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The magnetic field in the sheath of monopole plasma antenna or the helix antennas has been found to have a negative impact on its general functionality. The vertical and horizontal signals at predetermined angles had been compromised by the sheath effect. It was observed that this phenomenon is almost unnoticed because magnetization has the highest magnitude when the device is switch on/off. In microscopic...
IITMSAT is a student satellite being developed with a mission to measure charged particle energies and fluxes, and to study the precipitation of these particles from the Van Allen radiation belts. The Space-based Proton Electron Energy Detector (SPEED) is the payload detector aboard IITMSAT which is designed to carry out the mission of charge particle detection and energy measurement in low earth...
In this paper we describe the design and development of the Command and Data Management System (CDMS) of the nano-satellite of IIT Madras, named IITMSAT. The CDMS module uses a 32-bit ARM microcontroller from Freescale — KL46Z256VLL4. This module is responsible for decoding the telecommands sent from the ground station, and transmits the time-stamped payload data back as telemetry packets. The SD...
The working paper explains the detailed analysis of the low-cost design and implementation of 53.0 × 41.0 mm Single Microstrip Patch Antenna (SMPA) for handheld Global Positioning System (GPS) receiver external use. A Computer Simulation Technology (CST) microwave studio technique was applied, using the dielectric of 5.0 and substrate thickness of 1.6 mm. The SMPA designed for data acquisition application...
Ultra-wideband (UWB) communication techniques are highly interesting because they seek to rearrange the huge spectrum of UWB for diverse applications. Therefore, UWB is the main technique employed in communication systems for 4G wireless networks. However, several issues in UWB technology, such as interference with various existing civil and military communication systems, require resolution. In this...
The latest 4G wireless technology, Long Term Evolution (LTE), is expected to be a promising wireless network for smart grid communications due to its high data rate and low delay. The needs of real time communications in the smart grid require reliable, confident and well tested wireless networks. Scheduling is one of the mechanisms which has a crucial role on the smart grid performance since it is...
This paper discusses the development process of a mission control station software for TiGA-U, a CubeSat bus. The software development process follows an iterative model whereby each phase in the cycle is repeated and modified according to the requirements from the stakeholders. The requirements, software architecture and design, and software testing are also presented.
The new antenna design of a multiband rectangular shape dielectric resonator antenna (DRA) which operates at around 1.8GHz (GSM1800), 2.2GHz (DVB-SH) and 2.6GHz (LTE-A) bands for wireless mobile communication handheld devices is discussed in this paper. The proposed DRA is designed with a size of 34mm × 33mm × 10mm and simulated by using the CST Microwave Software. The proposed antenna design, with...
Due to the prevailing impact of rain on microwave and millimetre wave propagation in tropical climates, fade margins derived from experimental campaigns would provide more practical estimates for planning. In this paper, the extent of work done on the experimental assessment of the attenuation induced by rain on practical earth-space links in Nigeria is presented. The cumulative rain rate distributions...
The Bentong-Raub Suture Zone (BRSZ) of peninsular Malaysia was selected as case study to evaluate the capability of the Phased Array type L-band Synthetic Aperture Radar (PALSAR) satellite remote sensing data for structural geology mapping in tropical environments. The structural elements in the BRSZ were enhanced using multi-polarization configuration of PALSAR data at a regional scale. Adaptive...
Oil spill which enter the marine environment from numerous sources is a significant pollutant that severely degrades sea ecosystem with profound and catastrophic effect. In recognition of the need for timely oil spill containment and risk mitigation, an effective tool is required to provide rapid response in oil spill disaster management. This paper is authored with the aims to provide quick grasp...
High purity germanium detector (HPGe) was employed to assess radionuclide contents of 238U, 40K and 232Th in soils obtained from Omala, Kogi State, Nigeria. The activities measured vary from 9.0 to 82.2, 12.3 to 114.86 and below detector limit (BDL) and 349.0 Bq Kg−1 in 238U, 232Th and 40K respectively. Highest activities for the three radionuclides were consistently obtained from soil samples got...
Advanced Earth observation technologies nowadays produce more variety of huge datasets. To derive timely the information from such datasets, remote sensing scientists need to be equipped with a better and powerful computing and storage platform. Cloud computing platform can be a good option, since it provides the required computing power with lowest cost on pay-as-use basis. To see which existing...
The current traditional system of paper documents adopted by Fire Department had lead to the inability of the fire fighters to locate usable and functioning hydrants in an efficient and effective manner which can jeopardize any rescue mission. Hence, there is a need to revised the Fire Department current system and develop a new system that is much more easier, portable and also time and cost effective...
Landsat Thematic Mapper and Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) satellite data were used for lithological mapping and chromite prospecting in Neyriz ophiolitic zone in the south of Iran. Image transformation techniques, namely decorrelation stretch, band ratio, principal component analysis (PCA) were applied to the datasets. The RGB decorrelated image of Landsat...
Forest height estimation is very important in order to estimate biomass or volume of the tree. Various method and technique can be used to estimate the height. However, the accuracy is a main challenge to meet the requirement. Interferometry Synthetic Aperture Radar (IFSAR) Intermap X-band is one of the technology that have potential in estimating tree height. It is an active remote sensing that penetrates...
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