Pub Date : 2023-03-31DOI: 10.24843/spektrum.2023.v10.i01.p7
Putu Okta, Hadi Saputra, I. P. Ardana, N. Pramaita
The role of the sea is very important as unifying the nation and the territory of Indonesia and consequently the Government is obliged to administer governance in the field of law enforcement both against threats of violations against the use of waters and to maintain and create shipping safety and security. One way to increase the ability of the apparatus and the government to monitor and secure the territory of the Unitary State of the Republic of Indonesia is to use the AIS (Automatic Identification System) system. This AIS is used to monitor the movement of ships and provide or receive information so that actions that can harm the Unitary State of the Republic of Indonesia can be prevented. Currently, ships in Indonesia are equipped with radar, but the scope of the radar emitted by Indonesian ships is still small and small. To overcome these problems the author wants to develop a thesis with the title "YAGI-LPDA Antenna Design at 162 MHz Frequency for Automatic Identification System (AIS) on Ships in Bali Island Waters" This antenna works by being connected to the AIS system at 162 MHz frequency which able to reach the presence of ships in the waters of the Bali Strait, Lombok Strait and its surroundings. The Yagi-LPDA antenna design prototype works in accordance with the antenna design in the MMANA-GAL software, namely in the form of an SWR with a value of 1.73, a gain of 8.12 dBi, and a radiation pattern that is unidirectional and during the ship monitoring process, the Yagi-LPDA antenna can be work well seen from the direction of the Yagi-LPDA antenna beam which is in the same direction and focused so as to be able to monitor the presence of ships in Benoa waters, the Lombok Strait and Nusa Penida.
{"title":"RANCANG BANGUN ANTENA Yagi-LPDA PADA FREKUENSI 162 MHz UNTUK AIS PADA KAPAL LAUT DI PERAIRAN PULAU BALI","authors":"Putu Okta, Hadi Saputra, I. P. Ardana, N. Pramaita","doi":"10.24843/spektrum.2023.v10.i01.p7","DOIUrl":"https://doi.org/10.24843/spektrum.2023.v10.i01.p7","url":null,"abstract":"The role of the sea is very important as unifying the nation and the territory of Indonesia and consequently the Government is obliged to administer governance in the field of law enforcement both against threats of violations against the use of waters and to maintain and create shipping safety and security. One way to increase the ability of the apparatus and the government to monitor and secure the territory of the Unitary State of the Republic of Indonesia is to use the AIS (Automatic Identification System) system. This AIS is used to monitor the movement of ships and provide or receive information so that actions that can harm the Unitary State of the Republic of Indonesia can be prevented. Currently, ships in Indonesia are equipped with radar, but the scope of the radar emitted by Indonesian ships is still small and small. To overcome these problems the author wants to develop a thesis with the title \"YAGI-LPDA Antenna Design at 162 MHz Frequency for Automatic Identification System (AIS) on Ships in Bali Island Waters\" This antenna works by being connected to the AIS system at 162 MHz frequency which able to reach the presence of ships in the waters of the Bali Strait, Lombok Strait and its surroundings. The Yagi-LPDA antenna design prototype works in accordance with the antenna design in the MMANA-GAL software, namely in the form of an SWR with a value of 1.73, a gain of 8.12 dBi, and a radiation pattern that is unidirectional and during the ship monitoring process, the Yagi-LPDA antenna can be work well seen from the direction of the Yagi-LPDA antenna beam which is in the same direction and focused so as to be able to monitor the presence of ships in Benoa waters, the Lombok Strait and Nusa Penida.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74123896","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}
Pub Date : 2023-03-31DOI: 10.24843/spektrum.2023.v10.i01.p6
Boy Aribana Depari, Duman Care Khrisne, Putu Arya Mertasana
Bible is a Scripture that believed by Christians which used as foundation in religious life. Reading the Bible can be more enjoyable by combining text, images, and sound, namely by creating a visual novel game. This visual novel game can be made using Ren'py. By making this Visual Novel Game about the Bible, children can use games to learn about the Bible. The data in this study can be obtained through books, journals, and the internet which are related to the concepts and research methods being carried out. Later, the data used will be validated in advance by the religious leaders concerned so that they can provide support that the stories told in this study do not deviate from the original teachings. The secondary data used is in the form of reference images, illustrations, clip art, animation, video or audio for making visual novel games via the internet. The result of this research is a Storytelling-based Visual Novel Game, where the story is taken from the Gospel of Matthew. In black box testing, this visual novel game shows that all functionality works well. In system usability scale testing, this visual novel game is categorized as good because it has an average value of 75,625.
