Article Per Year (5 Year)
p-Index From 2020 - 2025
0
P-Index
This Author published in this journals
All Journal Jurnal Teknologi Dirgantara
Wahyu Widada
Bidang Telemetri dan Muatan Roket, LAPAN
Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Mechanical Engineering Physics

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
METODE DOPPLER RADIO UNTUK MENGUKUR KECEPATAN ROKET RX200 [RADIO DOPPLER METHOD FOR MEASURING VELOCITY OF ROCKET RX200] Wahyu Widada
Jurnal Teknologi Dirgantara Vol.10 No.2 Desember 2012
Publisher : National Institute of Aeronautics and Space - LAPAN

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

Abstract

This paper discusses the methods and design of radio Doppler to measure the speed of the rocket type RX200. Doppler system consists of a radio transponder to emit a continuous radio signal from the rocket and the radio base station to measure the change in frequency of the radio signal. A change in the frequency of the radio signal caused by the speed of the rocket is used to measure the speed and position of the rocket. The design of radio frequency is 880 MHz transponder adapted to the design speed of the rocket RX200. This method is relatively easy to implement compared with the radar transponder system that has been developed. A simulation of Doppler frequency is performed using the radar data transponder rocket launch experiment RX200 and recomendation of bandwith radio receiver should be 4000 Hz. The combination of these two systems will make a more acurate and reliable tracking system. Key words: Doppler tracking, Radio transponder, Frequency variation
RANCANG BANGUN DATA AKUISISI MULTI KANAL UNTUK DOPPLER TRACKING SISTEM PELUNCUR ROKET JAMAK (DESIGN AND DEVELOPMENT OF MULTI CHANNEL DATA ACQUISITION FOR DOPPLER TRACKING OF MULTIPLE LAUNCH ROCKET SYSTEM) Wahyu Widada
Jurnal Teknologi Dirgantara Vol. 11 No.2 Desember 2013
Publisher : National Institute of Aeronautics and Space - LAPAN

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

Abstract

Makalah ini membahas hasil desain dan pengembangan Sistem Data Akuisisi biaya rendah dengan Universial Serial Bus (USB) untuk pengukuran sinyal Doppler tracking roket. Sinyal Doppler mempunyai rentang frekuensi antara 0 hingga 3000 Hz bergantung pada perubahan kecepatan roket dan frekuensi radio. DAS ini dirancang menggunakan mikrokontroler ATMega32, 8 kanal simultan dengan 16 bit Analog Digital Converter (ADC), komunikasi dengan Personal Computer (PC) melalui USB. DAS ini telah diuji dengan program aplikasi yang dikembangkan di MATLAB, yang dapat memantau secara realtime 8 kanal sinyal Doppler dalam grafis serta tampilan numerik dengan sampling 16 KHz. DAS ini akan digunakan untuk aplikasi pada peluncuran roket Multiple Launch Rocket System (MLRS). Kata kunci: Data akuisisi multi-kanal, Doppler receiver, Tracking roket, MLRS
METODE TRACKING KECEPATAN ROKET MENGGUNAKAN TRANSPONDER DOPPLER DUA-FREKUENSI (ROCKET SPEED TRACKING METHOD USING TWO-FREQUENCY DOPPLER TRANSPONDER) Wahyu Widada
Jurnal Teknologi Dirgantara Vol.11 No.1 Juni 2013
Publisher : National Institute of Aeronautics and Space - LAPAN

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

Abstract

Sistem Doppler tracking untuk roket biasanya hanya menggunakan satu frekuensi pembawa. Tulisan ini membahas sebuah metode Doppler radio pelacak roket dengan menggunakan dua frekuensi gelombang radio. Sistem ini menggunakan transponder Doppler pada frekuensi 465 MHz dan 2400 MHz secara simultan. Radio frekuensi rendah digunakan untuk mengukur kecepatan-tinggi roket dan sebaliknya gelombang radio frekuensi lebih tinggi digunakan untuk mengukur kecepatan rendah roket. Hasil yang diperoleh dari metode ini lebih akurat 5.4 kali pada kecepatan kurang dari 0.7 Mach dibandingkan dengan hasil dari sistem Doppler yang menggunakan hanya satu frekuensi radio. Metode ini cocok untuk mengukur kecepatan roket hingga 3.8 Mach.Kata kunci: Doppler tracking, Roket, Dua-frekuensi, Resolusi tinggi, Transponder
METODE KALIBRASI RADAR TRANSPONDER ROKET MENGGUNAKAN DATA GPS (CALIBRATION METHOD OF RADAR TRANSPONDER FOR ROCKET USING GPS DATA) Wahyu Widada
Jurnal Teknologi Dirgantara Vol 10 No.1 Juni 2012
Publisher : National Institute of Aeronautics and Space - LAPAN

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

Abstract

This paper discusses the method of calibration of radar transponders for the rocket launch applications using GPS data. Calibration is performed by measuring the distance of two positions with GPS data and used as a reference for the calibration range radar transponder. Transponder is placed on the measured position and the radar transceiver is placed in a position of radar base station. The obtained results shows that the calibration method is very easy to do, reference to a longer distance can improve the accuracy result of the calibration. We obtained a calibration factor value for the radar system used in the experiment is 0.9275.. Keywords: Radar transponder, GPS, Google-earth, Calibration method
Co-Authors