2021 7th International Conference on Space Science and Communication (IconSpace)最新文献_第2页

Leatherback turtle conservation and monitoring efforts at the crossroads: A remote sensing perspective 十字路口的棱皮龟保护和监测工作:遥感视角

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768727

M. Mohan, W. Doaemo, R. F. Tapilatu, W. S. W. Mohd Jaafar, E. Adrah, G. Gopan, E. Broadbent, A. Shapiro, S. Sasmito, Shruthi Srinivasan, M. Ranagalage, M. Varela, Emma Llewelyn, Frank Asok, L. Huo, C. A. Silva, Ana Paula Dalla Corte, A. Cardil, R. Leite

{"title":"Leatherback turtle conservation and monitoring efforts at the crossroads: A remote sensing perspective","authors":"M. Mohan, W. Doaemo, R. F. Tapilatu, W. S. W. Mohd Jaafar, E. Adrah, G. Gopan, E. Broadbent, A. Shapiro, S. Sasmito, Shruthi Srinivasan, M. Ranagalage, M. Varela, Emma Llewelyn, Frank Asok, L. Huo, C. A. Silva, Ana Paula Dalla Corte, A. Cardil, R. Leite","doi":"10.1109/iconspace53224.2021.9768727","DOIUrl":"https://doi.org/10.1109/iconspace53224.2021.9768727","url":null,"abstract":"The critically endangered West Pacific Ocean subpopulation of the leatherback turtles has faced a significant population decline in the past decades. One of the reasons for this is the loss of nesting habitats in the region. In this pilot study, turtle nesting habitats are remotely monitored employing satellite imageries. This methodology has been used to investigate the extent of habitat loss in the Kamiali wildlife management area along the Huon coast in Papua New Guinea which serves as a major hotspot for the leatherback turtles. Moreover, the conservation of this turtle species is increasingly at risk due to the intensification of community-level conflicts and paucity of donors; data collection endeavors along the Huon coast have been halted since 2014. Using Landsat 8 satellite images for the period 2013 to 2019, a 22.44 % (0.179 km2) decrease in sandy beach areas is noticable, resulting primarily from shrubs-mixed vegetation expansion and coastal squeeze following erosion. The research results highlight the urgency to revamp turtle conservation and data collection initiatives and emphasize the key role remote sensing can play in turtle habitat monitoring, particularly in areas experiencing a conflict of conservational interests. Based on the observations, the study propose four urgent technology-oriented measures - (i) revamping data collection strategies, (ii) developing turtle nesting sensitivity maps, (iii) surveying nesting habitats using drones, and (iv) investigating the influence of logging activities - to enhance leatherback turtle conservation efforts in the Kamiali region, that are expected to have wider applications across the globe especially in the West Pacific and to other sea turtle species.","PeriodicalId":378366,"journal":{"name":"2021 7th International Conference on Space Science and Communication (IconSpace)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114187531","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}

引用次数: 2

Complementary Split Square Ring Resonator-Based Double Negative Metamaterial for C, X, and Ku bands Satellite Applications 基于互补分割方环谐振器的双负超材料在C、X、Ku波段卫星应用

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768309

I. Hossain, M. Samsuzzaman, M. Baharuddin, B. Bais, T. Alam, Mandeep Jit Singh

{"title":"Complementary Split Square Ring Resonator-Based Double Negative Metamaterial for C, X, and Ku bands Satellite Applications","authors":"I. Hossain, M. Samsuzzaman, M. Baharuddin, B. Bais, T. Alam, Mandeep Jit Singh","doi":"10.1109/iconspace53224.2021.9768309","DOIUrl":"https://doi.org/10.1109/iconspace53224.2021.9768309","url":null,"abstract":"This study proposed an interlinked coupled split square ring resonator (SSRR) based metamaterial (MTM) unit cell. The double-negative (DNG) metamaterial characteristics are exhibited in C, X, and Ku microwave frequency bands. The proposed MTM unit cell contains six split square ring resonators (SSRR) where a horizontal metal bar is interlinked between the fourth and fifth SSRR and a vertical metal bar interlinks between the third and fifth SSRR. The perfect electric conductor (PEC) and Rogers- RT 5880 are used in the resonator and dielectric layer to design the MTM unit cell. The unit cell has a dimension of 10×10×1.57 mm3, and the thickness of the resonator layer and dielectric layer is 0.04 mm, 1.57 mm, respectively. The Computer Simulation Technology (CST Microwave Studio 2019) software is used to extract effective parameters then the finite element method (FEM) is used to verify the unit cell’s performance. Due to symmetrical structure, negative permittivity, negative permeability, and negative refractive are achieved. As a result, the proposed unit cell can improve microwave devices’ performance for C, X, and Ku bands, particularly satellite and radar communications.","PeriodicalId":378366,"journal":{"name":"2021 7th International Conference on Space Science and Communication (IconSpace)","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131537599","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}