{"title":"RANCANG BANGUN STORYTELLING GAME VISUAL NOVEL ALKITAB INJIL MATIUS","authors":"Boy Aribana Depari, Duman Care Khrisne, Putu Arya Mertasana","doi":"10.24843/spektrum.2023.v10.i01.p6","DOIUrl":"https://doi.org/10.24843/spektrum.2023.v10.i01.p6","url":null,"abstract":"Bible is a Scripture that believed by Christians which used as foundation in religious life. Reading the Bible can be more enjoyable by combining text, images, and sound, namely by creating a visual novel game. This visual novel game can be made using Ren'py. By making this Visual Novel Game about the Bible, children can use games to learn about the Bible. The data in this study can be obtained through books, journals, and the internet which are related to the concepts and research methods being carried out. Later, the data used will be validated in advance by the religious leaders concerned so that they can provide support that the stories told in this study do not deviate from the original teachings. The secondary data used is in the form of reference images, illustrations, clip art, animation, video or audio for making visual novel games via the internet. The result of this research is a Storytelling-based Visual Novel Game, where the story is taken from the Gospel of Matthew. In black box testing, this visual novel game shows that all functionality works well. In system usability scale testing, this visual novel game is categorized as good because it has an average value of 75,625.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79655202","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}
Pub Date : 2023-03-31DOI: 10.24843/spektrum.2023.v10.i01.p2
Ketut Bagus, Bayu Sanjaya, I. Made, Oka Widyantara, I. Komang, Djuni Hartawan
The existence of a radio frequency spectrum is regulated by the state as stated in Government Regulation number 53 of 2000, which is a limited natural resource that has strategic value in the operation of telecommunications. And the utilization of the radio frequency spectrum as a natural resource needs to be carried out in an orderly, efficient and appropriate manner so as not to cause harmful interference. Denpasar Class I Radio Frequency Spectrum Monitoring Center (Balmon Denpasar) as one of the UPT (Technical Service Units) of the Directorate General of SDDPI has the task of carrying out supervision and control in the field of radio frequency spectrum use in the Bali region. This study aims to be able to carry out supervision and observation of the radio frequency spectrum through observation (Ocupansy). Seeing the scope of the existing problems, this practical work report will provide the following problem boundaries: Observation of the occupation of the radio frequency spectrum through observation, measurement of technical parameters and law enforcement. There are complaints of disturbances on the radio frequency 5625 MHz for weather radar by the Meteorology, Climatology and Geophysics Agency (BMKG) Region III Denpasar caused by the use of the 5 GHz band frequency by ISPs using wireless LAN.
