39 lines
2.6 KiB
XML
39 lines
2.6 KiB
XML
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 650 200" width="650" height="200">
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<defs>
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<marker id="tof-arr" markerWidth="8" markerHeight="6" refX="8" refY="3" orient="auto">
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<path d="M0,0 L8,3 L0,6 Z" fill="#e74c3c"/>
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</marker>
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<marker id="tof-arr-b" markerWidth="8" markerHeight="6" refX="8" refY="3" orient="auto">
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<path d="M0,0 L8,3 L0,6 Z" fill="#3498db"/>
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</marker>
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</defs>
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<text x="325" y="20" text-anchor="middle" font-family="Arial, sans-serif" font-size="14" font-weight="bold" fill="#333">LiDAR: Time-of-Flight Distance Measurement</text>
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<!-- LiDAR unit -->
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<rect x="40" y="70" width="80" height="60" rx="10" fill="#3498db" fill-opacity="0.15" stroke="#3498db" stroke-width="2"/>
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<text x="80" y="98" text-anchor="middle" font-family="Arial, sans-serif" font-size="11" font-weight="bold" fill="#3498db">LiDAR</text>
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<text x="80" y="115" text-anchor="middle" font-family="Arial, sans-serif" font-size="9" fill="#3498db">sensor</text>
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<!-- Outgoing pulse -->
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<line x1="120" y1="85" x2="430" y2="85" stroke="#e74c3c" stroke-width="2" stroke-dasharray="8,4" marker-end="url(#tof-arr)"/>
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<text x="275" y="78" text-anchor="middle" font-family="Arial, sans-serif" font-size="10" fill="#e74c3c">emitted laser pulse →</text>
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<!-- Object -->
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<rect x="445" y="55" width="30" height="90" rx="4" fill="#555" fill-opacity="0.3" stroke="#555" stroke-width="2"/>
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<text x="460" y="165" text-anchor="middle" font-family="Arial, sans-serif" font-size="10" fill="#555">object</text>
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<!-- Returning pulse -->
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<line x1="445" y1="115" x2="128" y2="115" stroke="#3498db" stroke-width="2" stroke-dasharray="8,4" marker-end="url(#tof-arr-b)"/>
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<text x="275" y="134" text-anchor="middle" font-family="Arial, sans-serif" font-size="10" fill="#3498db">← reflected pulse returns</text>
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<!-- Distance annotation -->
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<line x1="120" y1="155" x2="445" y2="155" stroke="#999" stroke-width="1"/>
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<line x1="120" y1="150" x2="120" y2="160" stroke="#999" stroke-width="1"/>
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<line x1="445" y1="150" x2="445" y2="160" stroke="#999" stroke-width="1"/>
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<text x="282" y="175" text-anchor="middle" font-family="Arial, sans-serif" font-size="12" font-weight="bold" fill="#333">d = c · Δt / 2</text>
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<!-- Time annotation -->
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<text x="540" y="90" text-anchor="start" font-family="Arial, sans-serif" font-size="10" fill="#666">Δt = round-trip time</text>
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<text x="540" y="108" text-anchor="start" font-family="Arial, sans-serif" font-size="10" fill="#666">c = speed of light</text>
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<text x="540" y="126" text-anchor="start" font-family="Arial, sans-serif" font-size="10" fill="#666">÷2 for round trip</text>
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</svg> |
