25 / 84
were able to use in this project.
A small influence on latency was
noticed when simulating a large
number of targets. This was an
important discovery because within
this project there was a need to
perform calculations on many targets
in order to build a picture of the
object shapes.
very quickly. Because the SAR had
to contain several RF parts such as
a signal generator, an RF transmitter,
an antenna, an RF receiver moving
target detector (MTD), the students
used high-frequency design software,
which enabled them to successfully
complete their design project.
Figure 1. Amplitude presentation of multiple targets with additive white
Gaussian Noise
Figure 2. The antenna radiation
pattern shown in AXIEM EM
simulator
Conclusion
Students at the Technion – Israel
Institute of Technology SAMPL Lab
built an efficient, easy-to-use SAR
simulator that could be connected to
MATLAB for signal processing, thereby
significantly speeding up design time.
The simulator could handle many
targets on the surface and perform
Figure 3. Transmitted signal waveform chirp
with a set pulse repetition Interval shown in red.
Signals returning back from the targets are shown
in blue. The pink waveform shows the returning
signals after the match filtering process
Figure 4. Top view of the hierarchical design in VSS,
including chirp generator, target models, control
blocks, and MATLAB blocks for co-simulation and signal
processing
New-Tech Magazine Europe l 25