{"title":"PENANGGANAN GANGGUAN FREKUENSI RADIO RADAR CUACA BMKG WILAYAH III DENPASAR PADA PITA FREKUENSI 5 GHz","authors":"Ketut Bagus, Bayu Sanjaya, I. Made, Oka Widyantara, I. Komang, Djuni Hartawan","doi":"10.24843/spektrum.2023.v10.i01.p2","DOIUrl":"https://doi.org/10.24843/spektrum.2023.v10.i01.p2","url":null,"abstract":"The existence of a radio frequency spectrum is regulated by the state as stated in Government Regulation number 53 of 2000, which is a limited natural resource that has strategic value in the operation of telecommunications. And the utilization of the radio frequency spectrum as a natural resource needs to be carried out in an orderly, efficient and appropriate manner so as not to cause harmful interference. Denpasar Class I Radio Frequency Spectrum Monitoring Center (Balmon Denpasar) as one of the UPT (Technical Service Units) of the Directorate General of SDDPI has the task of carrying out supervision and control in the field of radio frequency spectrum use in the Bali region. This study aims to be able to carry out supervision and observation of the radio frequency spectrum through observation (Ocupansy). Seeing the scope of the existing problems, this practical work report will provide the following problem boundaries: Observation of the occupation of the radio frequency spectrum through observation, measurement of technical parameters and law enforcement. There are complaints of disturbances on the radio frequency 5625 MHz for weather radar by the Meteorology, Climatology and Geophysics Agency (BMKG) Region III Denpasar caused by the use of the 5 GHz band frequency by ISPs using wireless LAN.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89285189","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}
Pub Date : 2023-03-31DOI: 10.24843/spektrum.2023.v10.i01.p8
Kenny Angel Manik, W. G. Ariastina, I. A. Dwi Giriantari
Indonesia have potential sunshine over year, it makes indoensia has a large source of renewable energy. However, renewable energy usage is very low. One of the renewable energy is solar power plants (PLTS). Medan City is one of the highly populated cities and it makes Medan city very limited land to build PLTS, and the solution is to build rooftop PLTS. Therefore, this research discusses the planning of PLTS on the roof of the Manna Helvetai Indonesian Methodist Church Building. The design of this PLTS is simulated using the Helioscope simulator. Solar modules are installed as many as 35 pieces and have 1 inverter with a capacity of 20 kW and produce potential energy of 15.8 kWp. Based on the results of the rooftop solar power plant design and the results of the calculation of electrical energy production, it can be analyzed that the economic development of rooftop solar power plants is considered feasible because it meets the criteria of Net Present Value (NPV) greater than zero, namely Rp 44,638,904 and Benefit-Cost Ratio (B-CR) greater than one, namely 1.19 and Discounted Payback Period (DPP) which is reached at the life of the solar power plant.
{"title":"RANCANGAN PLTS ATAP GEDUNG GEREJA METHODIST INDONESIA MANNA HELVETIA","authors":"Kenny Angel Manik, W. G. Ariastina, I. A. Dwi Giriantari","doi":"10.24843/spektrum.2023.v10.i01.p8","DOIUrl":"https://doi.org/10.24843/spektrum.2023.v10.i01.p8","url":null,"abstract":"Indonesia have potential sunshine over year, it makes indoensia has a large source of renewable energy. However, renewable energy usage is very low. One of the renewable energy is solar power plants (PLTS). Medan City is one of the highly populated cities and it makes Medan city very limited land to build PLTS, and the solution is to build rooftop PLTS. Therefore, this research discusses the planning of PLTS on the roof of the Manna Helvetai Indonesian Methodist Church Building. The design of this PLTS is simulated using the Helioscope simulator. Solar modules are installed as many as 35 pieces and have 1 inverter with a capacity of 20 kW and produce potential energy of 15.8 kWp. Based on the results of the rooftop solar power plant design and the results of the calculation of electrical energy production, it can be analyzed that the economic development of rooftop solar power plants is considered feasible because it meets the criteria of Net Present Value (NPV) greater than zero, namely Rp 44,638,904 and Benefit-Cost Ratio (B-CR) greater than one, namely 1.19 and Discounted Payback Period (DPP) which is reached at the life of the solar power plant.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74963909","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}
Pub Date : 2023-03-31DOI: 10.24843/spektrum.2023.v10.i01.p5
Laili Asdiyan, Salsabila Ayu, I. Ayu, Dwi Giriantari, N. Setiawan, I. N. Setiawan