引用次数: 0

Raising Students' Awareness and Achievement in Space Science with Solar Flare Monitoring Project-Based Approach 基于太阳耀斑监测项目的方法提高学生空间科学意识和成就

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768735

R. Rosli, Mardina Abdullah, N. Siregar, S. Bahari, Nurul Shazana Abdul Hamid, S. Abdullah, G. Beng, L. Halim, Noridawaty Mat Daud, B. Bais

{"title":"Raising Students' Awareness and Achievement in Space Science with Solar Flare Monitoring Project-Based Approach","authors":"R. Rosli, Mardina Abdullah, N. Siregar, S. Bahari, Nurul Shazana Abdul Hamid, S. Abdullah, G. Beng, L. Halim, Noridawaty Mat Daud, B. Bais","doi":"10.1109/iconspace53224.2021.9768735","DOIUrl":"https://doi.org/10.1109/iconspace53224.2021.9768735","url":null,"abstract":"Research has shown a need for effective instruction in learning abstract concepts in science such as astronomical and geological phenomena. This study aimed to explore secondary students' awareness and achievement in space science during a year-long solar flare monitoring outreach program conducted by university experts and facilitators. The project-based learning activities utilized the UKM Sudden Ionospheric Disturbance π (UKM-SIDπ) kit and module to prepare students with skills that meet science and technology challenges in space science. Data were collected through an instrument that comprised 13 items on awareness of space science and 20 items on knowledge of space science. The results showed that the post-data mean scores related to students' awareness and achievement of space science were higher from the pre-data setting. Involving students in a project-based approach offers meaningful experiences that could increase their motivation to learn and pursue space science subjects or courses at the higher education level. There is a need for a more aligned curriculum structure that considers how theory connects with practice in helping students to build their conceptual understanding of space science.","PeriodicalId":378366,"journal":{"name":"2021 7th International Conference on Space Science and Communication (IconSpace)","volume":"392 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116523330","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}

引用次数: 0

A developed Rectenna for Wireless Energy Harvesting System with High Efficiency 一种用于高效无线能量收集系统的整流天线

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768783

H. H. Ibrahim, Mandeep S. J. Singh, S. Al‐Bawri, Sura khalil Ibrahim, Mohammad Tausiful Islam

引用次数: 0

A Novel Moore Fractal Shaped Microwave Resonator for liquids characterizations 一种用于液体表征的新型摩尔分形微波谐振器

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768732

Russul Khalid Abdulsattar, T. Elwi, Z. A. A. Hassain

{"title":"A Novel Moore Fractal Shaped Microwave Resonator for liquids characterizations","authors":"Russul Khalid Abdulsattar, T. Elwi, Z. A. A. Hassain","doi":"10.1109/iconspace53224.2021.9768732","DOIUrl":"https://doi.org/10.1109/iconspace53224.2021.9768732","url":null,"abstract":"This work presents a microwave resonator based on Moore Metamaterial (MTM) fractal geometry which is used for liquids characterizations. The proposed design occupies a compact size of 50×50×1.6 mm3 and is imprinted on a low-cost FR4 substrate. The fourth iteration order of the Moore fractal is directly loaded to a 50 Ω transmission line. Also, a T-resonator is connected with the transmission line between the Moore loads on the two sides. The transmission line is defected with two gaps from the region of the fractal connection. The resulted structure is found to be operated at 0.8 GHz. To optimize the proposed sensor performance, a parametric study is invoked based on CST MWS numerical simulation software package. The performance of the proposed resonator in terms of S11 and S21 are evaluated numerically. For liquids characterizations purposes, a pair of pans is printed on the proposed resonator surface from the same material of the substrate. Therefore, three different pans pairs are induced to realize the best fit for the proposed applications with minimum effects on the original performance of the proposed resonator. It is found the minimum effects could happen to the proposed resonator when the pans are shaped as whittle geometry. The measured resonant frequency shift is before and after adding the pans is found about 140 MHz. Moreover, it is concluded that the proposed resonator based whittle pans are the best candidate among other suggested geometries for fluid identification. Finally, the proposed resonator is fabricated, the experimentally results are found to agree very well with the simulation results.","PeriodicalId":378366,"journal":{"name":"2021 7th International Conference on Space Science and Communication (IconSpace)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115725379","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}

