Jurnal Elektronika dan Telekomunikasi最新文献_第6页

Binary Template Matching for Morphological Dilation Enhancement in Navigation Radar Imaging 导航雷达成像中用于形态学扩展增强的二元模板匹配

Jurnal Elektronika dan Telekomunikasi Pub Date : 2018-12-28 DOI: 10.14203/jet.v18.60-66

O. Heriana, T. Praludi, C. Wael

{"title":"Binary Template Matching for Morphological Dilation Enhancement in Navigation Radar Imaging","authors":"O. Heriana, T. Praludi, C. Wael","doi":"10.14203/jet.v18.60-66","DOIUrl":"https://doi.org/10.14203/jet.v18.60-66","url":null,"abstract":"Radar imaging system is strongly influenced by other supporting systems. There is a motor system that provides angular information to the display system, and Digital Signal Processing (DSP) system that provides the main information for radar imaging. The new approach, we substitute a DC servo motor with a DC stepper motor as radar antenna rotator in our navigation radar system development. Different from the use of servo motors that can provide angle movements smoothly, the new motor system provides angle information of 0.56 degrees in every step, results in empty pixel gaps in every 0.56 degrees in radar Plan Position Indicator (PPI) image. The width of the empty pixel gaps becomes wider when the cell array of raw data is increasing regarding the image plotting process. In this paper, we proposed a new morphological dilation method to the radar raw data based on binary template matching to accommodate the various width of empty pixel gaps before the radar raw data are plotted into the radar PPI image. By this method, the morphological dilation will only be applied to the raw data that meet the same criteria as the binary template. Otherwise, the raw data will be left as they are. The result shows that there is 150.52% pixel data addition in the empty pixel gaps from the original image, and 48.44% increase of the morphological dilation without binary template matching method. ","PeriodicalId":32393,"journal":{"name":"Jurnal Elektronika dan Telekomunikasi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42243319","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

Rotational Speed Control of Brushless Dc Motor Using Genetic Algorithm Optimized PD Controller 基于遗传算法优化PD控制器的无刷直流电机转速控制

Jurnal Elektronika dan Telekomunikasi Pub Date : 2018-12-28 DOI: 10.14203/JET.V18.75-80

R. A. Ardiansyah, E. Yazid

引用次数: 1

Fractional-N PLL Synthesizer for FMCW Signal Generator with Dual-Mode Modulation Pattern 双模调制模式FMCW信号发生器的分数n锁相环合成器

Jurnal Elektronika dan Telekomunikasi Pub Date : 2018-12-28 DOI: 10.14203/JET.V18.46-52

R. Indrawijaya, Ros Sariningrum, B. Sukoco, Dadan Muliawandana

引用次数: 1

Performance Evaluation of Distribution Node in Case of LEACH Implementation on Wireless Sensor Network 无线传感器网络中LEACH实现情况下分布节点性能评价

Jurnal Elektronika dan Telekomunikasi Pub Date : 2018-12-28 DOI: 10.14203/jet.v18.67-74

B. Prakoso, Ahmad Zainudin, P. Kristalina, R. F. Azhar

{"title":"Performance Evaluation of Distribution Node in Case of LEACH Implementation on Wireless Sensor Network","authors":"B. Prakoso, Ahmad Zainudin, P. Kristalina, R. F. Azhar","doi":"10.14203/jet.v18.67-74","DOIUrl":"https://doi.org/10.14203/jet.v18.67-74","url":null,"abstract":"Wireless sensor networks consisting of sensor nodes can be used as an effective tool for collecting data in various situations. Nodes are usually placed randomly in an area to perform sensing and monitor various parameters related to environmental conditions in various locations. One of the major problems in wireless sensor networks is developing energy-efficient routing protocols that have a significant impact on the overall life of sensor networks so it is important to make energy savings in these limited energy sources to extend network life. This paper proposes a hardware design and Low-Energy Adaptive Clustering Hierarchy (LEACH) routing protocol configuration for power saving by utilizing cluster head selection mechanism. The cluster head selection process is performed periodically based on LEACH algorithm enables the node to have the best lifetime responsible for communication between the nodes and the server as well as the effort to save energy consumption of limited energy sources to extend network life. So that makes the process of sending information more effective and optimal. The system has been able to display data information along with the position of nodes in the web server with an average of 42 seconds of computing time in a rotation of the system so that it can be done 85 times in 1 hour. The system is able to provide real-time information with a throughput of more than 1.052 Kbps and packet loss of no more than 6.7%. In addition, energy savings can up to 6.5% of the existing energy in a lithium battery.","PeriodicalId":32393,"journal":{"name":"Jurnal Elektronika dan Telekomunikasi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44874204","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

