New-Tech Europe | March 2016 | Digital edition

Figure 1. Amplitude presentation of multiple targets with additive white Gaussian Noise

Figure 2. The antenna radiation pattern shown in AXIEM EM simulator

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

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

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.

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