The implementation of PLTS as the utilization of EBT in Indonesia is still being developed. Government policy through KEN and RUEN targets a national PLTS capacity of 6.5 GW in 2025 and 45 GW in 2050. The PLTS system is implemented from the smallest scale, namely residential, with a new challenge, namely to maintain the performance of the PLTS system in good condition. The object of this research was carried out on an 11.2 kWp on-grid rooftop PV mini-grid system at the Bukit Gading Mediterania Residential. The performance of this rooftop PV system was analyzed using the PVsyst software to determine the potential for electricity production, then calculated the PV system performance parameters such as Yield Factor (Yf) , Yield Reference (Yr), Performance Ratio (PR) and Capacity Utilization Factor (CUF) of PLTS within one year of operation starting June 2021 – May 2022, which is then compared with the results of electricity production and the performance parameters of the PLTS system during operation one year from June 2021 – May 2022. The real production value of the 11.2 kWp on-Grid rooftop PV system for a year is 13,809.6 kWh with performance parameters (Yf Factor), Yield Reference (Yr), Performance Ratio (PR ) and Capacity Utilization Factor (CUF)) respectively are 1233.0 kWh/kWp, 1699.7 kWh/kW, 72.4% and 14.1%. For the PVSyst simulation results, the annual potential of electrical energy from the 11.2 kWp on-grid rooftop PLTS system is 15,649 kWh with performance parameters (Yf), Yield Reference (Yr), Performance Ratio (PR) and Capacity Utilization Factor (Yf). CUF)) respectively were 1,397.23 kWh/kWp, 1,691.3 kWh/kW, 82.6% and 16%.
{"title":"ANALISIS UNJUK KERJA PEMBANGKIT LISTRIK TENAGA SURYA (PLTS) ATAP ON-GRID 11,2 KWP DI RESIDENSIAL BUKIT GADING MEDITERANIA, JAKARTA UTARA","authors":"Laili Asdiyan, Salsabila Ayu, I. Ayu, Dwi Giriantari, N. Setiawan, I. N. Setiawan","doi":"10.24843/spektrum.2023.v10.i01.p5","DOIUrl":"https://doi.org/10.24843/spektrum.2023.v10.i01.p5","url":null,"abstract":"The implementation of PLTS as the utilization of EBT in Indonesia is still being developed. Government policy through KEN and RUEN targets a national PLTS capacity of 6.5 GW in 2025 and 45 GW in 2050. The PLTS system is implemented from the smallest scale, namely residential, with a new challenge, namely to maintain the performance of the PLTS system in good condition. The object of this research was carried out on an 11.2 kWp on-grid rooftop PV mini-grid system at the Bukit Gading Mediterania Residential. The performance of this rooftop PV system was analyzed using the PVsyst software to determine the potential for electricity production, then calculated the PV system performance parameters such as Yield Factor (Yf) , Yield Reference (Yr), Performance Ratio (PR) and Capacity Utilization Factor (CUF) of PLTS within one year of operation starting June 2021 – May 2022, which is then compared with the results of electricity production and the performance parameters of the PLTS system during operation one year from June 2021 – May 2022. The real production value of the 11.2 kWp on-Grid rooftop PV system for a year is 13,809.6 kWh with performance parameters (Yf Factor), Yield Reference (Yr), Performance Ratio (PR ) and Capacity Utilization Factor (CUF)) respectively are 1233.0 kWh/kWp, 1699.7 kWh/kW, 72.4% and 14.1%. For the PVSyst simulation results, the annual potential of electrical energy from the 11.2 kWp on-grid rooftop PLTS system is 15,649 kWh with performance parameters (Yf), Yield Reference (Yr), Performance Ratio (PR) and Capacity Utilization Factor (Yf). CUF)) respectively were 1,397.23 kWh/kWp, 1,691.3 kWh/kW, 82.6% and 16%.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88067638","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}
Pub Date : 2023-03-31DOI: 10.24843/spektrum.2023.v10.i01.p1
I. K. Ogik Parmana Putra, I. A. Dwi Giriantari, I. N. Setiawan
The utilization of renewable energy can be a solution to meet the current increasing demand for electrical energy in rural areas, one of which is the use of water energy with the development of PLTMH. In this study, the planning of a microhydro power plant was carried out in the irrigation canal of Angantaka Abiansemal Badung Village as a source of electrical energy to meet the needs of electrical energy. The Angantaka Village irrigation channel has a head 2,1 meters, a width of 1,95 meters, an average depth of 0,88 meters and a water discharge of 0,3045 m3/s. The PLTMH planning system uses a breastshot wheel type water wheel with an efficiency of 75% and TEK STC-5 kW 3 phase AC synchronous generator and a 6 kW ELC control panel. Planning for PLTMH on the irrigation canal of Angantaka Abiansemal Badung Village with a capacity of 3,76 kW / 4,70 kVA. The initial investment cost required is IDR. 72.055.375 with operational and maintenance cost of IDR. 720.553 in one year.
