Abstract
In general, Radar or Radio Detection and Ranging is an electromagnetic wave system that is useful to measure distance and answer and make maps of surrounding objects. Radar has an advantage compared to other navigation tools, which is that radar does not require a transmitter station as a transmitter. Radar has an electronic wave emission principle that emits short radio wave pulses emitted in a narrow beam by a directional antenna. In this study, a multi-object radar detection simulation was carried out using Dopler processing both MTI and PDP, which later on the radar will detect related objects. Multi-object here is a condition that is achieved when a navigation radar detects more than one object. The result of this research is a multi-object detection process using the MTI and PDP methods and the matched-filter obtained from the predetermined data. So Doppler processing aims to mitigate the clutter signal to improve the detection performance of moving targets even though there is a dominance of signals originating from stationary clutter.
Highlights
Radar or Radio Detection and Ranging is an electromagnetic wave system that is useful to measure distance and answer and make maps of surrounding objects
Radar has an advantage compared to other navigation tools
which is that radar does not require a transmitter station
Summary
Secara umum Radar atau Radio Detection and Ranging merupakan suatu system gelombang elektromagnetik yang berguna untuk mengukur jarak Radar memiliki prinsip pancaran gelombang yang mana memancarkan pulsa gelombang radio pendek yang dipancarkan dalam alur semput (narrow beam) oleh antenna berarah (directional antenna) Monitoring lalu lintas udara merupakan salah satu bentuk penerapan radar yang dapat kita jumpai disekitar kita, Monitoring lalu lintas udara merupakan media pelayanan pemanduan lalu lintas udara terhadap pesawat terbang. Pada umumnya deteksi target dapat dibedakan menjadi dua keadaan, yang pertama adalah null hypothesis, merupakan suatu keadaan tidak ada sinyal echo (tidak ada target), dan alternative hypothesis testing, dimana terdapat sinyal echo (terdapat target). Pemrosesan Doppler merupakan istilah yang digunakan untuk penapisan (filtering) atau analisa spektral dari sinyal echo dari jarak tertentu dan periode tertentu yang dihasilkan oleh beberapa pulsa yang ditransmisikan sinyal radar (slow times) (Mark A Richard, 2014)(Richards et al, 2010).Doppler dapat dibedakan menjadi dua tipe pemrosesan, yaitu Moving Target Indication (MTI) dan Pulse Doppler Processing (PDP). Pada penelitian ini dilakukan percobaan pendeteksian terhadap multi-object bergerak dengan menggunakan pemrosesan Doppler. Dimana pemrosesan Doppler menggunakan Moving Target Indication (MTI) dan Pulse Doppler Processing (PDP). Dalam penelitian ini dilakukan juga simulasi pemodelan sinyal echo serta analisa tahapan sampai akhirnya suatu target dapat terdeteksi
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