Topic Guides
Structured introductions and state-of-the-field guides across science, artificial intelligence, and engineering.
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How MIMO Radar Builds a Virtual Array: Geometry, Math, and TDM Traps
See how separable transmitter echoes and receiver channels create virtual spatial samples, then audit a 2-TX/4-RX array, distinguish pair count from useful aperture, and diagnose…
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Can Radar Replace Cameras for Human Monitoring? An Evidence-Led Comparison
Radar can replace cameras for some monitoring tasks, but the evidence depends on the measurement, training and deployment conditions. Compare primary research, privacy trade-offs and…
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Which Radar-HAR Dataset Should You Use? A Researcher’s Comparison
A representation-first comparison of major radar-HAR datasets, covering signal level, activities, participants, environments, evaluation splits, access, licensing, and the research questions each dataset can—and cannot—answer.
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Micro-Doppler Explained: How Radar Sees Arms, Legs, and Human Motion
Micro-Doppler reveals how torso and limb velocities change over time. This physics-first guide explains human radar signatures, spectrogram interpretation, sampling limits, common mistakes, and a…
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Radar-Based Human Activity Recognition: What Researchers Need to Know Before Starting
A practical guide to radar-based human activity recognition, covering radar modalities, signal representations, dataset design, leakage-free evaluation, model selection, and deployment challenges researchers should consider…