2015 International Conference on Space Science and Communication (IconSpace)最新文献_第3页

Circularly polarized patch antenna for S-band satellite applications s波段卫星用圆极化贴片天线

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283837

R. Azim, M. Samsuzzaman, T. Alam, M. Islam, M. Faruque, M. Zaman, M. Islam

引用次数: 7

Multiband dielectric resonator antenna (DRA) for Long Term Evolution Advanced (LTE-A) handheld devices 用于长期演进高级(LTE-A)手持设备的多波段介电谐振器天线(DRA)

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283820

N. Embong, M. Mansor

引用次数: 2

Individual tree crown (ITC) delineation using watershed transformation algorithm for tropical lowland dipterocarp 基于流域变换算法的热带低地龙脑树单株树冠圈定

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283795

Nurul Ain Mohd Zaki, Z. Abd Latif, M. Z. Zainal, K. Zainuddin

{"title":"Individual tree crown (ITC) delineation using watershed transformation algorithm for tropical lowland dipterocarp","authors":"Nurul Ain Mohd Zaki, Z. Abd Latif, M. Z. Zainal, K. Zainuddin","doi":"10.1109/ICONSPACE.2015.7283795","DOIUrl":"https://doi.org/10.1109/ICONSPACE.2015.7283795","url":null,"abstract":"Tropical forest embraces a large stock of carbon and contributes to the enormous amount of above and below ground biomass in the global carbon cycle. Very high resolution imagery (VHR) satellite imagery can provide new opportunities to estimate the biomass and carbon stock of the forest area using crown projection area (CPA) as one of the predictor variable for accurately estimation the biophysical of the individual trees. Using multi-resolution segmentation resulted in inclusive accuracy of 82% in 1:1 correspondence and 78% segmentation accuracy with 21% error was observed from goodness of fit (D) value. Watershed transformation algorithm had been proven that suitable to be used to delineate the tree crown of the tropical lowland Dipterocarp forest area. In this study, data had been collected in tropical lowland Dipterocarp Royal Belum Forest Reserve, Perak State, Malaysia. The dominant species of this studies comes from families Dipterocarpaceae, Myrtaceae, Fabaceae and Lauraceae. A circular plot of 500 m2 area with a 12.62 m radius had been used during forest inventory data collection. This paper offer a methodology and accuracy assessment for measuring the crown delineation for tropical forest inventory data using very high resolution imagery(VHR) assembly to accomplish the Reducing Emissions from Deforestation and Forest Degradation (REDD) monitoring, reporting and verification process.","PeriodicalId":150022,"journal":{"name":"2015 International Conference on Space Science and Communication (IconSpace)","volume":"98 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":"115179057","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: 10

Refractivity gradient in lowest layer of atmosphere near Arabian Sea 阿拉伯海附近大气最底层的折射梯度

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283759

Saeed ur Rehman, A. Ullah, N. Mufti

引用次数: 1

The relationship between total electron content (TEC), tides phenomena and the position of moon and sun during the full moon and new moon in Selangor 雪兰莪州满月和新月期间总电子含量(TEC)、潮汐现象与月亮和太阳位置的关系

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283766

N. S. Mohamad, K. Chellappan

{"title":"The relationship between total electron content (TEC), tides phenomena and the position of moon and sun during the full moon and new moon in Selangor","authors":"N. S. Mohamad, K. Chellappan","doi":"10.1109/ICONSPACE.2015.7283766","DOIUrl":"https://doi.org/10.1109/ICONSPACE.2015.7283766","url":null,"abstract":"Moon and sun is causative agent in the formation of tides. Tidal is a natural phenomenon caused by the gravitational force of attraction between moon and sun. The sun activity in ionospheric layer affects the variation of total electron content (TEC). This paper presents the relationship between total electron content (TEC), tidal phenomenon and the position of the moon and sun during the full moon and new moon occurrence in Selangor. The analysis was carried out from May 2013 until May 2014. The TEC were obtained by using GPS Ionospheric Scintillation and TEC monitor (GISTM) at UKM Bangi station while the tidal readings were capture from Port Klang. TEC and tidal reported consistent with a negative correlation. The gravitational effect of the new moon is equal to the full moon and based on the result, the highest tide value has been recorded on the 31st January 2014 which found to be the day which moon is closes to the earth and earth is closes to sun. This paper states the outcome of moon and sun position ratio to earth against TEC. In reference to the result obtained, the TEC value increased with the position ratio during new moon occurrence while during the full moon occurrence, the TEC value decreased with the position ratio. In regard to this analysis, it can be concluded that the TEC is directly proportional to the ratio of the position of moon and sun from earth.","PeriodicalId":150022,"journal":{"name":"2015 International Conference on Space Science and Communication (IconSpace)","volume":"2 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":"122588025","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

Rotation curve and dynamical mass in the inner region of M100 with ALMA 用ALMA观测M100内部区域的旋转曲线和动力质量

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283748

Jazeel H. Azeez, Z. Abidin, Z. A. Ibrahim, C. Hwang

引用次数: 2

Comparison of digital elevation models based on high resolution satellite stereo imagery 基于高分辨率卫星立体影像的数字高程模型比较

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283789

A. Qayyum, A. Malik, Muhammad Naufal Bin muhammad Saad

引用次数: 2

MHD reconstruction of a magnetic cloud in the solar wind 太阳风中磁云的MHD重建

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283745

W. Teh, M. Abdullah

引用次数: 0

Comparing IRI and regional ionospheric model with ionosonde foF2 measurements in Pakistan 比较IRI和区域电离层模式与巴基斯坦电离层探测仪测量的of2

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283755

M. Talha, Ghulam Murtaza, M. A. Ameen

{"title":"Comparing IRI and regional ionospheric model with ionosonde foF2 measurements in Pakistan","authors":"M. Talha, Ghulam Murtaza, M. A. Ameen","doi":"10.1109/ICONSPACE.2015.7283755","DOIUrl":"https://doi.org/10.1109/ICONSPACE.2015.7283755","url":null,"abstract":"Critical frequency of F2 layer acquired by three ionosonde stations, Karachi (KHI, 24.95°N, 67.13°E), Multan (MUL, 30.18°N, 71.48°E) & Islamabad (ISL, 33.75°N, 73.13°E), in Pakistan has been compared with foF2 obtained from global ionospheric model IRI-2012 and computed from regional ionospheric model using higher terms of Emperical Orthogonal Functions (EOFs) during summer (July). The data has been compared at different phases of solar epoches. The computational sets using higher number of terms of EOFs (L > 1) showed slight different deviations from observations with respect to the expansion of EOFs using least number of terms (L = 1). Both models revealed good to reasonable agreement with the observed values for Multan and Islamabad. However for Karachi, considerable deviations between the models and observations are noted at different solar epoches except deep solar minimum due to its location which lies within equatorial ionization anomaly region. In general, regional model gives better results compared to IRI for MUL and ISL whereas IRI worked better for Karachi. Thus further improvements in regional model are required to get promosing results especially for EIA region station.","PeriodicalId":150022,"journal":{"name":"2015 International Conference on Space Science and Communication (IconSpace)","volume":"21 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":"130241736","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 study on the near equatorial magnetic field model and South Atlantic Anomaly 近赤道磁场模式与南大西洋异常的初步研究

2015 International Conference on Space Science and Communication (IconSpace) Pub Date : 2015-10-01 DOI: 10.1109/ICONSPACE.2015.7283743

Khairul Afifi Nasuddin, M. Abdullah, N. S. A. Hamid, A. Hasbi

引用次数: 1