Polyaniline as Novel Polymer Materials for Dry Electrode- Based Electrocardiography (ECG) 聚苯胺作为新型高分子材料用于干电极心电图

Jurnal Elektronika dan Telekomunikasi Pub Date : 2018-08-31 DOI: 10.14203/JET.V18.1-8

Jeffry Omega Prima, B. Pamungkas, Nugraha, Suprijanto

引用次数: 1

Degradation of Shielding Performance of Metallic Sheet due to Aperture Configuration and Dimension at 2.4 GHz 2.4 GHz时孔径结构和尺寸对金属薄板屏蔽性能的影响

Jurnal Elektronika dan Telekomunikasi Pub Date : 2018-08-31 DOI: 10.14203/JET.V18.9-14

A. Wardoyo, M. Alaydrus

{"title":"Degradation of Shielding Performance of Metallic Sheet due to Aperture Configuration and Dimension at 2.4 GHz","authors":"A. Wardoyo, M. Alaydrus","doi":"10.14203/JET.V18.9-14","DOIUrl":"https://doi.org/10.14203/JET.V18.9-14","url":null,"abstract":"The increasing demand on wireless connectivity has opened new and modern communication systems. Many wireless systems, for example Wireless Fidelity (Wi-Fi), Bluetooth, ZigBee, share the unlicensed frequency region around 2.4 GHz. Due to intensive application of Wi-Fi systems, there are certain disturbance potentials observed. The Wi-Fi signals cause interference to ZigBee networks which are used for smart grid applications. In this work, the shielding effectiveness of a metallic enclosure with several apertures is studied. Based on analytical expression from the literature, the shielding effectiveness by varying the sheet thickness, number of apertures, and aperture patterns is calculated. Several measurements of Received Signal Strength Indicator (RSSI) are carried out. The measurements are conducted on a shielded room to isolate the measurement from other unknown signal sources. The calculation and measurement of shielding effectiveness confirmed that more apertures on a shielding sheet will reduce the Shielding Effectiveness (SE). SE for one aperture for the case sheet thickness 0.7 mm and diameter of 12 mm reduce from 46.28 dB to 14.24 dB for 6 apertures. Bigger aperture diameters will also degrade the SE from 46.28 dB to 5.27 dB for aperture diameter 24 mm. The same condition can be concluded for the thickness 1.4 mm for aperture diameter of 12 mm. However a slightly different measurement results are obtained for the thickness 1.4 mm and aperture diameter of 24 mm. The thickness plays a significant role to attenuate the wave, so that SE is bigger than the calculated one.","PeriodicalId":32393,"journal":{"name":"Jurnal Elektronika dan Telekomunikasi","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66752487","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

Improvement of DSOGI PLL Synchronization Algorithm with Filter on Three-Phase Grid-connected Photovoltaic System 带滤波器的三相光伏并网系统DSOGI锁相环同步算法改进

Jurnal Elektronika dan Telekomunikasi Pub Date : 2018-08-31 DOI: 10.14203/JET.V18.35-45

