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Kamrul Hasan, Mohammad
- Development of a Rainfall Rate Monitoring System for Malaysia
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Authors
Affiliations
1 Electrical and Computer Engineering Department, International Islamic University Malaysia, Kuala Lumpur, MY
1 Electrical and Computer Engineering Department, International Islamic University Malaysia, Kuala Lumpur, MY
Source
Indian Journal of Science and Technology, Vol 9, No 28 (2016), Pagination:Abstract
Floods are one of the major disasters occurring all over the world, including Malaysia. It can lead to destruction of facilities, infrastructures as well as properties. Minimizing the risk of hazards and loss can be achieved by implementing several measures. Motivated from one of the biggest flood disasters ever occurred in the country, this monitoring system is developed as a means to reduce the risk of loss and damages. Monitoring rainfall rate may assist the community as it can provide early flood forecasting even though it cannot fully prevent the flood. Besides, it can give additional information on the probability of landslide occurrences. This paper presents the development of useful and reliable rainfall rate monitoring system for online hydrological stations in Kelantan. The whole processes in the development of this first prototype are conducted and performed using open-source software and tools such as Visual Basic and Quantum GIS (QGIS).Keywords
Flood, Rain Gauge, Rainfall Rate, Real-Time Monitoring.- Refining Ku-Band Rain Attenuation Prediction using Local Parameters in Tropics
Abstract Views :136 |
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Authors
Affiliations
1 Department of ECE, Stevens Institute of Technology Hoboken, New Jersey, US
2 Department of ECE, International Islamic University Malaysia, Kuala Lumpur, MY
1 Department of ECE, Stevens Institute of Technology Hoboken, New Jersey, US
2 Department of ECE, International Islamic University Malaysia, Kuala Lumpur, MY
Source
Indian Journal of Science and Technology, Vol 9, No 25 (2016), Pagination:Abstract
Background/Objectives: Researches disclosed rain attenuation prediction models offered by ITU-R severely underestimate the signal attenuation in tropical region. Improvement can be accomplished by incorporating three in-situ parameters of prediction models. Methods/Statistical Analysis: The locally derived components are rainfall rate, rain height and specific attenuation coefficients. Beacon signal data for MEASAT-I satellite were sampled for one year. Sampling time of 1 minute was chosen for rainfall rate. Both attenuation and rainfall rate were represented in terms of annual cumulative distribution. Rain height data were gathered from related researches and visually compared with radar data of 10 convective and 30 stratiform rain events. Findings: In previous works, these components were treated separately. By combining all three components, rain attenuation prediction model with distinctive accuracy can be acquired compared to the previous results. All previous and current works exhibited significant improvement from the latest ITU-R P.618 revision 12 model. The new result closely fitted in with measured attenuation which was not present in any previous work. This was shown by RMS error of 2.02 dB at availability of 99.9% to 99.999% (0.1% to 0.001% exceedance). Application/ Improvements: Accurate representation of fade margin can be included in link budget analysis by designers for satellite deployment in tropical region.Keywords
ITU-R, Ku-Band, Rain Attenuation, Satellite, Tropical.- Exploitation of Radio Direction Finder in the design of a UHF Transmitter Locator System
Abstract Views :139 |
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Authors
Affiliations
1 Department of Electrical and Computer Engineering, International Islamic University, Jalan Gombak - 53100, MY
1 Department of Electrical and Computer Engineering, International Islamic University, Jalan Gombak - 53100, MY
Source
Indian Journal of Science and Technology, Vol 9, No 25 (2016), Pagination:Abstract
This paper outlines how the direction finder technology was exploited in the design of a device; capable of locating the where about of a UHF transmitter. The value of amplitude and frequency of the signal were employed in the determination of the signal source direction. The study emphasized on the utilization of low cost components. The assembled prototype offers 22.5˚ bearing coverage. The determination of the direction was achieved by differentiating the received frequency signal involving multiple antenna arrays. Direction of transmitter was determined by making the receiver antenna arrays emulating condition of motion with the use of antenna switcher. Received signals were converted into tones where larger signal amplitude translates to louder tone. Antenna arrays were arranged in specific manner where the tone volumes were compared and the direction within 360˚ position was determined. The result suggests that the system can provide the detection coverages up to 22.5 degree which is better than the existing solutions in terms of equipment selection, cost, and coverage.Keywords
Antenna Switcher, Direction Finder Technology, Pseudo Doppler Technique, RDF.- Analyses of Cloud Characteristic during Malaysian 2014 Flood Event
Abstract Views :211 |
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Authors
Atikah Balqis Basri
1,
Ahmad Fadzil Ismail
1,
Muhamad Haziq Khairolanuar
1,
Nuurul Hudaa Mohd Sobli
1,
Khairayu Badron
1,
Mohammad Kamrul Hasan
1
Affiliations
1 Department of Electrical and Computer Engineering, Kulliyyah of Engineering, International Islamic University Malaysia (IIUM), Jln. Gombak, Selangor, MY
1 Department of Electrical and Computer Engineering, Kulliyyah of Engineering, International Islamic University Malaysia (IIUM), Jln. Gombak, Selangor, MY