-SPIM improves the axial-resolution relative to the conventional M-SPIM by a factor of two. We further demonstrate that this axial resolution enhancement improves the automated segmentation of Myosin II distribution and of nuclear volumes and shapes.

scholarly journals DALT: Double Anchor-Based Localization Technique For Wireless Sensor Networks Using RSS And AoA Measures

2019 ◽  
Vol 8 (10) ◽  
pp. 1862-1869
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Vital Role ◽  
Location Estimation ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Angle Of Arrival ◽  
Localization Technique ◽  
Localization Algorithms ◽  
Gps Device

Tracking the location of target nodes/objects plays a vital role in disaster management and emergency rescue operations. The wireless sensor network is an easiest and cheapest solution to track the target nodes/objects in emergency applications. Use of GPS installed devices in wireless sensor networks is one of the solutions to track the target node’s location. Installing GPS device on every target node is very expensive and the GPS device drains the battery power, and increases the size of sensor nodes. Localization is an alternative solution to track the target node’s location. Many localization algorithms are available to track/estimate the target node’s location coordinates, but the accuracy of the estimated target nodes is poor. A new localization technique is proposed in this work to improve the accuracy of the estimated location of the target nodes. The proposed technique uses two anchor nodes, and parameters like linear vector segments, received signal strength, and angle of arrival measures in the location estimation process. This work has been simulated in MATLAB. The proposed algorithm outperforms the existing localization techniques.

scholarly journals Applications of the Open-Source Hardware Arduino Platform in the Mining Industry: A Review

2020 ◽  
Vol 10 (14) ◽  
pp. 5018
Author(s):  
Sung-Min Kim ◽  
Yosoon Choi ◽  
Jangwon Suh
Keyword(s):  
Open Source ◽  
Autonomous Systems ◽  
Mining Industry ◽  
Field Tests ◽  
Cost Effective ◽  
Field Monitoring ◽  
Monitoring Systems ◽  
Geotechnical Monitoring ◽  
Wearable Systems ◽  
Open Source Hardware

In this study, applications of the Arduino platform in the mining industry were reviewed. Arduino, a representative and popular open-source hardware, can acquire information from various sensors, transmit data using communication technology, and control devices through actuators. The review was conducted by classifying previous studies into three types of Arduino applications: field monitoring systems, wearable systems, and autonomous systems. With regard to field monitoring systems, most studies in mines were classified as atmospheric or geotechnical monitoring. In wearable systems, the health status of the miner was an important consideration, in addition to the environmental conditions of the mine. Arduino can be a useful tool as an initial prototype for autonomous mine systems. Arduino has advantages in that it can be combined with various electronic products and is cost-effective. Therefore, although many studies have been conducted in the laboratory (as opposed to field tests), Arduino applications can be further expanded in the mining field in the future.

A Narrow Band Pass Filter Using Technology Surface Mount Technology on Radar Frequency Generators

2016 ◽  
Vol 3 (1) ◽  
pp. 136
Author(s):  
I Dewa Putu Hermida ◽  
Deni Permana Kurniadi ◽  
Iqbal Syamsu
Keyword(s):  
Stop Band ◽  
Band Width ◽  
Signal Frequency ◽  
Band Pass Filter ◽  
Frequency Range ◽  
Pass Filter ◽  
Fmcw Radar ◽  
Frequency Generator ◽  
Band Depth ◽  
Radar Frequency

A BPF using SMT components. A cut-off frequency on a filter under cooling below LPF which works at  freq 310 MHz, while the cut-off frequency below a filter under cooling HPF which works at freq 306 MHz, so that the width of the band This filter is a type of narrow bandwidth filter 4 MHz. An 7 poles filter order with the aim to increase the steepness of the filter is generated, using the elliptic filter family or causer. Stop band width (Fs) to filter under cooling below about 20% in the frequency range 372 MHz, with stop band depth (As) of about 55 dB, while the stop band width (Fs) to filter under cooling of about 20% in the frequency range 245 MHz, with stop band depth (As) of about 55 dB. This filter is designed to pass the signal frequency division results DRO with a CF of 9856 MHz. Using SMT components, this circuit becomes very small and compact and has a high Q. The results of the simulation are generated, then this filter can realized system FMCW radar frequency generator.

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