引用次数: 1

Preliminary Observations of Cold-Point Tropopause Temperature, Altitude, and Pressure in 2020 over Laoag, Philippines Using Radiosonde 利用无线电探空仪对2020年菲律宾劳阿格上空对流层顶冷点温度、高度和压力的初步观测

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768713

R. M. Guido, E. Macalalad, J. Kalaw, P. Tucio, P. P. Divinagracia

{"title":"Preliminary Observations of Cold-Point Tropopause Temperature, Altitude, and Pressure in 2020 over Laoag, Philippines Using Radiosonde","authors":"R. M. Guido, E. Macalalad, J. Kalaw, P. Tucio, P. P. Divinagracia","doi":"10.1109/iconspace53224.2021.9768713","DOIUrl":"https://doi.org/10.1109/iconspace53224.2021.9768713","url":null,"abstract":"This study covers the 2020 tropical tropopause in the Philippines. Currently there are limited studies and would like to contribute on the exploration of tropical tropopause in the Philippines. The Cold-point tropopause (CPT) data such as altitude (CPT-A), temperature (CPT-T), and pressure (CPT-P), were retrieved from the National Oceanic and Atmospheric Administration (NOAA) National Centers for Environmental Information through the Integrated Global Radiosonde Archive (IGRA). This study reveals that both the CPT-P and CPT-T, which reached their peak in August and had their lowest levels in October. This is seen in the observation of the dry, chilly season in the Philippines. The variations in CPT-A, CPT-T, and CPT-P allow for the measurement of the annual fluctuation in the temperature of the Philippines. During the year 2020, the CPT-A and CPT-T levels are both decreasing while CPT-P is increasing. The results of this study complement findings from earlier studies, which typically indicate the transition in the Philippines occur during the country's tropical season. The CPT-T rises as the rainy season approaches, and peaks in August. During the dry season, the mean CPT-T value falls, hitting a minimum in October, which corresponds with the cold dry season. The opposite relationship exists between CPT-A and CPT-P observations.","PeriodicalId":378366,"journal":{"name":"2021 7th International Conference on Space Science and Communication (IconSpace)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117177888","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}

引用次数: 0

Preliminary Analysis of the Geomagnetically Induced Current at the Malaysian Power Network 马来西亚电网地磁感应电流的初步分析

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768744

K. Burhanudin, M. H. Jusoh, Ahmad Farid Abidin, M. Hidayat, Mohd Helmy Hashim, Z. I. Abd Latiff, A. Yoshikawa

{"title":"Preliminary Analysis of the Geomagnetically Induced Current at the Malaysian Power Network","authors":"K. Burhanudin, M. H. Jusoh, Ahmad Farid Abidin, M. Hidayat, Mohd Helmy Hashim, Z. I. Abd Latiff, A. Yoshikawa","doi":"10.1109/iconspace53224.2021.9768744","DOIUrl":"https://doi.org/10.1109/iconspace53224.2021.9768744","url":null,"abstract":"The formation of the Geomagnetic Induced Current (GIC) from the underground becoming a threat to the electrical appliances due to its natural form of current that flows from the underground to electrical appliances. The measurement at the neutral point of the 275kV transformer has been conducted to identify the existence of the GIC from the underground. The measurement is conducted at the Tenaga Nasional Berhad (TNB), KUL South, Taman Pelangi, Petaling Jaya, Kuala Lumpur with geographic latitude and longitude (3° 4' 37\" and 101° 39' 55\") by using HIOKI measurement equipment. Based on the measurement conducted, there are two categories of the storm which existed during the measurement which is a moderate and weak storm. The preliminary analysis on the level of the GIC is conducted based on the data from OmniWeb, local magnetic data acquisition system (MAGDAS) data, and the measurement data at the neutral point of the transformer. The estimation of the GIC is calculated based on the local MAGDAS data. The preliminary examination of the GIC in the Malaysian Power Network is necessary to determine the GIC's threshold limit. In a pattern, the estimating process displays the similarities between the measured and calculated GIC.","PeriodicalId":378366,"journal":{"name":"2021 7th International Conference on Space Science and Communication (IconSpace)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115263462","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}

