Rencana kegiatan selanjutnya sampai dengan akhir tahun 2012 adalah:
• Penyelesaian sertifikasi TKDN (tingkat komponen dalam negeri) dan kelaikan dari Dislitbang TNI‐AL
• Pembuatan/realisasi sistem mekanik antena.
• Perakitan dan pengetesan perangkat keras.
• Pemasangan modul2 antena.
• Pemasangan motor penggerak Radar.
• Pembuatan perangkat lunak (software).
• Pemasangan aksesoris termasuk power supply.
• Pengetesan dan setting antena.
• Integrasi software dan hardware.
• Pengetesan keseluruhan baik di laboratorium dan di lapangan.
IV. Kendala dan permasalahan
• Pemesanan komponen memakan waktu lama terutama yang dari USA (hampir 4
bulan).
• Keharusan lelang sehingga menghambat delivery dari komponen‐komponen impor.
Prosedur pengadaan ini mengakibatkan sebagian anggota tim Radar ‘menganggur’
karena menunggu datang‐nya komponen impor.
• Perlu tambahan SDM terutama untuk bidang software karena mengingat
banyaknya pekerjaan terkait Radar.
• Peralatan ukur untuk tes dilapangan masih terbatas seperti handheld spectrum
analyser dan signal generator.
• Perlu kerjasama kemitraan dimasa depan utk pemasangan Radar di daerah2
supaya bisa dimanfaatkan oleh pemerintahan daerah (PEMDA) tingkat I dan II.
V. Kesimpulan
Telah disampaikan laporan kemajuan pelaksanaan kegiatan litbang DIPA Tematik
dengan judul pemanfaatan dan pemasangan Radar pengawas pantai yang merupakan
kegiatan dengan satuan biaya khusus pada tahun 2012. Output utama dari kegiatan
ini adalah satu prototip Radar yang seharusnya dapat dipasang disuatu tempat
tertentu yang berdekatan dengan garis pantai dengan bekerjasama dengan mitra
Industri (PT. INTI) dan PEMDA. Kegiatan perakitan, integrasi dan pengetesan akan dilakukan pada pertengahan tahun sampai akhir tahun 2012.
VI. Referensi
1. M.I. Skolnik, ’Radar Handbook’, McGraw‐Hill, 1990.
2. M.I. Skolnik, ’Introduction to Radar Systems’, McGraw‐Hill, 2002. 3. S. Kingsley and S. Quegan, ’Understanding Radar Systems’, CHIPS.
4. Leo P. Ligthart, ’Short Course on Radar Technologies’, International
Research Centre for Telecommunications‐transmission and Radar, TU Delft,
September 2005.
5. Mark Richards, ’Radar Signal Processing’, McGraw‐Hill, 2005.
6. Bassem R. Mahafza, ‘Radar Systems Analysis and Design Using MATLAB’,
Chapman & Hall, 2005.
7. Mashury Wahab dan Pamungkas Daud, ‘Image Processing Algorithm for
FM‐CW Radar’, TSSA/WSSA Conference 2006, ITB Bandung, 2006.
8. Mashury, ‘Development of Radar Image Processing Algorithm’, Information
and Communication Technology Seminar 2006, ITS Surabaya, 2006.
9. Mashury Wahab, Pamungkas Daud, Yuyu Wahyu, Yusuf Nur Wijayanto.
“Radar Trainer System for LIPI FM‐CW Radar Network”, ICICI 2007,
Bandung.
10. Mashury Wahab, ‘Penggunaan UAIS dan Radar pengawasan pantai untuk
monitoring wilayah perairan indonesia’, Seminar Radar nasional 2007,
Jakarta.
11. Yusuf Nur Wijayanto, Dadin Mahmuddin, and Mashury Wahab
“Perancangan Sistem LFM‐Chirp Radar menggunakan Matlab untuk
Menentukan Posisi Target”, IES‐EEPIS‐ITS 2007, Surabaya.
12. Mashury, Yuyu Wahyu, A. Adya Pramudita, and Pamungkas Daud, “Coupled
Patch Array Antenna For Surveillance Radar”, International Conference
TSSA 2007, Bandung, 2007.