R. Izah, S. Subiyanto, D. Prastiyanto

{"title":"Improvement of DSOGI PLL Synchronization Algorithm with Filter on Three-Phase Grid-connected Photovoltaic System","authors":"R. Izah, S. Subiyanto, D. Prastiyanto","doi":"10.14203/JET.V18.35-45","DOIUrl":"https://doi.org/10.14203/JET.V18.35-45","url":null,"abstract":"Synchronous Reference Frame Phase Locked Loop (SRF PLL) has been widely used for synchronization three-phase grid-connected photovoltaic (PV) system. On the grid fault, SRF PLL distorted by negative sequence component and grid harmonic that caused an error in estimating parameter because of ripple and oscillation. This work combined SRF PLL with Dual Second Order Generalized Integrator (DSOGI) and filter to minimize ripple and minimize oscillation in the phase estimation and frequency estimation. DSOGI was used for filtering and obtaining the 90o shifted versions from the vαβ signals. These signals (vαβ) were generated from three phase grid voltage signal using Clarke transform. The vαβ signal was the inputs to the positive-sequence calculator (PSC). The positive-sequence vαβ was transformed to the dq synchronous reference frame and became an input to SRF-PLL to create the estimation frequency. This estimation frequency from SRF PLL was filtered by the low-pass filter to decrease grid harmonic. Moreover, the output of low-pass filter was a frequency adaptive. The performance of DSOGI PLL with filter is compared with DSOGI PLL, SRF PLL, and IEEE standard 1547(TM)-2003. The improvement of DSOGI PLL with filter gave better performances than DSOGI PLL and SRF PLLbecause it minimized ripples and oscillations in the phase and frequency estimations.","PeriodicalId":32393,"journal":{"name":"Jurnal Elektronika dan Telekomunikasi","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41654097","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

A Comparison of the Utilization of Carbon Nanopowder and Activated Carbon as Counter Electrode for Monolithic Dye-Sensitized Solar Cells (DSSC) 纳米碳粉与活性炭对电极用于单片染料敏化太阳能电池(DSSC)的比较

Jurnal Elektronika dan Telekomunikasi Pub Date : 2018-08-31 DOI: 10.14203/JET.V18.15-20

Z. Mubarak, N. Nursam, S. Shobih, J. Hidayat, D. Tahir

{"title":"A Comparison of the Utilization of Carbon Nanopowder and Activated Carbon as Counter Electrode for Monolithic Dye-Sensitized Solar Cells (DSSC)","authors":"Z. Mubarak, N. Nursam, S. Shobih, J. Hidayat, D. Tahir","doi":"10.14203/JET.V18.15-20","DOIUrl":"https://doi.org/10.14203/JET.V18.15-20","url":null,"abstract":"Monolithic design is one of the most promising dye-sensitized solar cell (DSSC) architectures to develop, because it allows the elimination of one conductive substrate and offers the possibility for printing layer-by-layer of the materials that made up its structure. In this study, titanium dioxide-based monolithic type DSSCs were fabricated on a single fluorine-doped transparent oxide coated glass with TiO2 as photoanode and porous ZrO2 as spacer. The type of the carbon material used as the composite paste for the counter electrode was varied to see the effect on the solar cell efficiency. Four-point probes measurement revealed that the resistivity of the carbon layer synthesized using activated carbon exhibited slightly higher conductivity with a sheet resistance of 10.70 Ω/sq and 11.09 Ω/sq for activated carbon and carbon nanopowder, respectively. The efficiency of DSSC that uses activated carbon as counter electrode was higher (i.e. 0.221%) than the DSSC with carbon nanopowder (i.e. 0.005%). The better performance of DSSC with activated carbon as a counter electrode was due to its better conductivity and higher surface area compared to those of carbon nanopowder.","PeriodicalId":32393,"journal":{"name":"Jurnal Elektronika dan Telekomunikasi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49242143","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: 7

Analysis of Thermal Treatment Zirconia as Spacer Layer on Dye-Sensitized Solar Cell (DSSC) Performance with Monolithic Structure 热处理氧化锆作为间隔层对单片结构染料敏化太阳能电池(DSSC)性能的影响

Jurnal Elektronika dan Telekomunikasi Pub Date : 2018-08-31 DOI: 10.14203/JET.V18.21-26

