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RANCANG BANGUN DUPLEXER PADA SYSTEM PEMANCAR DAN PENERIMA RADIO HYBRID CIGRA Choirul Rio Prabowo; Imam Ashar; Petrus Gunawan
Jurnal Telkommil Vol. 2 No. Mei (2021): Jurnal Telkommil
Publisher : Pustaka Poltekad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54317/kom.v2iMei.149

Abstract

Perkembangan teknologi saat ini sangatlah berkembang dengan pesat, komunikasi sangat penting dan dibutuhkan, Peneltian ini bertujuan untuk merancang bangun sebuah perangkat Duplexer yang bekerja pada band 900 MHz pada jaringan radio hybrid. Duplexer adalah perangkat yang menggunakan satu antena pada frekuensi yang berbeda. Pada penelitian ini menggunakan metode kuantitatif, karena hanya satu antenna yang dapat berkomunikasi antara dua HT, duplexer didesain menggunakan mikrostrip sebagai resonator. Komponen L dan C pada mikrostrip ini menggunakan teknik open circuit untuk kapasitor dan short circuit untuk induktor. Duplexer diperoleh dengan memanfaatkan respon frekuensi band stop filter (BSF). Frekuensi yang digunakan pada band 900 Mhz yang mana frekuensi uplink adalah 453,025 MHz – 463,025 MHz dan frekuensi downlink 458.025 MHz – 468.025 MHz.Hasil pengujian diperoleh redaman pada cut off mencapai 12 db. Redaman ini merupakan tingkat isolasi sinyal antara sinyal uplink dan downlink.
Study and Analysis of Docker Internal System Security From Docker Daemon Attack and DDOS on The Open Journal System Prabowo, Choirul Rio; Rohadi, Erfan; Irmanto, Dodo
JPUA: Jurnal Perpustakaan Universitas Airlangga: Media Informasi dan Komunikasi Kepustakawanan Vol. 14 No. 1 (2024): JANUARI - JUNI 2024
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jpua.v14i1.2024.61-68

Abstract

Introduction: The growing use of data centers encourages virtualization technology to become an alternative solution in virtualization to provide a dense environment that can be adjusted according to needs. In hypervisor-based virtualization technology in managing servers in the Open Journal System data center, network administrators must allocate resources that are large enough so that when developing web or mobile systems takes a long time, and in hypervisor-based virtualization techniques, they must have access to the host kernel. Purpose: Research on the attack model and vulnerabilities of the Docker internal security system on the Open Journal System from the Docker daemon attack and DDoS attacks when building and managing the Docker internal system. Method: This research begins with a literature study, network scope, system design, and system implementation based on plans that have been made, as well as testing, analysis, and concluding the tests that have been carried out. Finding: At the testing stage, the results obtained were the success of the Docker system in handling DDoS attacks and the success of securing the Docker Daemon from Docker Daemon attacks. Conclusion: The Docker Daemon Attack can occur by misconfiguring containers. This flaw allows an unauthorised party to take control of a container that has already been created. By gaining root access, attackers can perform various malicious activities within the container. Therefore, it is important to have an understanding and implementation of proper security practices in the management and configuration of Docker containers to reduce the risk of these types of attacks. Keyword:  Docker, Container, DDoS, Attack. ------------------------------------------ Studi dan Analisis Keamanan Sistem Internal Docker dari Docker Daemon Attack dan Ddos Pada Sistem Open Journal System Pendahuluan: Berkembangnya penggunaan data center ini mendorong teknologi virtualisasi menjadi salah satu alternatif solusi dalam virtualisasi untuk menyediakan lingkungan yang padat agar dapat disesuaikan sesuai kebutuhan. Pada teknologi virtualisasi berbasis hypervisor dalam pengelolaan server pada data Open Journal System, center administrator jaringan harus mengalokasikan resources yang cukup besar, sehingga ketika dilakukan development sistem web atau mobile membutuhkan waktu yang lama, serta pada teknik virtualisasi berbasis hypervisor harus memiliki akses ke kernel host. Tujuan: Meneliti model serangan dan kerentanan sistem keamanan internal Docker pada Open Journal System dari ancaman Docker Daemon Attack dan serangan DDoS pada saat membangun dan mengelola sistem internal Docker. Metode Penelitian: Penelitian ini dimulai dengan studi literatur, ruang lingkup jaringan, perancangan sistem, implementasi sistem berdasarkan rancangan yang telah dibuat, serta pengujian, analisis dan penarikan kesimpulan dari pengujian yang telah dilakukan. Hasil Penelitian: Pada tahap pengujian dilakukan hasil yang didapatkan yaitu keberhasilan sistem docker dalam menangani serangan DdoS serta keberhasilan pengamanan docker daemon dari serangan docker daemon attack. Kesimpulan: Serangan Docker Daemon dapat terjadi karena kesalahan konfigurasi container. Kelemahan ini memungkinkan pihak yang tidak berwenang untuk mengambil kendali atas container yang telah dibuat. Dengan mendapatkan akses root, penyerang dapat melakukan berbagai aktivitas berbahaya di dalam container. Oleh karena itu, penting untuk memiliki pemahaman dan penerapan praktik keamanan yang tepat dalam pengelolaan dan konfigurasi container Docker untuk mengurangi risiko jenis serangan ini. Kata Kunci: Docker, Container, DDoS, Attack.
Teknologi RANCANG BANGUN SISTEM TRACKER PADA ANTENA YAGI FREKUENSI 433 MHz BERBASIS ARDUINO UNTUK PENJEJAKAN MORTIR LATIH: Telekomunikasi Ibnu, Bunyamin; Ashar, Imam; Prabowo, Choirul Rio
Jurnal Telkommil Vol. 6 No. 1 (2025): Jurnal Telkommil
Publisher : Pustaka Poltekad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54317/kom.v6i1.601

