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Yakin, Nurman
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Humanities Economics, Econometrics & Finance Education Industrial & Manufacturing Engineering

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KENAIKAN NILAI POWER UP-LINK PADA VSAT SCPC UNTUK LINK BUDGET UPLINK DAN DOWNLINK SERTA PENURUNAN NILAI Eb/No KARENA REDAMAN HUJAN Marsun, Marsun; Arief, Muhammad; Yakin, Nurman; Utami, Dian
Journal of Industrial Engineering & Management Research Vol. 6 No. 3 (2025): June 2025
Publisher : AGUSPATI Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7777/jiemar.v6i3.597

Abstract

Nilai Carrier To Noise Uplink (C/N)up dan Carrier To Noise Downlink (C/N)d akan berkurang akibat hujan karena adanya pengurangan daya carrier yang diterima oleh satelit dan juga stasiun bumi. Akibatnya, nilai Eb/No akan berkurang ataupun menurun, hal ini tentu saja akan mempengaruhi kinerja komunikasi satelit dalam hal ini adalah VSAT SCPC. Meskipun penurunan Eb/No kecil, namun sangat mempengaruhi kualitas link komunikasi satelit yang digunakan . Untuk mengantisipasi penurunan nilai Eb/No maka digunakan metode Automatic Uplink Power Control (AUPC). AUPC berfungsi untuk meningkatan daya secara otomatis pada saat terjadinya penurunan nilai Eb/No. Untuk itu diperlukan sebuah analisis terhadap kenaikan nilai AUPC terhadap penurunan nilai Eb/No yang disebabkan pengaruh redaman hujan terhadap link budget arah uplink dan downlink. Pemodelan redaman hujan menggunakan ITU-R Model yang akan dihubungkan dengan sistem VSAT SCPC, sehingga dapat diketahui berapa besarnya redaman hujan yang terjadi. Selanjutnya nilai AUPC akan diatur secaraotomatis sehingga nilai Eb/No dapat disesuaikan untuk menghindari kondisi minimalnya yang dapatberakibat pada naiknya nilai Bit Error Rate (BER).Redaman hujan merupakan salah satu redaman yang harus diperhatikan ataupun diperhitungkan padasaat penggunaan komunikasi satelit.
IDENTIFYING AND MAPPING POTENTIAL GROUNDWATER USING THE 1-D GEOELECTRIC RESISTIVITY METHOD AT BOA VILLAGE, ROTE NDAO REGENCY,EAST NUSA TENGGARA Arief, Muhammad; Suwandi, Suwandi; Kustiawan, Eko; Marsun, Marsun; Utami, Dian; Yakin, Nurman
Journal of Industrial Engineering & Management Research Vol. 6 No. 6 (2025): December 2025
Publisher : AGUSPATI Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7777/jiemar.v6i6.672

Abstract

Water is a basic human need. Population in Rote Regenscy growth up very fast led to increased water demand, but water management does not meet the required quantity. Therefore, research is needed to map groundwater potential for clean water supply for the community. This research was conducted in Boa Village, Rote Barat Distric, Rote Ndao Regency, East Nusa Tenggara. The purpose of this study was to determine the groundwater potential in the aquifer and the lithology type, depth, and thickness of the groundwater aquifer based on the resistivity of the rock types. Data acquisition in this study was conducted using the Schlumberger 1-D geoelectric method. Measurements were taken at three sounding points with a span of 40–50 meters. Based on the results of the 1D Ip2Win data processing, it was determined that the subsurface lithology of the study area consists of top soil, overburden, coral reff, rock , limestone, and sand.
Co-Authors Arief, Muhammad Dian Utami, Dian Kustiawan, Eko Marsun, Marsun Suwandi Suwandi