13. Mashury Wahab and Yuyu Wahyu, “Patch Array Antenna For FM‐CW
14. Mashury Wahab, Pamungkas Daud, Yuyu Wahyu, Yusuf Nur Wijayanto,
“Radar Trainer System for LIPI FM‐CW Radar Network”, International
Conference ICICI 2007, Bandung, 2007.
15. Mashury, Yusuf N. W., Pamungkas D., Dadin M., Djohar S., “ A Data
Processing Scheme For LIPI Coastal Surveillance Radar”, International
Conference on Telecommunications (ICTEL) 2008, Bandung.
16. Mashury Wahab, Sulistyaningsih and Yusuf Nur Wijayanto, “Radar Cross
Section For Object Detection Of FM‐CW Coastal Surveillance Radar”,
Electrical Power, Electronics, Communications, Control and Information
Seminar (EECCIS) 2008, Malang.
17. Mashury, Dadin Mahmudin dan Yusuf Nur Wijayanto, “ Rancang Bangun
Perangkat Lunak Citra Radar”, Seminar Radar Nasional 2008, Jakarta.
18. Mashury Wahab, Pamungkas Daud, Yuyu Wahyu, dan Rustini S. Kayatmo,
“Rancang Bangun Radar Pengawasan Pantai INDRA II Di Pusat Penelitian Elektronika dan Telekomunikasi (PPET) LIPI”, Seminar Radar Nasional 2008, Jakarta.
Daftar Publikasi Ilmiah
1. Judul : Radar Target Image Analysis Using Fuzzy C Means and Coordinat Calculation
Penulis: Octa Heriana dan Sulistyaningsih
Afiliasi : PPET‐LIPI
Abstract
The image analyisis on a moving object target of the RADAR detection image was done by the method of coordinates calculation of image pixels to determine distance, direction and speed of the object movement. Fuzzy C Means was used to determine the coordinates center of the detected object. Image data that used was the data of RADAR recording software. Image processing was done by the programming software, the first step was the process of image thresholding to separate the mainland with a radar target object, and then the number of objects known through calculation of pixel box which is then used to determine the number of clusters on the Fuzzy C Means and show the number of coordinates of
the detected objects. Object coordinates were measured from the center of
Results of analysis showed that the coordinates position, distance, direction, and speed of the object can be determined by this method with a fast computation.
Keywords: Image; Coordinate; Moving Object; Fuzzy C Means.
2. Judul : Design and Realization of a Low Cost Two‐Way Wilkinson Power Divide at Intermediate Frequency for a RADAR System
Penulis: Taufiqqurrachman and Hana Arisesa
Afiliasi : PPET‐LIPI
Abstract
This paper presents analysis and design narrowband two‐way Conventional
Wilkinson power. The design employyed common lumped element that much
easier to realize. This Wilkinson power divider is designed at 456 MHz for using in IF RADAR System. The Practical fabbrication implemented on FR4 substrate. The VSWR for all port for both dividers is better than 1.3:1, insertion loss is less than 0.6 dB and 25 dB of isolation is achived. The proposed divider has the narrow bandwidth, 200 MHz. It was found that the Wilkinson power dividers cannot perform well with simulation values. However, this problem could be solved by fine tuning capasitor components.
Keywords : Wilkinson, Power divider, IF, Radar
3. Judul : Design and Simulation of 456 MHz Bandpass Filter for Radar
System
Penulis: Fajri Darwis dan Deni Permana
Afiliasi : PPET‐LIPI
Abstract
This paper presents the design and simulation of bandpass filter for frequency‐ modulated continuous wave radar system. A bandpass filter was designed at the operating center frequency of 456 MHz, bandwidth of 60 MHz, 3 dB insertion loss, 1.1 VSWR, 50 ohm impedance and dB/octave less than ‐70 dB. The design filter was simulated using Elsie Tonne version 2.4. The outcome of this research was a prototype of a 456 MHz bandpass filter and the results of the simulation were approximately similar to the required specifications.
