Synthetic Aperture Radar Raw Signal Simulator
For Both Pulsed And FM-CW Modes
Author(s)
P. Serafin, C. Lesnik & A. Kawalec
Abstract
Simulated raw radar signals prove to be very useful at the first stages of testing
radar signal processing algorithms and procedures. This is particularly true for
synthetic aperture radar (SAR), where the costs of real signals acquisition are
very high due to the costs of building the system as well as the costs of mission
(air or space-borne). This paper describes a multifunctional SAR raw signal
simulator that has been used for the verification of SAR image synthesis
algorithms. Generated signals can be imitated for pulsed as well as FM-CW
radars both in SLAR and squinted cases, it is also possible to choose between
video and intermediate frequency signals. The simulator allows us to generate
echo signals from stationary and moving targets. The user is able to differentiate
the statistic properties of received echo signals for each target, thus allowing us
to generate different types of reflecting surfaces. If present, a real raw SAR
signal can be merged with a simulated one to produce more complicated
scenarios. The paper presents results of the simulation of raw signals and their
image after SAR processing.
Keywords: synthetic aperture radar, SAR signal simulator, FM-CW SAR.
1 Introduction
Airborne and space borne radar imaging allows us to collect the pictures of a
terrain fragment independently of the time of the day, the weather or visibility
conditions over the imaged scene. Unfortunately, due to relatively long waves
used by the radar (compared to photography), it needs to employ large antennae
in order to achieve the desired image resolution. This can make the system
impossible to build onboard an airplane or a satellite. The solution to this
problem is the technique of the synthetic aperture radar (SAR) that is able to
Keywords
synthetic aperture radar, SAR signal simulator, FM-CW SAR
Related Book
Other papers in this volume
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