Thesis Type: Postgraduate
Institution Of The Thesis: Gazi University, Mühendislik Fakültesi, Elektrik - Elektronik Mühendisliği, Turkey
Approval Date: 2021
Thesis Language: Turkish
Student: Fatih Kağan DURMAZ
Supervisor: Nursel Akçam
Abstract:
Synthetic Aperture Radar (SAR) is a radar imaging system used in many military and
civilian areas today. Since the main component of the performance of these systems is the
imaging capability, the factors affecting the imaging performance should be evaluated
while designing the radar. In this study, first of all, the simulation of the SAR image of a
point target deployed in the radar imaging area is handled in the MATLAB simulation
environment. In this simulation, the target is illuminated by using the linear frequency
modulation waveform and the reflected signals according to the target properties are
brought to the signal processing steps with the heterodyne receiver structure. Within the
signal processing steps, the SAR image of the point target is created by performing matched
filtering for range compression and back projection method for cross range processing is
implemented respectively. In the later parts of the study, the distortion effects of noise
figure and group delay, which are among the hardware-induced factors affecting the
performance of the SAR system, are examined on the target's range and cross-range
accuracy, range and cross-range resolution, peak side lobe ratio and SAR image.