2015 International Conference on Space Science and Communication (IconSpace)最新文献

{"title":"Towards operational forest monitoring using satellite Synthetic Aperture Radar","authors":"M. Williams, A. Milne, A. Mitchell","doi":"10.1109/ICONSPACE.2015.7283790","DOIUrl":"https://doi.org/10.1109/ICONSPACE.2015.7283790","url":null,"abstract":"This paper describes, and illustrates using documented applications, a general framework methodology for wide-area forest and land use mapping and change detection using Synthetic Aperture Radar (SAR) remote sensing. Consideration is given to implementation of the SAR-based methodology using both commercial and free/open-source software. Our experience shows that constructing a complete processing chain requires either a variety of expensive commercial software packages, or recourse to considerable bespoke software development, and in either case yields a fragmented solution not readily accessible to non-experts. It is argued that this poses a barrier to the uptake of satellite SAR by tropical forest countries, preventing them from exploiting a reliable and predictable source of remote sensing data suited to forest monitoring. Construction of a free software tool for use with SAR and other remotely sensed data is considered and it is argued that a single tool encompassing the complete framework methodology is both feasible and desirable.","PeriodicalId":150022,"journal":{"name":"2015 International Conference on Space Science and Communication (IconSpace)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115970920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preliminary vertical TEC prediction using neural network: Input data selection and preparation","authors":"R. M. Akir, Mardina Abdulla, K. Chellappan, A. Hasbi","doi":"10.1109/ICONSPACE.2015.7283767","DOIUrl":"https://doi.org/10.1109/ICONSPACE.2015.7283767","url":null,"abstract":"Total electron content (TEC) is a fundamental and most prevailing ionospheric parameter that leads to Global Positioning System (GPS) error source such as delays, poor signal or lost data. Neural Network (NN) based approaches has proven track record in ionospheric process modeling. In this work, a data preparation method was developed to perform neural network based on VTEC forecast over two stations in Malaysia. GPS Ionospheric Scintillation & TEC Monitor (GISTM) at UKM and LGKW became a part of the feasibility study for the development of data sets as inputs to the NN based TEC prediction model. The study period was selected based on the availability of data, which is from January 2011 to December 2012. The factors that influence VTEC performance are identified and processed accordingly, to be used as input parameter for the VTEC prediction NN model development. The selected parameters are seasonal variation, diurnal variation, and sunspot number which have similar conduct with VTEC for the selected 24 months.","PeriodicalId":150022,"journal":{"name":"2015 International Conference on Space Science and Communication (IconSpace)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125160371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Segmentation of satellite imagery based on pulse-coupled neural network","authors":"A. Qayyum, A. Malik, Muhammad Naufal Bin muhammad Saad, M. Iqbal","doi":"10.1109/ICONSPACE.2015.7283835","DOIUrl":"https://doi.org/10.1109/ICONSPACE.2015.7283835","url":null,"abstract":"Vegetation encroachment under overhead high voltage power lines and its monitoring is a challenging problem for electricity distribution companies. Blackout can occurs if proper monitoring of vegetation is not done. The uninterrupted electric power supply is vital for industries, businesses, and daily life. Therefore, it is mandatory for electricity companies to monitor the vegetation/trees near power lines to avoid the blackouts. Pulse-coupled neural network (PCNN) considered as differently from converntial neural networks used in many signal and image processing applications. The main step to develop the automatic detection of vegetation is performing an image segmentation which is normally used to identify or marking of vegetation from the acquired images. We apply PCNN for image segmentation on satellite images for vegetation monitoring purposes and compared the performance with a thresholding image segmentation method with Pulse coupled neural network. The results show that PCNN produce outperform as compared to the thresholding method in terms of detection accuracy.","PeriodicalId":150022,"journal":{"name":"2015 International Conference on Space Science and Communication (IconSpace)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126673484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Future perspectives of SAR polarimetry with applications to multi-parameter fully polarimetric POLSAR remote sensing & geophysical stress-change monitoring within the equatorial/sub-equatorial belts by implementation of equatorially orbiting POLSAR single and tandem satellite sensors — Focused on Ma","authors":"W. Boerner","doi":"10.1109/ICONSPACE.2015.7283803","DOIUrl":"https://doi.org/10.1109/ICONSPACE.2015.7283803","url":null,"abstract":"The Indonesian Islands stretch over almost four time zones along the equatorial belt in between +/- 10* latitude, and its lush vegetation along with its mineral resources are exposed to increasing natural hazards like volcano eruptions, earthquakes and seaquakes with ensuing tsunami, cyclones with devastating floods plus ruthless mineral mining and conversion of natural tropical jungles into oil-palm estates for ethanol production. Thus, disaster assessment and prevention has become an ever more pressing topic of top priority. Current ground-based disaster damage assessment methods are cumbersome and costly due to sudden sporadic hazard occurrences; and