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All Journal International Journal of Electrical and Computer Engineering
Berndt, Robert
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Computer Science & IT Electrical & Electronics Engineering

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Deep learning and quantization for accurate and efficient multi-target radar inference of moving targets Ernest Mashanda, Nyasha; Watson, Neil; Berndt, Robert; Abdul Gaffar, Mohammed Yunus
International Journal of Electrical and Computer Engineering (IJECE) Vol 14, No 3: June 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v14i3.pp3187-3196

Abstract

Real-time, radar-based human activity and target classification is useful for wide-area ground surveillance. However, the feasibility of deploying deep learning (DL) models in radar-based systems with limited computational resources remains unexplored. This paper investigated the effect of quantization on model throughput and accuracy for deployment in radar systems. A seven-layer residual network was proposed to classify ground-moving targets and achieved a test accuracy of 87.72%. The model was then quantized to 16-bit and 8-bit precision, resulting in a 3.8 times speedup in inference throughput, with less than a 0.4% drop in test and validation accuracy. The results showed that quantization can improve inference throughput with a negligible decrease in target classification accuracy. The increase in throughput and reduction in computational expense that comes with quantization promotes the feasibility of the deployment of DL models in systems with limited computational resources. The findings of this paper hold significant promise for the successful use of quantized models in modern radar systems, while adhering to stringent size, weight and power consumption constraints.
Co-Authors Abdul Gaffar, Mohammed Yunus Ernest Mashanda, Nyasha Watson, Neil