Penerapan Teknik Monopulse pada Radar MIMO CC OFDM Multi-Beam

Cordova, Muhammad Adelio (2025) Penerapan Teknik Monopulse pada Radar MIMO CC OFDM Multi-Beam. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini bertujuan untuk mengintegrasikan dan mengevaluasi kinerja teknik monopulse pada sistem radar Multiple Input Multiple Output (MIMO) Circulating Code (CC) Orthogonal Frequency Division Multiplexing (OFDM) multi-beam untuk mencapai estimasi sudut target berpresisi tinggi. Metodologi yang digunakan adalah perancangan dan simulasi sistem menggunakan MATLAB, di mana sinyal Sum (Σ) dan Difference (Δ) dibentuk dari dua berkas antena yang bersebelahan untuk menghitung Direction of Arrival (DOA) target. Hasil simulasi menunjukkan bahwa sistem mampu mencapai akurasi yang sangat tinggi pada batas-batas jangkauan pindai, dengan error absolut serendah 0.0514° dan 0.3390°. Namun, penelitian ini juga mengidentifikasi adanya sebuah fenomena anomali pada kondisi broadside, di mana terjadi deviasi error yang signifikan sebesar 0.7236°. Analisis mendalam menunjukkan bahwa hal ini disebabkan oleh sensitivitas tinggi sistem terhadap fasa sinyal CC-OFDM yang kompleks, yang menyebabkan ketidakstabilan pada perhitungan rasio monopulse. Meskipun demikian, pengujian sensitivitas sudut membuktikan bahwa sistem memiliki linearitas yang sangat baik untuk aplikasi pelacakan dinamis. Secara keseluruhan, penelitian ini berhasil memvalidasi efektivitas integrasi teknik monopulse, namun juga mengungkap tantangan implementasi krusial terkait stabilitas fasa yang menjadi landasan penting untuk pengembangan selanjutnya.
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This research aims to integrate and evaluate the performance of the monopulse technique in a multi-beam Multiple Input Multiple Output (MIMO) Circulating Code (CC) Orthogonal Frequency Division Multiplexing (OFDM) radar system to achieve high-precision target angle estimation. The methodology involves the design and simulation of the system using MATLAB, where Sum (Σ) and Difference (Δ) signals are generated from two adjacent antenna beams to calculate the target's Direction of Arrival (DOA).
Simulation results demonstrate that the system can achieve very high accuracy at the scan-edges, with absolute errors as low as 0.0514° and 0.3390°. However, the research also identifies an anomalous phenomenon under broadside conditions, where a significant error deviation of 0.7236° was observed. In-depth analysis indicates this is caused by the system's high sensitivity to the phase of the complex CC-OFDM signal, which leads to instability in the monopulse ratio calculation. Nevertheless, angular sensitivity tests prove that the system possesses excellent linearity for dynamic tracking applications. Overall, this research successfully validates the effectiveness of integrating the monopulse technique, while also uncovering crucial implementation challenges related to phase stability, providing a vital foundation for future development.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Monopulse, Radar MIMO, Circulating Code, OFDM, Multi-Beam, Estimasi Sudut, Monopulse, Radar MIMO, Circulating Code, OFDM, Multi-Beam, Angle Estimation.
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5102.9 Signal processing. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5103.484 Orthogonal frequency division multiplexing. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7871.6 Antennas (Electronics) 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:	Muhammad Adelio Cordova
Date Deposited:	28 Jul 2025 01:51
Last Modified:	28 Jul 2025 01:51
URI:	http://repository.its.ac.id/id/eprint/121697

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