2021 7th International Conference on Space Science and Communication (IconSpace)最新文献_第5页

Rainfall Effect on Satellite Communications in Mosul at Frequencies above 10 GHz 降雨对摩苏尔10千兆赫以上频率卫星通信的影响

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768738

A. Al-Saegh, T. Elwi, O. Abdullah, A. Sali, A. H. Aljumaily

引用次数: 0

Impact of the Quasi Biennial Oscillation on the EEJ Intensity 准两年振荡对EEJ强度的影响

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768721

Wan Nur Izzaty Ismail, Nurul Shazana Abdul Hamid, Mardina Abdullah

引用次数: 0

A High Gain and Low Cross-Polarization Compact Slotted Patch Antenna for 5G Wireless Communication Applications 面向5G无线通信应用的高增益低交叉极化紧凑型开槽贴片天线

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768679

Sura Khalil Ibrahim, S. Al‐Bawri, Mandeep S. J. Singh, Husam Hamid Ibrahim, Mohammad Tausiful Islam

{"title":"A High Gain and Low Cross-Polarization Compact Slotted Patch Antenna for 5G Wireless Communication Applications","authors":"Sura Khalil Ibrahim, S. Al‐Bawri, Mandeep S. J. Singh, Husam Hamid Ibrahim, Mohammad Tausiful Islam","doi":"10.1109/iconspace53224.2021.9768679","DOIUrl":"https://doi.org/10.1109/iconspace53224.2021.9768679","url":null,"abstract":"Using a slotted feed line and proximity coupled feeding method, a lightweight slotted rectangular microstrip patch antenna with high gain and minimal cross-polarization properties for 5G wireless applications is proposed. The proposed model operates in sub-6GHz band with frequency span of 3.5GHz, whereas the exhibits bandwidth is 206 MHz. A compact slotted patch size with 32×25.7 mm2 is etching on the top layer of low permittivity PCB board whereas full ground is applied on the back side of the second layer. Besides, a series of rectangular slots are applied in the middle layer to increase the impedance bandwidth, gain, efficiency, and decrease reflection coefficient. The overall dimensions are 43.36×35×1.575 mm3. Moreover, the overall performance is improved by using above mentioned slotted strip, such as the radiation efficiency with 83% as well as the gain increased up to 6.58 dBi. The reflection coefficient (S11) of this antenna configuration is -28.774 dB, respectively, with a -70.6 dBi of low cross-polarization.","PeriodicalId":378366,"journal":{"name":"2021 7th International Conference on Space Science and Communication (IconSpace)","volume":"13 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":"128773853","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

Reconstruction of Mirror Structures in the Magnetosheath Observed by MMS Spacecraft MMS航天器观测磁鞘反射镜结构的重建

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768707

Teh Wai Leong

{"title":"Reconstruction of Mirror Structures in the Magnetosheath Observed by MMS Spacecraft","authors":"Teh Wai Leong","doi":"10.1109/iconspace53224.2021.9768707","DOIUrl":"https://doi.org/10.1109/iconspace53224.2021.9768707","url":null,"abstract":"Mirror structures are a by-product of mirror-mode instability in the collisionless plasma with pressure anisotropy of p⊥ > p||. The subscripts 1 and || denote the components perpendicular and parallel to the local magnetic field. Mirror structures are of a compressible magnetic field structure, in which the magnetic field strength is anti-correlated with the plasma density. A two-dimensional reconstruction technique is recently developed successfully to recover steady, magnetohydrostatic coherent structures with pressure anisotropy, using magnetic field and plasma data from a single spacecraft. This paper presented reconstruction maps of mirror structures in the Earth’s magnetosheath observed by the Magnetospheric Multiscale (MMS) spacecraft. A series of magnetic bottle-like structures was recovered, and its invariant axis was nearly perpendicular to the average magnetic field. The width of the magnetic trough was ~2000 km, while the separation between two troughs within the same flux tube was ~8000 km. The mirror structures were more or less aligned with the average magnetic field projected on the reconstruction plane.","PeriodicalId":378366,"journal":{"name":"2021 7th International Conference on Space Science and Communication (IconSpace)","volume":"79 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":"131042969","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

Review of Forecasting the Critical Frequency of the Ionospheric F2 Layer 电离层F2层临界频率预报研究进展

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768778

Nabilla Risal, M. J. Homam

引用次数: 0

Analysis of Aperture Coupled Circular Patch Antenna for Mid-Band 5G 中频段5G孔径耦合圆形贴片天线分析

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768720

S. R. Isa, M. Jusoh, T. Sabapathy, M. Kamarudin, Mohamed Nasrun Osman, H. A. Bakar, M. Tariqul Islam, M. Alaydrus

引用次数: 0

Low Cost Dual Mode Phased Array Antenna In Ka Band Frequency For Feeder Link Satellite Communication 用于馈线卫星通信的低成本Ka频段双模相控阵天线

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768315

Haider Haider, Eryana Hussin, N. Sahar

引用次数: 0

Possible Earthquake Precursors Observed in Geomagnetic Variations in the East Coast of Honshu, Japan 日本本州东海岸地磁变化中观测到的可能的地震前兆

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768687

Nur Fatin Irdina Zulhamidi, M. Abdullah, Nurul Shazana Abdul Hamid, Khairul Adib Yusof

