Rancang Bangun Pembangkitan Sinyal Radar CC-OFDM-MIMO Berbasis SDR

Aqilah, Evandro Wildan (2023) Rancang Bangun Pembangkitan Sinyal Radar CC-OFDM-MIMO Berbasis SDR. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sistem pemantauan dan pengawasan memiliki peran vital di penerbangan, pelayaran, dan kegiatan militer dan didukung oleh teknologi radar yang dapat mendeteksi perubahan cuaca dan memberikan informasi tentang ancaman yang mungkin terjadi. Radar bekerja dengan cara memancarkan sinyal dan mendeteksi gema dari objek (target), memberikan informasi tentang jarak target. Solusi untuk meningkatkan kinerja radar termasuk penggunaan modulasi Orthogonal Frequency Division Multiplexing (OFDM) dengan pemrograman waveform menggunakan kode Golay untuk mengatasi tantangan Peak-to-Average Power Ratio (PAPR) dan meminimalkan range side lobe. Radar MIMO dengan circulating code (CC) memungkinkan radiasi beam ke arah yang diinginkan tanpa memerlukan phase-shifter, sehingga mengurangi biaya produksi. Tujuan penelitian tugas akhir ini adalah untuk merancang waveform generator untuk sistem radar CC-OFDM-MIMO berbasis Software-Defined Radio (SDR). Dalam tugas akhir ini, dilakukan perancangan sistem radar dan perancangan sistem waveform generator menggunakan LabVIEW. Pengukuran dilakukan dengan spectrum analyzer, oscilloscope, dan Universal Software Radio Peripheral (USRP) sebagai receiver. Data yang diperoleh dianalisis menggunakan MATLAB untuk mendapatkan informasi seperti PAPR, phase shift, beam steering, dan resolusi jarak. Berdasarkan hasil pengujian, bandwidth maksimum yang dapat dibangkitkan oleh USRP yaitu 5 MHz dengan parameter waveform yang dibuat. PAPR dari waveform generator yang dibuat memiliki offset sebesar 0.592 - 1.594 dB dibandingkan dengan nilai simulasi PAPR ideal yaitu 3 dB, dan beam steering antara dua elemen array antena mengalami offset sebesar 7.5° dibandingkan dengan parameter waveform yang dibuat.
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Monitoring and surveillance systems play a vital role in aviation, maritime, and military fields, supported by radar technology capable of detecting weather changes and providing information on potential threats. Radar operates by transmitting signals and detecting echoes from objects (targets), providing information about the target's distance. Solutions to enhance radar performance include using Orthogonal Frequency Division Multiplexing (OFDM) modulation with Golay code-based waveform programming to overcome Peak-to-Average Power Ratio (PAPR) challenges and minimize side lobes range. MIMO radar with circulating code (CC) allows beam radiation in the desired direction without the need for phase-shifters, thereby reducing production costs. The objective of this final project research is to design a waveform generator for CC-OFDM-MIMO radar system based on Software-Defined Radio (SDR). The research involves the design of radar and waveform generator systems using LabVIEW. Measurements are conducted using a spectrum analyzer, oscilloscope, and Universal Software Radio Peripheral (USRP) as the receiver. Data obtained is analyzed using MATLAB to obtain information such as PAPR, phase shift, beam steering, and range resolution. Based on the test results, the maximum bandwidth that can be generated by the USRP is 5 MHz with the specified waveform parameters. The PAPR of the generated waveform has an offset of 0.592 - 1.594 dB compared to the ideal simulated PAPR value of 3 dB, and the beam steering between two antenna array elements has an offset of 7.5° compared to the specified waveform parameter.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Circulating code, Kode Golay, OFDM, Radar MIMO, Software-Defined Radio (SDR), Circulating code, Golay Code, OFDM, MIMO Radar, Software-Defined Radio (SDR)
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK6564 Radio transmitter-receivers T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunication
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	Evandro Wildan Aqilah
Date Deposited:	28 Jul 2023 02:49
Last Modified:	31 Jul 2023 04:21
URI:	http://repository.its.ac.id/id/eprint/99845

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