C. Anwar, E. Rosa, S. Shobih, J. Hidayat, D. Tahir

{"title":"Analysis of Thermal Treatment Zirconia as Spacer Layer on Dye-Sensitized Solar Cell (DSSC) Performance with Monolithic Structure","authors":"C. Anwar, E. Rosa, S. Shobih, J. Hidayat, D. Tahir","doi":"10.14203/JET.V18.21-26","DOIUrl":"https://doi.org/10.14203/JET.V18.21-26","url":null,"abstract":"Monolithic dye-sensitized solar cells (DSSC) offer the prospect of lower material cost and require a simpler manufacturing process compared with conventional DSSC. Fabricated on a single fluorine tin oxide (FTO) glass substrate consists of a nanoporous TiO2 photoanode layer, a ZrO2 spacer layer, a carbon counter electrode layer, a dye, and an electrolyte. The spacer layer on the monolithic DSSC serves as electrolyte storage and insulating layer to separate between photoanode and counter electrode. Zirconia is often used as a spacer because it has high temperature resistant properties, high dielectric constant and adhesive as an insulator that has band gap between 5-6 eV. The effects of the thermal treatment of zirconia layer as a spacer electrolyte on the performance of monolithic DSSC have been investigated. The cell’s performance increases with the sintering temperature as well as indicated by the decreased in particle size and increased in quantum efficiency in the absorption region of the titania layer. Co-sintering treatment tends to drastically reduce cell’s performance. The highest performance was obtained at a temperature sintering of 500o C with an PCE of 0.22%, Isc = 0.16 mA and Voc = 0.71 V.","PeriodicalId":32393,"journal":{"name":"Jurnal Elektronika dan Telekomunikasi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42913781","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

Analysis of Non Linear Frequency Modulation (NLFM) Waveforms for Pulse Compression Radar 脉冲压缩雷达非线性调频波形分析

Jurnal Elektronika dan Telekomunikasi Pub Date : 2018-08-31 DOI: 10.14203/JET.V18.27-34

Muhamad Ridwan Widyantara, Sugihartono, F. Y. Suratman, S. Widodo, P. Daud

{"title":"Analysis of Non Linear Frequency Modulation (NLFM) Waveforms for Pulse Compression Radar","authors":"Muhamad Ridwan Widyantara, Sugihartono, F. Y. Suratman, S. Widodo, P. Daud","doi":"10.14203/JET.V18.27-34","DOIUrl":"https://doi.org/10.14203/JET.V18.27-34","url":null,"abstract":"Non Linear Frequency Modulation (NLFM) method can suppress the peak sidelobe level without additional windowing function. NLFM doesn’t require any weighting function because it has inbuilt one. NLFM has a variable frequency deviation function due to the relation between frequency and time of the signal which is not linear so that it is possible to suppress of peak sidelobe level. This paper studies the characteristic of various NLFM waveform, such as NLFM Tri Stage Piece Wise (TSPW), NLFM S, and NLFM Taylor. The study of Pulse Compression of NLFM waveform consists of three aspects. First, analysis of pulse compression performance. Second, analysis of background noise. Last, analysis of Doppler effects. The simulation is done using Matlab software. The lowest value Peak Sidelobe Level (PSL)of NLFM TSPW is about -20 dB while NLFM S and NLFM Taylor are about -32 dB and -39 dB. Additive White Gaussian Noise (AWGN) and Doppler Effect influenced the value of PSL for each NLFM waveform. NLFM Taylor has the best NLFM waveform when the Doppler Effect and AWGN cause the value of PSL become high. Comparison between NLFM Taylor and Linear Frequency Modulation(LFM) is done in radar surveillance applications to analyze the detectability performance where the condition of Radar Cross Section (RCS) for each target has different significant value. The three targets are commercial airplanes, helicopter and fighter. For detectability performance, NLFM Taylor can detect more clearly than LFM conventional.","PeriodicalId":32393,"journal":{"name":"Jurnal Elektronika dan Telekomunikasi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47512330","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: 7