{"title":"STUDI PERENCANAAN PEMBANGKIT LISTRIK TENAGA MIKROHIDRO PADA SALURAN IRIGASI DESA ANGANTAKA ABIANSEMAL BADUNG","authors":"I. K. Ogik Parmana Putra, I. A. Dwi Giriantari, I. N. Setiawan","doi":"10.24843/spektrum.2023.v10.i01.p1","DOIUrl":"https://doi.org/10.24843/spektrum.2023.v10.i01.p1","url":null,"abstract":"The utilization of renewable energy can be a solution to meet the current increasing demand for electrical energy in rural areas, one of which is the use of water energy with the development of PLTMH. In this study, the planning of a microhydro power plant was carried out in the irrigation canal of Angantaka Abiansemal Badung Village as a source of electrical energy to meet the needs of electrical energy. The Angantaka Village irrigation channel has a head 2,1 meters, a width of 1,95 meters, an average depth of 0,88 meters and a water discharge of 0,3045 m3/s. The PLTMH planning system uses a breastshot wheel type water wheel with an efficiency of 75% and TEK STC-5 kW 3 phase AC synchronous generator and a 6 kW ELC control panel. Planning for PLTMH on the irrigation canal of Angantaka Abiansemal Badung Village with a capacity of 3,76 kW / 4,70 kVA. The initial investment cost required is IDR. 72.055.375 with operational and maintenance cost of IDR. 720.553 in one year.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85971938","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}
Pub Date : 2022-12-19DOI: 10.24843/spektrum.2022.v09.i04.p1
Komang Gede Widi Adnyana, N. Pramaita, I. M. Oka Widyantara
Multipath and multi-user interference are the main challenges in wireless communication systems. This has become a driving force for the development of data transmission technology that is focused to overcome these problems, one of which is spread spectrum. Spread spectrum is applied to CDMA technology which has the limitations of MAI, so a spreading code is required with specifications that have a very low cross-correlation value as in the orthogonal m-sequence code. In this study, simulate the orthogonal m-sequence code with a length of 8 chips on a multipath fading channel using the Direct Sequence Spread Spectrum system with aims of assessing the performance of the orthogonal m-sequence code on a multipath fading channel, based on the effect of changes in the number of multipath components. The research method used is a Monte Carlo simulation on simulink with the output data in the form of a graph of the comparison value of BER with Eb/No. The results show that on the flat fading channel with the number of components multipath 1, the BER value of the simulation results is in accordance with the BER theory so that the simulation is valid and can be applied to frequency selective fading channels. In the frequency selective fading channel with the number of multipath components 4,6, and 8, the best performance was shown in the multipath 4 component with the smallest BER value, this was influenced by the ACF and CCF values so that the multipath 4 component had the lowest ISI and interference between users.
