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

GPS signal strength due to ionospheric scintillation: Preliminary models over Sarawak 电离层闪烁引起的GPS信号强度:沙捞越上空的初步模型

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283749

V. P. Bong, W. A. Wan Zainal Abidin, M. Abdullah, K. H. Ping, T. Masri, S. Bahari, I. Abba

{"title":"GPS signal strength due to ionospheric scintillation: Preliminary models over Sarawak","authors":"V. P. Bong, W. A. Wan Zainal Abidin, M. Abdullah, K. H. Ping, T. Masri, S. Bahari, I. Abba","doi":"10.1109/ICONSPACE.2015.7283749","DOIUrl":"https://doi.org/10.1109/ICONSPACE.2015.7283749","url":null,"abstract":"The renowned effect of space weather is fluctuation in the amplitude of the radio signal that propagates in the ionosphere especially in the equatorial region. This fluctuation is also referred to as scintillation that will intense, degrades the signal quality, reduce the information content, or cause failure of the signal reception. Space-based radio navigation systems such as the Global Positioning System (GPS) will provide us with a unique opportunity to characterize the ionospheric scintillation effect as the signals propagate from the satellites to the GPS receiver. Sarawak, which is located near to the equatorial region, has been selected for the aim of this research. By using amplitude scintillation data recorded by the GPS Ionospheric Scintillation & TEC Monitor (GISTM), ionospheric irregularities along the path was examined and related to the signal strength performance. Methods and procedures to study and analyze the amplitude scintillation data are presented. Furthermore, the amplitude scintillation parameter is related to signal-to-noise ratio (SNR) in order to model the GPS satellite signal strength in this region. The preliminary developed SNR empirical models are a function of amplitude scintillation from the reference station path to the satellites. These contribute to the knowledge of received satellite signals strength performance in terms of ionospheric amplitude scintillation.","PeriodicalId":150022,"journal":{"name":"2015 International Conference on Space Science and Communication (IconSpace)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125802543","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

Development and design challenges in VELOX-I nanosatellite velox - 1纳米卫星的开发和设计挑战

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283826

L. S. Lim, T. Bui, Z. Lau, M. Tissera, J. J. Soon, J. Lew, H. Aung, C. Ye, K. Low, S. Goh, S. Chen

引用次数: 4

Investigations into the occurrence of elevated ducts in lower atmosphere near Arabian Sea 阿拉伯海附近低层大气高架风道发生的调查

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283757

A. Ullah, S. Rehman, N. Mufti

引用次数: 3

Design and development of Motorized Adjustable Vertical Platform (MAVeP) for satellite test facility 卫星试验装置机动可调垂直平台的设计与研制

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283841

Elena Woo Lai Leng, Nor’asnilawati Salleh, H. Salim, S. F. Sabri, M. Ismail

{"title":"Design and development of Motorized Adjustable Vertical Platform (MAVeP) for satellite test facility","authors":"Elena Woo Lai Leng, Nor’asnilawati Salleh, H. Salim, S. F. Sabri, M. Ismail","doi":"10.1109/ICONSPACE.2015.7283841","DOIUrl":"https://doi.org/10.1109/ICONSPACE.2015.7283841","url":null,"abstract":"A mobile trolley allows engineers to do integration work at various parts of the satellite body, thus preventing mishandling of the satellite. Unfortunately, the existing height multi-purpose satellite trolley in Satellite Assembly, Integration and test facility of Malaysia Space Centre is not an adjustable type and there is no platform to work safely around the satellite. Existing conditions in the facility and limitation on the Thermal Vacuum Chamber requires a multi-purpose trolley to be custom-made. Thus, there is a need to design and develop a Motorized Adjustable Vertical Platform (MAVeP) for Satellite Assembly, Integration and Test (AIT) Facility. The MAVeP is expected to ensure the smoothness of AIT operation without jeopardizing the safety of the spacecraft. Not only that, the MAVeP is also expected to minimize handling risks as it will provide direct access to the satellite. In addition, this project will also help the researcher to gain knowledge and increase skill in designing mechanical ground support equipment (MGSE) from the design process up to development and integration.","PeriodicalId":150022,"journal":{"name":"2015 International Conference on Space Science and Communication (IconSpace)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132769041","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: 6

Amplitude estimate of the ultra wide band quasi radio signal with unknown initial phase and duration 初始相位和持续时间未知的超宽带准无线电信号的幅度估计

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283828

Y. Korchagin, O. Chernoyarov, A. Makarov, A. Salnikova

引用次数: 0

A look at oil spill detection and identification using SAR 利用SAR检测和识别溢油

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283779

Ng Su Wai

引用次数: 2

An analysis of digital sunspot counting for determination of sunspot number from Langkawi National Observatory 兰卡威国家天文台对数字太阳黑子计数的分析

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283744

F. Kamarudin, M. R. Tahar, A. H. A. Aziz, N. R. Saibaka, B. Setiahadi

{"title":"An analysis of digital sunspot counting for determination of sunspot number from Langkawi National Observatory","authors":"F. Kamarudin, M. R. Tahar, A. H. A. Aziz, N. R. Saibaka, B. Setiahadi","doi":"10.1109/ICONSPACE.2015.7283744","DOIUrl":"https://doi.org/10.1109/ICONSPACE.2015.7283744","url":null,"abstract":"The Relative Sunspot Number (RSN) has been determined for centuries manually (visually) and internationally recorded by Solar Influence Data Center (SIDC). This has been the case even today due to strong goal of keeping the sunspot counting data consistent, dating back to the early 1600s. The RSN indicates the Sun's magnetic activities and therefore accurate detection and classification are fundamental. The active use of digital CCD cameras in modern astronomy today has made huge progress in this field. Hence, Langkawi National Observatory (LNO) is fully equipped to conduct astronomical researches digitally including its solar observatory setup. LNO solar observatory has been collecting daily solar images since early 2008, so a digital method of calculating the RSN needs to be developed that corresponds closely to the international RSN. Here, we present the methods, algorithm and results from a small program that was developed based on the data at LNO. The results are found to be consistent with a correlation value between the digital sunspot counting program and International RSN to be at R2 = 0.7851 for overall data and R2=0.9269 (93%) for good images. However this value varies with different quality of images and therefore a very simple method to differentiate the image quality had to be developed before any sunspot counting was done.","PeriodicalId":150022,"journal":{"name":"2015 International Conference on Space Science and Communication (IconSpace)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129835399","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 rain attenuation measurements on earth — Space links in Nigeria 尼日利亚地球-空间链路上雨水衰减测量的回顾

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283813

T. Omotosho, O. Obiyemi, J. Mandeep, M. Abdullah, S. A. Akinwumi, A. Willoughby, O. Ometan, M. O. Adewusi

引用次数: 6

Predicting column averaged dry-air mole fractions of carbon dioxide (XCO2) in Peninsular Malaysia by using GOSAT data 利用GOSAT数据预测马来西亚半岛柱平均干空气二氧化碳摩尔分数(XCO2)

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283805

Sim Chong Keat, L. H. San, M. Jafri

引用次数: 0

A review of ionospheric studies in Malaysia using GPS 马来西亚利用GPS进行电离层研究综述

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283751

S. Bahari, M. Abdullah, A. Hasbi

引用次数: 5