{"title":"Possible Earthquake Precursors Observed in Geomagnetic Variations in the East Coast of Honshu, Japan","authors":"Nur Fatin Irdina Zulhamidi, M. Abdullah, Nurul Shazana Abdul Hamid, Khairul Adib Yusof","doi":"10.1109/iconspace53224.2021.9768687","DOIUrl":"https://doi.org/10.1109/iconspace53224.2021.9768687","url":null,"abstract":"The application of electromagnetic signals in earthquake study has been demonstrated by previous researchers by monitoring the geomagnetic variations. This prospective study sought to enhance the reliability of earthquake forecasting, by extending the study to a non-seismological area since the previous studies were mainly focused more in the seismological area. A case-study approach was conducted in this study by utilizing the diurnal variation range ratio (DVRR) method. Five earthquake events that occurred between January 2005 and December 2016 in the vicinity of the east coast of Honshu, Japan were observed. The anomalies were detected as early as 60 days to 1 day prior to the earthquake events. All geomagnetic N, E, and Z-components showed anomalous behavior during the quiet days but with temporal lags between the components. It can be concluded that the anomalies were not related to global geomagnetic disturbances and might be associated with the respective earthquake events. The diurnal range of geomagnetic variations were also influenced by the focal mechanism since the events with reversed faulting showed increasing geomagnetic variations, meanwhile only one event with normal faulting shows the mixture of increase and decrease of geomagnetic variations diurnal range prior to the earthquakes. Future studies will be conducted to correlate with seismo-ionospheric response and physical ground movement prior to the events.","PeriodicalId":378366,"journal":{"name":"2021 7th International Conference on Space Science and Communication (IconSpace)","volume":"16 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":"116881341","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

Crop Monitoring of Paddy Field Using Landsat 8 OLI 利用Landsat 8 OLI进行稻田作物监测

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768684

Nur Aina Izzati Binti Yacob, Amir Sharifuddin Bin Ab Latip, Saiful Aman Bin Haji Sulaiman

{"title":"Crop Monitoring of Paddy Field Using Landsat 8 OLI","authors":"Nur Aina Izzati Binti Yacob, Amir Sharifuddin Bin Ab Latip, Saiful Aman Bin Haji Sulaiman","doi":"10.1109/iconspace53224.2021.9768684","DOIUrl":"https://doi.org/10.1109/iconspace53224.2021.9768684","url":null,"abstract":"Rice production of paddy fields is the main source of food for the Malaysian and thus the stability of the production is important for the food security program. Therefore, monitoring of its availability become the main agenda of Malaysia. In this study, the vegetation index parameters of Normalized Difference Vegetation Index (NDVI) and Soil Adjusted Vegetation Index (SAVI) were derived from multispectral remote sensing images and used to produce health crop maps. The Landsat 8 images with 30 m resolution were acquired in the study area of the paddy field in Sabak Bernam. The data was then processed using Erdas Imagine and ArcGIS Pro to estimate NDVI and SAVI values and generate the health crop maps, respectively. The results show that the standard deviation of the difference between NDVI and SAVI was highest in October at 0.07, while the lowest in February of 0.02. It indicates that the capabilities of NDVI and SAVI were different in extracting the values of vegetation indices in high vegetation areas. The values of NDVI and SAVI range from -1 to +1 which the value of -1 indicates the dead vegetation; meanwhile, the value of 1 shows the healthiest vegetation.","PeriodicalId":378366,"journal":{"name":"2021 7th International Conference on Space Science and Communication (IconSpace)","volume":"32 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":"121769133","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

Variations of Precipitable Water Vapor Associated with TY Haima in 2016 over the Philippines using Global Navigation Satellite System 利用全球导航卫星系统分析菲律宾2016年与台风海马相关的可降水量变化

2021 7th International Conference on Space Science and Communication (IconSpace) Pub Date : 2021-11-23 DOI: 10.1109/iconspace53224.2021.9768739

Rodalyn A. Balajadia, A. L. S. Domingo, E. Macalalad

{"title":"Variations of Precipitable Water Vapor Associated with TY Haima in 2016 over the Philippines using Global Navigation Satellite System","authors":"Rodalyn A. Balajadia, A. L. S. Domingo, E. Macalalad","doi":"10.1109/iconspace53224.2021.9768739","DOIUrl":"https://doi.org/10.1109/iconspace53224.2021.9768739","url":null,"abstract":"Variations in precipitable water vapor (PWV) can be used to investigate a typhoon (TY). In this paper, TY Haima along the Philippine Area of Responsibility (PAR) were investigated using GNSS-derived PWV of two stations, PBAT and PBAS, in Luzon along with other relevant atmospheric parameters. The results show that TY’s regions are reflected in PWV variations. As TY Haima approached and left the two stations, their recorded PWV values increased and decreased which are consistent with results of other studies [4] [5] [10] but with positive difference of PWV values between the two, indicating that different regions of the TY hit the two stations, with PBAT having higher and lower PWV values than PBAS before and after the TY hit. Using distance calculated between the eye of the TY and the two stations, pressure and rainfall data, it was deduced that PBAT is nearer to the eye of the TY than PBAS, suggesting that a station nearer to the eye of the TY will have higher PWVs than a station in a different region of the TY.","PeriodicalId":378366,"journal":{"name":"2021 7th International Conference on Space Science and Communication (IconSpace)","volume":"41 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":"117352369","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