Pembuatan Software Radar Cross Section Target

Gazali, Mukhaimy (2007) Pembuatan Software Radar Cross Section Target. Masters thesis, Institut Teknologi Sepuluh Nopember.

Text 1204201001-Master_Thesis.pdf - Accepted Version Download (2MB)

Abstract

Sebelum obyek stealth diproduksi, perlu diketahui perkiraan besarnya Radar Cross Section (RCS) yang terjadi pada obyek. Namun software untuk perhitungan RCS tidak mudah diperoleh dan dimodi_kasi sesuai keperluan pengguna. Untuk itu pembuatan software RCS target mutlak diperlukan. Pada tesis ini dibuat software RCS target, yang selanjutnya disebut targetRCS2. Metode yang digunakan untuk prediksi RCS pada targetRCS2 adalah metode Physical Optics (PO) yang berbasiskan potongan-potongan segitiga. Untuk membedakan bagian (potongan) yang teriluminasi dengan bagian bayangan digunakan prinsip back-face culling. Selanjutnya Model obyek direpresentasikan dengan menggunakan OpenGL, yang mana dipakai sebagai software interface untuk hardware gra_k. Perhitungan RCS dilakukan untuk bentuk geometris sederhana, yaitu pelat, kubus, limas dan bola. Untuk bentuk geometri yang kompleks, perhitungan RCS dilakukan pada salah satu model yaitu Frigate. Hasil perhitungan dari targetRCS2 divalidasikan dengan software POFACETS. Pada bentuk geometris sederhana, yaitu pelat, kubus, limas dan bola, hasil validasi tidak memperlihatkan perbedaan yang berarti antara hasil perhitungan pada targetRCS2 dan POFACETS. Sedangkan pada model Frigate, hasil perhitungan RCS dengan targetRCS2 dan POFACETS terlihat perbedaan antara 0,05569 dBsm (decibels square meter) sampai 16,14 dBsm
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Before a stealth object is produced, it is necessary to know the estimated size of the Radar Cross Section (RCS) that occurs on the object. However, software for calculating RCS is not easy to obtain and modify according to user needs. For that, the creation of target RCS software is absolutely necessary. In this thesis, target RCS software is created, hereinafter referred to as targetRCS2. The method used for RCS prediction on targetRCS2 is the Physical Optics (PO) method based on triangular sections. To distinguish the illuminated part (section) from the shadow part, the back-face culling principle is used. Furthermore, the object model is represented using OpenGL, which is used as a software interface for graphics hardware. RCS calculations are performed for simple geometric shapes, namely plates, cubes, pyramids and spheres. For complex geometric shapes, RCS calculations are performed on one of the models, namely Frigate. The calculation results from targetRCS2 are validated with POFACETS software. In simple geometric shapes, namely plates, cubes, pyramids and spheres, the validation results do not show significant differences between the calculation results on targetRCS2 and POFACETS. Meanwhile, in the Frigate model, the results of the RCS calculations with targetRCS2 and POFACETS show a difference of between 0.05569 dBsm (decibels square meters) to 16.14 dBsm

Item Type:	Thesis (Masters)
Additional Information:	RTMa 005.12 Gaz p-1 2007
Uncontrolled Keywords:	Radar Cross Section, Physical Optics, Back-face Culling, OpenGL.
Subjects:	Q Science > QA Mathematics > QA76.6 Computer programming. Q Science > QA Mathematics > QA76.758 Software engineering
Divisions:	Faculty of Mathematics and Science > Mathematics > 44101-(S2) Master Thesis
Depositing User:	EKO BUDI RAHARJO
Date Deposited:	10 Feb 2025 08:48
Last Modified:	10 Feb 2025 08:48
URI:	http://repository.its.ac.id/id/eprint/118610

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