Hasil Pencarian  ::  Simpan CSV :: Kembali

"For the right person, a career in media sales can be glamorous, rewarding, and lucrative. But without the right guidance, it can also be challenging. Author Paul Weyland has decades of experience working with local direct clients. Now, in "Successful Local Broadcast Sales" he shares his hard-won wisdom, showing television, radio, and cable salespeople how to get more sales. Honest, practical, and accessible, this is the one handbook that shows novice and veteran salespeople how to thrive - not just survive - in the media business."

"ADS-B merupakan salah satu peralatan yang menjadi pelengkap peralatan radar yang bekerja pada frekuensi 1090 MHz agar dapat menjangkau daerah yang sulit karena letak geografis. Salah satu modul penyusun sistem peralatan ADS-B yaitu low noise amplifier (LNA). Untuk aplikasi radar ADS-B diperlukan LNA yang memiliki gain dan kestabilan yang tinggi dengan NF dan return loss yang rendah. Untuk memperoleh hal tersebut maka pada penelitian ini dirancang LNA menggunakan transistor FET-NE3210S01 dengan bias DC, VDS = 2 V dan ID = 10 mA agar memperoleh gain yang tinggi dengan noise figure rendah. Sementara itu, digunakan dual-stub pada rangkaian matching impedansinya untuk menurunkan nilai return loss dan VSWR. Hasil perancangan rangkaian LNA dengan single-stub matching memiliki keluaran gain (S21) = 17,081 dB, input koefisien pantul (S11) = 21.144 dB, noise figure = 1.954 dB, VSWR = 1,192 dan stability factor (K) = 1,7. Sementara itu, hasil perancangan rangkaian LNA dengan multi-stub matching memiliki keluaran lebih baik, yaitu gain (S21) = 20,59 dB, input koefisien pantul (S11) = 62,120 dB, noise figure = 0.787 dB, VSWR = 1,002 dan stability factor (K) = 1,17. Hasil perancangan dan simulasi rangkaian LNA dengan single-stub matching memiliki keluaran gain (S21) = 3,3 dB, input koefisien pantul (S11) = 6.3 dB, VSWR = 2.6.Sementara itu, hasil pengukuran rangkaian LNA dengan dual-stub matching memiliki keluaran lebih baik, yaitu gain (S21) = 5,97 dB, input koefisien pantul (S11) = 15.2 dB, VSWR = 1.5. Terlihat bahwa LNA dengan dual-stub matching memiliki hasil keluaran yang lebih baik, peningkatan gain dikarenakan penggunaan dual-stub matching sehingga terjadi penurunan koefisien pantul dan VSWR.

---

ADS-B is one of the tools to complement radar equipment that works at a frequency of 1090 MHz in order to reach difficult areas due to geographical location. One of the modules making up the ADS-B equipment system that is low noise amplifier (LNA). For radar applications ADS-B is required LNA has a gain and a high stability with NF and low return loss. To obtain the matter, in this study was designed LNA-NE3210S01 using FET transistors with a DC bias, VDS = 2 V and ID = 10 mA in order to obtain high gain with low noise figure.

Meanwhile, use the dual-stub impedance matching circuit to reduce the value of return loss and VSWR and used inter-stage matching in order to distribute power more optimal than the second transistor. The results of the LNA circuit design with single-stub matching has the output gain (S21) = 17.081 dB, input reflection coefficient (S11) = 21 144 dB, noise figure = 1954 dB, VSWR = 1.192 and stability factor (K) = 1.7. Meanwhile, the results of the LNA circuit design with multi-stub matching has a better output, the gain (S21) = 20.59 dB, input reflection coefficient (S11) = 62.120 dB, noise figure = 0787 dB, VSWR = 1.002 and stability factor (K) = 1.17.

The results of the LNA circuit design and simulation with a single-stub matching the output gain (S21) = 3.3 dB, input reflection coefficient (S11) = 3.6 dB, VSWR = 2.6.Sementara, the measurement results of LNA circuit with dual-stub matching has better output, namely the gain (S21) = 5.97 dB, input reflection coefficient (S11) = 2.15 dB, VSWR = 1.5. Seen that the LNA with dual-stub matching has a better outcome, increasing the gain due to the use of dual-stub matching, so there is a decrease the reflection coefficient and VSWR."

