The core frequency bands of anti-UAV radars aremillimeter wave (24/77/79GHz), Ku-band (12-18GHz), X-band (8-12GHz) and S-band (2-4GHz), with occasional C-band applications. Their differences in wavelength, detection performance, cost and environmental adaptability determine their detection range, positioning accuracy, anti-interference ability and use cases.
The following table compares their core differences, advantages, disadvantages and applicable scenarios:
Core Differences of Mainstream Anti-UAV Radar Frequency Bands
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Core Frequency Band
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Wavelength Characteristics
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Core Detection Features
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Positioning Accuracy
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Clutter/Anti-interference
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Detection Range (RCS 0.01-0.1㎡ UAVs)
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Hardware Cost (RMB)
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Environmental Impact
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Applicable Scenarios
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Millimeter wave (24/77GHz)
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Shortest (millimeter level), extremely narrow beam
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Short-range high precision; captures micro-Doppler features; distinguishes UAVs, birds and clutter
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Highest (≤3m range, ≤0.5° azimuth)
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Strongest ground clutter suppression, low electromagnetic interference
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2-5km (short-range)
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Medium-high (¥1.2-2 million/unit)
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Most affected by fog, rain and sand dust
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Short-range precision prevention; low-altitude core area protection
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Ku-band (12-18GHz)
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Short, narrow beam
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Balanced medium-short range; good depression angle; small antenna
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High (≤5m range, ≤1° azimuth)
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Strong clutter suppression, low civil interference
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3-8km (medium-short range)
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Medium (¥0.8-1.5 million/unit)
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Slightly affected by fog and rain
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Perimeter protection; blind spot compensation; mobile deployment
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X-band (8-12GHz)
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Moderate, mature technology
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Universal medium-long range; balanced precision and range; strong multi-target tracking
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Medium-high (≤8m range, ≤1° azimuth)
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Strong clutter suppression; slight civil interference (needs filtering)
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5-10km (medium-long range)
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Medium (¥0.9-1.6 million/unit)
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Good all-weather adaptability
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Universal prevention; industrial park coverage; fixed + mobile deployment
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S-band (2-4GHz)
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Longer, wider beam
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Long-range wide-area detection; strong penetration; large coverage
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Medium (≤15m range, ≤2° azimuth)
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General clutter suppression; strong anti-severe weather ability
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8-15km (long-range)
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High (¥2-3 million/unit)
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Least affected by harsh weather; stable all-weather
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Long-range early warning; large venue peripheral protection
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Detailed Analysis of Each Band
1. Millimeter wave (24/77GHz)
Advantages
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Extremely narrow beam, strongest ground clutter suppression, filtering interference from vehicles, buildings and vegetation to accurately capture low-altitude micro-UAVs.
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Identifies micro-Doppler features to distinguish UAVs, birds and falling objects, reducing false alarms.
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Small antenna, suitable for portable or embedded deployment.
Disadvantages
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Short detection range, only for short-range use.
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Easily scattered by water vapor and sand dust; detection range drops over 50% in rainy/foggy days, requiring photoelectric supplementary equipment.
Applications
Precision protection of core areas such as oil depots and nuclear power plants.
2. Ku-band (12-18GHz)
Advantages
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Good depression angle performance, detecting targets blocked by low-rise buildings and trees to solve low-altitude blind spots.
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Easy antenna miniaturization, portable/vehicle-mounted, flexible for mobile blind spot compensation.
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Few civil interference bands, stable in complex electromagnetic environments.
Disadvantages
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Limited long-range detection, unable to meet wide-area early warning needs.
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Lower antenna gain than X-band; reduced accuracy for ultra-small UAVs (RCS < 0.01㎡).
Applications
Perimeter protection of industrial parks, data centers and communities; mobile emergency prevention for large-scale activities.
3. X-band (8-12GHz)
Advantages
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Mature technology, stable performance and high reliability; the most widely used band.
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Balanced performance, combining medium-long range detection and high precision; tracks dozens of low-altitude small targets simultaneously.
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Good all-weather adaptability, less affected by rain and fog.
Disadvantages
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Slightly affected by civil electromagnetic interference (e.g., communication, broadcast signals), requiring professional filtering.
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Weaker clutter suppression than millimeter wave and Ku-band; possible false alarms in dense ground target areas.
Applications
Widely used in general anti-UAV scenarios, including industrial parks, scenic spots, large gatherings and border patrols.
4. S-band (2-4GHz)
Advantages
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Long detection range and large coverage, suitable for wide-area early warning.
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Strong penetration, least affected by fog, rain and sand dust, ensuring stable all-weather operation.
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Strong anti-severe weather interference, reliable in harsh environments.
Disadvantages
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Lower positioning accuracy than other bands; wider beam leads to reduced target resolution.
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Large antenna volume, high cost, not suitable for mobile deployment.
Applications
Long-range early warning and peripheral protection of large venues, such as stadiums and industrial zones.