{"title":"UNJUK KERJA KODE ORTHOGONAL M-SEQUENCE DALAM SISTEM DIRECT SEQUENCE SPREAD SPECTRUM MELALUI KANAL MULTIPATH FA","authors":"Komang Gede Widi Adnyana, N. Pramaita, I. M. Oka Widyantara","doi":"10.24843/spektrum.2022.v09.i04.p1","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i04.p1","url":null,"abstract":"Multipath and multi-user interference are the main challenges in wireless communication systems. This has become a driving force for the development of data transmission technology that is focused to overcome these problems, one of which is spread spectrum. Spread spectrum is applied to CDMA technology which has the limitations of MAI, so a spreading code is required with specifications that have a very low cross-correlation value as in the orthogonal m-sequence code. In this study, simulate the orthogonal m-sequence code with a length of 8 chips on a multipath fading channel using the Direct Sequence Spread Spectrum system with aims of assessing the performance of the orthogonal m-sequence code on a multipath fading channel, based on the effect of changes in the number of multipath components. The research method used is a Monte Carlo simulation on simulink with the output data in the form of a graph of the comparison value of BER with Eb/No. The results show that on the flat fading channel with the number of components multipath 1, the BER value of the simulation results is in accordance with the BER theory so that the simulation is valid and can be applied to frequency selective fading channels. In the frequency selective fading channel with the number of multipath components 4,6, and 8, the best performance was shown in the multipath 4 component with the smallest BER value, this was influenced by the ACF and CCF values so that the multipath 4 component had the lowest ISI and interference between users.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88239013","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}
Pub Date : 2022-12-19DOI: 10.24843/spektrum.2022.v09.i04.p2
Arzalia Khairunnisa Yasmine, N. Pramaita, N. Wirastuti
Improved wireless communication system generate the various advanced technologies, one of which is spread spectrum technique. This technique working by multiplying dots bits information which have a large period with spreading code that have a smaller periode, which makes bit periode will follow the code periode. In order to maximize performance of this technique, an efficient code is required to reduce the occurrence of interference. The purpose of this study was to see how the variation of multipath components affected the work of the orthogonal gold code. This study compares BER vs. Eb/No for multipath components 10, 15, and 20 using code length 32, 8 users, and BPSK modulation. The multipath component 10 exhibits the best BER value, which is impacted by the degree of interference indicated by the size of the ACF value. and CCF on a non-zero shift.
{"title":"DESAIN SIMULASI PERFORMANSI KODE ORTHOGONAL GOLD PADA KANAL MULTIPATH FADING","authors":"Arzalia Khairunnisa Yasmine, N. Pramaita, N. Wirastuti","doi":"10.24843/spektrum.2022.v09.i04.p2","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i04.p2","url":null,"abstract":"Improved wireless communication system generate the various advanced technologies, one of which is spread spectrum technique. This technique working by multiplying dots bits information which have a large period with spreading code that have a smaller periode, which makes bit periode will follow the code periode. In order to maximize performance of this technique, an efficient code is required to reduce the occurrence of interference. The purpose of this study was to see how the variation of multipath components affected the work of the orthogonal gold code. This study compares BER vs. Eb/No for multipath components 10, 15, and 20 using code length 32, 8 users, and BPSK modulation. The multipath component 10 exhibits the best BER value, which is impacted by the degree of interference indicated by the size of the ACF value. and CCF on a non-zero shift.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88293922","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}
Pub Date : 2022-12-19DOI: 10.24843/spektrum.2022.v09.i04.p3
Komang Edy Surya Prabowo, Y. Divayana, Pratolo Rahardjo
The Indonesian Wheeled Football Robot Contest (KRSBI Beroda) is one of the divisions of the Indonesian Robot Contest (KRI). At KRSBI Beroda robots are expected to be able to move automatically by using the Base Station as a communication center between robots in the same team. Base Station has a function to forward orders from the referee or RefBox (Referee Box) to the robot. This study aims to add features to the Base Station by displaying the position of two robots in the field in animation using the multi-thread method to facilitate strategy formulation. The result is that the Base Station that is made can display the position of two robots in the field without any errors.