Keywords: bpf, bandwidth, intersion loss, vswr, dB/octave.
4. Judul : Size Enhancement of 50‐5000 MHz Octahedral Monopole Antennas for Ground‐Penetrating‐Radar
Penulis: Folin Oktafiani dan Achmad Munir
Afiliasi : PPET‐LIPI dan STEI‐ ITB
Abstract
In this research, the Ground Penetrating Radar (GPR) antenna is designed by improving the reference antenna’s dimensional performance, in order to ease the detection process in the field. The Octahedral antenna is used as the reference
antenna. The method used was by optimizing each part of the antenna
dimension using 3D software which operates at frequency domain. The studies done includes: minimizing the antenna diameter, determining the transition angle on antenna’s arms, placing the resistors, determining the length of antenna’s arm before the abrupt transition, searching the width of T strip antenna which gives the optimum result, determining the resistor values, and the last is, determining the distance between antenna’s arm and the ground plane. The simulation results show that the 50 mm x50 mm dimension of antenna has the same characteristics with the reference antenna, i.e return loss ≤ ‐10dB for frequency range 50 –
5000MHz.
Keyword : antenna; ground penetrating radar; dimension of antenna; return loss
5. Judul : Radar Cross Section Calibration Using a Trihedral Reflector For LIPI Coastal Surveillance Radar
Penulis: Sulistyaningsih dan Mashury Wahab
Afiliasi : PPET‐LIPI
Abstract
A RCS calibrator is an object used to calibrate Radar Cross Section (RCS) reading of a radar. For LIPI coastal surveillance radar, the object used for this purpose is a trihedral. During filed experiments LIPI coastal surveillance radar using trihedral reflector. The reflector can be used on a very wide frequency range. Front view of the RCS calibrator using a trihedral with dimensions. The long and short sides are 91.5 cm and 64.5 cm long, respectively. Determination of the relevant dimension for the RCS specifications.RCS calibration for the radar is a very important aspect for the accurate estimation of target information.
Keywords: Radar Cross Section, RCS, trihedral reflector, calibration, radar.
6. Judul : Design and Simulation of 160 MHz Bandpass Filter with 60 MHz
Bandwidth
Penulis: Novita Dwi Susanti dan Deni Permana
Afiliasi : PPET‐LIPI
This paper describes the design and simulate band pass filter which use
operational frekuency from 130 MHz until 190 MHz and have frequency of cut off at 160 MHz. To design this filter we calculate the value of inductor and capasitor first, and then simulate with software simulation. The filter design with seventh
order involves many parameter such as pass band, stop bandwidths, center
frequency, stop band attenuation, pass band return loss adn impedances of the input and output resonator. The design filter was simulated using Elsie Tonne version 2.4. And the result of simulated we can see the VSWR is 1.3, insertion loss
‐4dB with dB/octave is less than ‐50 dB.
Keywords : bpf, bandwidth, insertion loss, vswr, dB/octave
7. Judul : Perancangan Antena Array Microstrip Planar Untuk Radar S‐Band
Penulis: Yuyu Wahyu, Folin Oktafiani, Yussi Perdana Saputera, dan Mashury
Wahab
Afiliasi : UI
Abstrak
Pada penelitian ini dilakukan desain dan realisasi antenna untk portable radar S‐ band. Antena yang dirancang adalah antenna mikrostrip yang disusun secara array
8x4 dengan jumlah keseluruhan 64 modul antenna yang bertujuan untuk
mempersempit beamwidth dan memperbesar gain antenna. Bahan yang
digunakan adalah FR 4 dengan ketebalan substrat 3,2 mm dan tebal patch 0,035 mm, serta memiliki nilai r=4,4. Dari hasil satu modul antenna diperoleh lebar BW sebesar 60 MHz untuk S11 sebesar ‐15, sedangkan gain antena yang disimulasikan sebesar 12,79 dBi. Untuk hasil simulasi antenna array 8x4 didapat gain sebesar 27,58 dBi.
Kata kunci : Radar, S‐band, Antena