引用次数: 0

Preliminary Analysis of Satellite Navigation Effects of the Strong Solar Flares during Solar Cycle 24 第24太阳活动周期强烈太阳耀斑的卫星导航效应初步分析

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768696

P. P. Divinagracia, E. Macalalad, R. M. Guido, P. Tucio, J. Kalaw

{"title":"Preliminary Analysis of Satellite Navigation Effects of the Strong Solar Flares during Solar Cycle 24","authors":"P. P. Divinagracia, E. Macalalad, R. M. Guido, P. Tucio, J. Kalaw","doi":"10.1109/iconspace53224.2021.9768696","DOIUrl":"https://doi.org/10.1109/iconspace53224.2021.9768696","url":null,"abstract":"Solar flares can affect Earth’s navigation system through disrupting GPS accuracy. It may be associated with coronal mass ejection or it can have other effects like geomagnetic storms which may occur several days after the flare event. This study examined the satellite navigation effects of the four strongest solar flares during solar cycle 24 over a GNSS station located at Taguig City, Philippines (station ID: PTAG). Particularly the primary effects such as GPS positioning error or any secondary impact like geomagnetic storms. The researchers obtained RINEX observation and navigation files for PTAG station from IGS Data Center, and calculated positioning error over this location through gLAB. Sun’s x-ray radiation and radio emissions (at 610, 1415 and 2695 MHz) were analyzed together with the positioning error to identify any direct effect of solar flares. While Dst and Kp indices were plotted in order to recognize geomagnetic activity post-flare event. Results indicated that not all solar flares will trigger geomagnetic storms. It is also worth mentioning that there are considerations when investigating solar flare consequences such as the observer’s location relative to the flare event and coronal mass ejection associated with it. A solar x-ray flux with lower intensity may still induce degradation in GPS positioning accuracy. Hence, it is important to track and catalog solar activity so that we will be prepared for any of its adverse effects.","PeriodicalId":378366,"journal":{"name":"2021 7th International Conference on Space Science and Communication (IconSpace)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122982198","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}

引用次数: 1

Skew Planar Wheel Antenna for First Person View of Unmanned Aerial Vehicle 面向无人机第一人称视角的倾斜平面轮式天线

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768722

R. Y. Purba, Levy Olivia Nur, R. Anwar

引用次数: 0

Preliminary Studies on Recovering Communities from Typhoon using Radiance Measurement from VIIRS 利用VIIRS辐射测量恢复台风灾害群落的初步研究

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768701

Ma. Luisa Bernadet P. Dasco, Ryan Manuel Guido

{"title":"Preliminary Studies on Recovering Communities from Typhoon using Radiance Measurement from VIIRS","authors":"Ma. Luisa Bernadet P. Dasco, Ryan Manuel Guido","doi":"10.1109/iconspace53224.2021.9768701","DOIUrl":"https://doi.org/10.1109/iconspace53224.2021.9768701","url":null,"abstract":"Typhoons have been one of the most destructive natural disasters in the world. The Philippines has visited by about 20 tropical cyclones per year and the Bicol region is regarded to be the most disaster-prone area in the country. On November 1, 2020, a locally known Typhoon Rolly had struck the Bicol region causing widespread damage in the area. The Visible Infrared Imaging Radiometer Suite (VIIRS) significantly can use to quantify the damages or loss by detecting the changes in power outages before and after the typhoon using the well- calibrated day/night band (DNB). Comparison of the Nighttime light images help to determine the recovery phase of the Bicol region by extracting the red pixel value of the images using Python. The data were obtained from the EOSDIS worldview from September 2020 to March 2021. These images were affected by unnecessary noises thus, it has to be cropped and cleaned to have accurate pixel value. The primary objective of this research is to explore the use of the VIIRS instrument with DNB sensor as the first-hand method in monitoring and collecting data on recovering communities from typhoon among the affected population and human settlements. The analysis shows that Visible Infrared Imaging Radiometer Suite (VIIRS) is useful in detecting power outages and has potential use in the rapid assessment of typhoon disasters. Rapid and effective assessment of typhoon damages is useful supplementary data for Government disaster response and policymaking.","PeriodicalId":378366,"journal":{"name":"2021 7th International Conference on Space Science and Communication (IconSpace)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130195164","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}

引用次数: 0