{"title":"PERANCANGAN APLIKASI BASE STATION DALAM SISTEM KOORDINASI ROBOT SEPAK BOLA BERODA DENGAN MULTI THREAD","authors":"Komang Edy Surya Prabowo, Y. Divayana, Pratolo Rahardjo","doi":"10.24843/spektrum.2022.v09.i04.p3","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i04.p3","url":null,"abstract":"The Indonesian Wheeled Football Robot Contest (KRSBI Beroda) is one of the divisions of the Indonesian Robot Contest (KRI). At KRSBI Beroda robots are expected to be able to move automatically by using the Base Station as a communication center between robots in the same team. Base Station has a function to forward orders from the referee or RefBox (Referee Box) to the robot. This study aims to add features to the Base Station by displaying the position of two robots in the field in animation using the multi-thread method to facilitate strategy formulation. The result is that the Base Station that is made can display the position of two robots in the field without any errors.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89332109","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}
Pub Date : 2022-12-19DOI: 10.24843/spektrum.2022.v09.i04.p5
Diky Wahyu Kusuma Budi, Rukmi Sari Hartati, I. G. Dyana Arjana
Monitoring temperature and humidity in cold storage is very important to prevent damage to food raw materials. Checking the temperature in the cold storage is carried out every 4 hours with the results manually written on the log sheet by the working staff and also sometimes there are staff who do not close the cold storage door tightly so that it causes an increase in temperature. Therefore an IoT-based cold storage temperature monitoring system is created using Wemos D1 R2 in real time which is very necessary. The design of this prototype uses hardware, namely the WeMos D1 R2 microcontroller because it is based on ESP8266 which can be connected to WiFi, DHT22 temperature sensor, and HC-SR501 PIR sensor. The software used is blynk and google spreadsheet. The results of this prototype design are being able to read the cold storage temperature and humidity properly which can be seen in the blynk application on a smartphone by displaying the temperature and humidity values. This prototype also has a feature that sends notifications to smartphones when the temperature is read more than 5°C and has temperature data stored on Google spreadsheets. The conclusion of this study has succeeded in designing and making a prototype of an IoT-based cold storage temperature monitoring system. The testing of the prototype can work well. The results of applying the prototype to cold storage Room 21 obtained an average temperature of 2.9°C and an average humidity of 86%.
{"title":"RANCANG BANGUN SISTEM MONITORING SUHU COLD STORAGE BERBASIS IOT MENGGUNAKAN WEMOS D1 R2 DI PT. AEROFOOD ACS DENPASAR","authors":"Diky Wahyu Kusuma Budi, Rukmi Sari Hartati, I. G. Dyana Arjana","doi":"10.24843/spektrum.2022.v09.i04.p5","DOIUrl":"https://doi.org/10.24843/spektrum.2022.v09.i04.p5","url":null,"abstract":"Monitoring temperature and humidity in cold storage is very important to prevent damage to food raw materials. Checking the temperature in the cold storage is carried out every 4 hours with the results manually written on the log sheet by the working staff and also sometimes there are staff who do not close the cold storage door tightly so that it causes an increase in temperature. Therefore an IoT-based cold storage temperature monitoring system is created using Wemos D1 R2 in real time which is very necessary. The design of this prototype uses hardware, namely the WeMos D1 R2 microcontroller because it is based on ESP8266 which can be connected to WiFi, DHT22 temperature sensor, and HC-SR501 PIR sensor. The software used is blynk and google spreadsheet. The results of this prototype design are being able to read the cold storage temperature and humidity properly which can be seen in the blynk application on a smartphone by displaying the temperature and humidity values. This prototype also has a feature that sends notifications to smartphones when the temperature is read more than 5°C and has temperature data stored on Google spreadsheets. The conclusion of this study has succeeded in designing and making a prototype of an IoT-based cold storage temperature monitoring system. The testing of the prototype can work well. The results of applying the prototype to cold storage Room 21 obtained an average temperature of 2.9°C and an average humidity of 86%.","PeriodicalId":30870,"journal":{"name":"Jurnal Ilmiah Spektrum","volume":"517 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75244352","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}
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