Abstract

Penelitian ini bertujuan merancang dan membangun sistem pelacakan mortir latih menggunakan antena Yagi pada frekuensi 433 MHz berbasis Arduino. Metode yang digunakan adalah eksperimen untuk menguji hipotesis mengenai kemampuan sistem dalam mendeteksi dan melacak mortir latih. Penelitian ini dilakukan melalui tiga tahap: perancangan, implementasi, dan evaluasi. Pada tahap perancangan, desain antena Yagi, pemilihan komponen, dan perancangan rangkaian sistem ditentukan. Implementasi melibatkan penyusunan dan pengujian sistem pelacakan dengan Arduino sebagai pengontrol, yang mengarahkan antena menggunakan servo motor berdasarkan sinyal yang diterima. Evaluasi dilakukan dengan menguji akurasi sistem dalam melacak mortir latih. Hasil penelitian menunjukkan bahwa sistem dapat melacak pergerakan mortir dengan akurasi yang cukup baik meskipun ada keterlambatan respons saat mortir bergerak cepat dan gangguan sinyal yang mempengaruhi akurasi. Meskipun demikian, sistem ini terbukti efektif dan dapat dikembangkan lebih lanjut untuk meningkatkan kinerjanya, terutama dalam hal pengolahan sinyal dan jangkauan pelacakan.
Teknologi Automatic Spraying System for Plants based on Leaf Image Detection by Using Raspberry Pi Camera Model V2: Telekomunikasi Barokah, Ade; Rio Prabowo, Choirul
Jurnal Telkommil Vol. 6 No. 2 (2025): Jurnal Telkommil
Publisher : Pustaka Poltekad

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The utilization of automated systems to increase crop maintenance efficiency, especially in fertilizer and pesticide application, has been prompted by advancements in precision agriculture technology. Using a camera module as an automated spraying controller to detect leaf images is one creative method. The integration of the Raspberry Pi v2 Camera Module with digital image processing methods in automated spraying systems is the subject of a comprehensive review of earlier research presented in this article. Actuator control in the system, analysis of leaf detection techniques, and a review of recent journal literature are some of the techniques employed. The study's findings show that real-time implementation of this technique which includes color thresholding and texture analysis for leaf detection can be accomplished with good accuracy. The Raspberry Pi v2 Camera Module offers advantages in color image and easy integration with microcontroller. In conclusion, an automated spraying system based on leaf image detection shows great potential in reducing chemical waste and improving spraying precision, although challenges remain related to lighting conditions and crop types. Further research is needed to improve system performance under various field conditions.
Tecnology FPV Camera Gimbal Controller Design Synchronized with the SS2 Weapons Platform on an IMU-Based Quadcopter Drone : Telkommil Supadmana Muda , Nur Rachman; Rio Prabowo, Choirul
Jurnal Telkommil Vol. 6 No. 2 (2025): Jurnal Telkommil
Publisher : Pustaka Poltekad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54317/kom.v6i2.635

Abstract

The development of drone technology has driven innovation in the integration of surveillance and weapons systems. This research designs and builds a First Person View (FPV) camera gimbal controller system that can be synchronized directly with the movement of the NR version of the SS2 weapon platform on a quadcopter drone. This system utilizes an Inertial Measurement Unit (IMU) sensor to read the drone's orientation and adjust the gimbal position in real-time to maintain alignment with the target. Tests were conducted at various maneuver angles to verify the gimbal's accuracy, stability, and response to drone movements. The results show accurate synchronization with minimal latency. This controller system uses an STM32 microcontroller and an MPU-6050 IMU sensor as its main components, combined with precision servo motors for gimbal axis drive. The FPV camera is calibrated to remain focused on the SS2 weapon barrel in all orientation conditions. This system integration allows operators to monitor and accurately direct targets remotely via FPV video. Test data shows that the system's stability is maintained even under high vibration conditions and extreme movements. The implementation of this system has great potential for application in tactical military drone applications and security surveillance.
IMPLEMENTATION OF RGB COLOR SEGMENTATION SYSTEM ON DIGITAL IMAGERY FOR OCTAVE-BASED COLOR DOMINANCE CLASSIFICATION: Elkasista Dwi , Hendro; Maulana, Irfan Maulana; Prabowo, Choirul RiO
Elektronika Sistem Senjata Vol 6 No 2 (2025): Jurnal Elkasista
Publisher : Pustaka Poltekad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54317/elka.v6i2.580

Abstract

Abstract: A digital color image consists of three main components, namely red, green, and blue, known as the RGB color model. This study aims to implement a color segmentation method on digital images to classify color dominance using Octave application. The segmentation process is carried out by comparing the intensity of each color channel and producing three output images: red-dominant, green-dominant, and blue-dominant regions. The image was used for testing the effectiveness of color separation through logical masking. The results show that this method accurately isolates objects based on dominant colors and can be applied to various image processing tasks such as object tracking, color classification, and visual analysis. This research provides a foundation for developing simple yet effective computer vision systems