local point measurements are not representative of larger affected regions. Due to the strong spatial and temporal dynamics of geo/bio-environmental constituents enhanced by distinct local weather conditions, frequent continual observations are necessary for which microwave satellite remote sensing and stress change monitoring provide the sought for repetitive monitoring capability and synoptic coverage subject to equatorially orbiting POL-SAR satellite implementation.","PeriodicalId":150022,"journal":{"name":"2015 International Conference on Space Science and Communication (IconSpace)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115742545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of command and Data Management System for IITMSAT","authors":"S. Suresh, C. S. Dommeti, K. S. Green Rosh, K. G. Gopa Kumar, V. Chaitanya, A. Gulati, N. Chandrachoodan, H. Ramachandran, D. Koilpillai","doi":"10.1109/ICONSPACE.2015.7283815","DOIUrl":"https://doi.org/10.1109/ICONSPACE.2015.7283815","url":null,"abstract":"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 card on the CDMS board stores the satellite's health and science data as and when it is acquired in the orbit. The data is transmitted to the ground station (GS) during the satellite's visibility period. The interface board (I/F) links the Flight Computer module and CDMS board along with other electronics onboard. Throughout the design phase, the cost was kept as low as possible, without compromising on performance of the system. Custom-designed protocol and data frame format for communication between the satellite and ground station was completely developed from scratch, based on CCSDS cubesat standards.","PeriodicalId":150022,"journal":{"name":"2015 International Conference on Space Science and Communication (IconSpace)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130228465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the trade-off between Global Positioning System (GPS) accuracy and power saving from reduction of number of GPS receiver channels","authors":"Dinesh Sathyamorthy, Shalini Shafii, Zainal Fitry M. Amin, Asmariah Jusoh, Siti Zainun Ali","doi":"10.1109/ICONSPACE.2015.7283792","DOIUrl":"https://doi.org/10.1109/ICONSPACE.2015.7283792","url":null,"abstract":"This study is aimed at evaluating the trade-off between Global Positioning System (GPS) accuracy and power saving from reduction of number of channels. The study is conducted for number of GPS receiver channels of 4 to 12 for two scenarios: 1) Normal scenario with full range of available GPS satellites; 2) Obstruction scenario with GPS satellite elevation cutoff of 20°. It is observed that increase of power saving from reducing the number of channels causes increase of probable error values, due to increasing position dilution of precision (PDOP) of the reducing number of GPS satellites tracked. However, reduction of number of channels to match the number of available GPS satellites does not cause degradation of accuracy, as there is no reduction in number of trackable GPS satellites. For the obstruction scenario, with significantly fewer available GPS satellites due to the GPS satellite elevation cutoff, significant power saving can be achieved without degradation of accuracy. An effective power saving system would require the management of minimum number of channels required to achieve the user's minimum required accuracy.","PeriodicalId":150022,"journal":{"name":"2015 International Conference on Space Science and Communication (IconSpace)","volume":"348 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124288683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aerosol Optical Depth (AOD) retrieval method using MODIS","authors":"Khairunnisa Abd Jalal, A. Asmat, N. Ahmad","doi":"10.1109/ICONSPACE.2015.7283802","DOIUrl":"https://doi.org/10.1109/ICONSPACE.2015.7283802","url":null,"abstract":"Difficulties on the estimating of aerosol radiative forcing is due to lack of knowledge on the microphysical and aerosol optical properties and their extreme variations of spatial distribution. In understanding the dynamics of aerosols and the associated influence on global climatic conditions one of the critical parameter used is Aerosol Optical Depth (AOD). AOD acts as a good indicator due to strong correlation between small particle concentrations and light extinction coefficients. Daily AERONET Level 2 data provides AOD at 500nm however the data is very limited to a smaller scale only. To overcome this problem, MODIS data is used to provide daily AOD at 550nm data over relatively larger spatial at 10km twice a day. The aim of this study is to retrieve AOD value from MODIS satellite data and to compare and validate the AOD value using AERONET Sunphotometer. Comparison and validation of MODIS data using different instruments are required for the long term monitoring and accuracy improvement. The usual methodology for retrieval of AOD was used which is multi regression plane technique with mean and standard deviation. However, in this study some of the improvement was done by using multi regression plane technique with relative percentage error. The interpolation technique was used to derive AOD from AERONET and the statistical parameters and correlation coefficient (R2) are compared. From the result, MODIS is found to overestimate the AOD during the study period compared to AOD derived from AERONET. The correlation between extracted AOD from MODIS and AERONET using mean and standard deviation gave the R2 at 0.9033 while R2 for relative percentage error is 0.9422. Thus, from the comparison shows the importance of modifying the existing technique for the retrieval of AOD to reduce the error and uncertainties during the application of the parameter into radiative transfer model.","PeriodicalId":150022,"journal":{"name":"2015 International