"Perkembangan industri kreatif media saat ini didukung oleh teknologi dan tak lepas kepentingan komersial. Era ini menjadi tantangan televisi publik melaksanakan pelayanan publik, independen, dan tanpa unsur komersial. Lembaga Penyiaran Publik TVRI yang tugasnya diatur dalam Undang-Undang Penyiaran. Kegigihan TVRI merebut penonton dari kanal swasta terus diuji.

---

The development of the creative media industry supported by technology and cannot be separated from commercial interest. In this modern era, it is a big challenge for public television to carry out an independent public service. As a public broadcasting, TVRI duties regulated in the Broadcasting Law. TVRI persistence in seizing audience attention continuously tested."

"Time synchronization is a vital process in wireless sensor networks, where energy sources are highly limited. In this work, we propose a broadcast-based skew correction technique that will improve both the accuracy and the lifetime of any time synchronization protocol that only corrects time offsets among sensor nodes. Using time information transmitted periodically by the root node, each client node can compensate its software clock frequency in real time after an initial offset correction. The experimental results show that a clock skew below 0.05 us/s can be consistently achieved with appropriate compensation parameters after the correction process is stabilized."

"Di dalam dunia penerbangan, penggunaan Automatic Dependant Surveillance Broadcast ADS-B sudah mulai menjadi standar. ADS-B memungkinkan penyebaran informasi lalu-lintas penerbangan dengan lebih efektif, biaya lebih rendah serta fleksibel dalam implementasinya. Di sisi lain kemajuan teknologi di bidang komunikasi yang menunjang penyebaran informasi ADS-B juga berkembang pesat. Named Data Networking NDN muncul sebagai alternatif baru untuk menggantikan komunikasi TCP/IP yang sudah jamak dipakai di seluruh dunia. NDN menawarkan fleksibilitas dan komunikasi secara content centric, artinya NDN tidak lagi menyandarkan urusan forwarding data ke lapisan TCP/IP namun ditangani oleh mekanisme pencarian rute menuju konten yang dituju menggunakan penamaan hierarkis yang serupa dengan konsep Uniform Resource Locator URL . Mekanisme ini mengeliminir proses pembacaan sampai lapisan-lapisan bawah saat proses forwarding, dan diharapkan meningkatkan performa transaksi data. Pada penelitian ini dilakukan transmisi data yang dihasilkan oleh sebuah source ADS-B melalui sebuah mock-up jaringan yang sudah diimplementasikan NDN di dalamnya. Kinerja sistem lalu dievaluasi melalui parameter round-trip-time dan packet loss untuk melihat apakah sudah sesuai dengan standar yang telah ditetapkan oleh otoritas penerbangan agar layak diimplementasi dalam kegiatan operasional dibandingkan dengan sistem yang menggunakan IP. Hasil evaluasi menunjukan bahwa ada penurunan performansi round-trip-time sebesar 34 dan packet-loss mencapai 7 dalam kondisi lalu-lintas jaringan idle.

---

In the aviation world, the use of Automatic Dependent Surveillance Broadcast ADS B has started to become a standard. ADS B allows the dissemination of flight traffic information more effectively, in lower costs and flexible implementation. On the other hand advances in technology in the field of communication that support the dissemination of information ADS B is also growing rapidly. Named Data Networking NDN emerged as a new alternative to replace the commonly used TCP IP communications around the world. NDN offers flexibility and content centric communication, meaning that NDN no longer relies on forwarding data to TCP IP layers but is handled by a route search mechanism toward the intended content using hierarchical naming similar to the Uniform Resource Locator URL concept. This mechanism eliminates the reading process to the lower layers during the forwarding process, and is expected to improve the performance of data transactions.

In this research, data transmission is generated by an ADS B source through a mock up network that already implemented NDN in it. System performance is then evaluated through round trip time and packet loss parameters to see if it meets the standards set by the aviation authority to be feasible to implement in operational activities compared to systems using IP. Evaluation results show that there is a 34 decrease of round trip time performance and packet loss reaches 7 in idle network traffic conditions."