Conference on Space Science and Communication (IconSpace)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131274551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of very low frequency (VLF) data acquisition system using Raspberry Pi","authors":"Y. L. Soon, K. B. Gan, M. Abdullah","doi":"10.1109/ICONSPACE.2015.7283807","DOIUrl":"https://doi.org/10.1109/ICONSPACE.2015.7283807","url":null,"abstract":"Space weather is an important area of research. The Space Weather Monitor program was introduced by Stanford SOLAR Center with the aim of building and distributing inexpensive ionospheric monitors (SID). These are used to detect changes to the Earth's ionosphere which are caused by solar flares and other ionospheric disturbances that might affect very low frequency (VLF) radio propagation. SuperSID that has been developed by Stanford SOLAR Center for SID detection is a low cost but sensitive space weather monitor which is currently being used around the world. Since 2010, UKM has participated in the “International Space Weather Initiative (ISWI)” and this program has given positive impact and triggered Malaysian students' interest in space science at the secondary school level. In 2012, researchers at University Kebangsaan Malaysia (UKM) succeeded in building their own VLF receiver system, known as the UKM-SuperSID for SID detection, effectiveness determination and development of a teaching kit for SuperSID Introductory Project. However, for both systems, a desktop PC is needed in the existing system to run the SID program and to save the data for further analysis. Thus, power consumption, cost and size of the computer are becoming limiting factors for educators in Malaysia who wish to attract the interest of the young students in Science, Technology, Engineering & Mathematics (STEM) education. This is mainly because the UKM-SID system currently comprises of a loop antenna, preamplifier, sound card and a computer where the computer is required to capture, analyze and save the data, making it difficult to bring it to schools and the community. To overcome this problem, a portable VLF data acquisition system using Raspberry Pi was proposed to detect SID in this study. This system consists of a VLF receiver, preamplifier, analog to digital converter (ADC) and Raspberry Pi. The acquisition software was compiled with Python and run in the Linux environment. As a result, a portable VLF acquisition system using Raspberry Pi has been successfully developed which is able to detect and monitor frequencies transmitted from FTA (16.8 kHz), France and NWC (19.8 kHz), Australia.","PeriodicalId":150022,"journal":{"name":"2015 International Conference on Space Science and Communication (IconSpace)","volume":"194 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131668483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A mathematical model for improving the mechanism of satellite antenna","authors":"M. Emetere, D. De, T. Omotosho, M. Bakeko","doi":"10.1109/ICONSPACE.2015.7283821","DOIUrl":"https://doi.org/10.1109/ICONSPACE.2015.7283821","url":null,"abstract":"The functionality of any type of antenna could be traced to the Maxwell's electromagnetic field equations. However, salient operational problems of antennas are traced back to the Maxwell's. The inclusion of the effects of particulate to either transmission or reception unit of antenna is paramount. The Schrodinger was used to model a now reformed Maxwell's equation which explains in details the electrostatic and induced magnetic field of either transmitting or receiving antenna. This theory applies to only to stationary satellite antennas.","PeriodicalId":150022,"journal":{"name":"2015 International Conference on Space Science and Communication (IconSpace)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123567904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination the impact of sea level rise to shoreline changes using GIS","authors":"K. N. A. Maulud, Roshana Mat Rafar","doi":"10.1109/ICONSPACE.2015.7283798","DOIUrl":"https://doi.org/10.1109/ICONSPACE.2015.7283798","url":null,"abstract":"Climate change, weather and the ozone depletion has a significant association with the sea level rise and the movement of sea water. While the behavior of the sea level rise affects the changes of shoreline through processes of accretion and erosion can be analyzed in a Geographic Information System (GIS) by measuring differences in past and present shoreline locations. In this study, ArcGIS and MIKE21 software is used to generate spatial model to identify the shoreline changes at Batu Pahat and projection the sea level rise of year 2020 and 2040, thus able to identify areas that will be flooded based on the predicted sea level rise data. Based on topographic maps and satellite imagery, changes can be seen from 1984 up to 2013. Forecasting the coastal changes according to the projected sea-level rise up to 2020 and 2040 was able to provide warnings and guidance in planning all local activities. The impact of continuous sea level rise causing shoreline erosion and saltwater intrusion in agriculture area and destroying coconut plantation near Padang Terbang and shrinking mainland at Sungai Lurus. Total eroded area is 415.47 hectare and total accretion is 68.52 hectare. Accretion occurred due to deposition of sediment that is caused by longshore sediment transport or from the critical erosion area. The impacted area from sea level rise predictions is Sungai Ayam, Sungai Suloh Besar, Sungai Koris, Sungai Lurus, Sungai Senggarang, Sungai Parit Botak, Sungai Tongkang and Sungai Rengit.","PeriodicalId":150022,"journal":{"name":"2015 International Conference on Space Science and Communication (IconSpace)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125509220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}