Stop Guessing Camera Blind Spots on 2D PDFs: Computing EN 62676-4 DORI Cones & 60GHz Fresnel Zones in 3D KML

Most physical security integrators still design multi-acre camera and wireless deployments by drawing flat 2D circles on a PDF site map. Then installation day arrives, and a 12-foot elevation change, building parapet, or tree canopy blocks 40% of the field of view—or degrades the license-plate recognition pixel density below evidentiary standards.

At Aria Technology Group (AriaWave), we replaced 2D guesswork with our open-source 3D Geospatial Camera & RF Mesh Planner, generating mathematical EN 62676-4 DORI (Detection, Observation, Recognition, Identification) frustums and 60GHz Fresnel zones directly into interactive 3D Google Earth KML/KMZ models.

1. Mathematical Pixel-Density Modeling (EN 62676-4)

Instead of arbitrary radius rings, every camera sensor (4K 8MP, 4MP varifocal, or thermal PTZ) is modeled using its exact horizontal focal angle $\theta_H$ and horizontal resolution $R_H$ against international pixel-per-meter thresholds:

• Identification (250 px/m / ~76 px/ft): Court-admissible facial and license plate capture
• Recognition (125 px/m): Familiar person or vehicle make/model verification
• Observation (62 px/m): Forensic behavioral tracking across gates and paddocks
• Detection (25 px/m): Long-range perimeter intrusion alerting

$$D_{\text{max}}(\text{PPM}) = \frac{R_H}{2 \cdot \text{PPM} \cdot \tan(\theta_H / 2)}$$

2. Combined 3D Vision + 60GHz Backhaul Verification

Because high-bitrate 4K60 surveillance streams require multi-gigabit backhaul, our KML generator simultaneously computes the 3D First Fresnel Zone ellipsoid between every pole's 60GHz Siklu/Ubiquiti radio and the distribution hub:

$$F_1 = 8.656 \sqrt{\frac{d_1 \cdot d_2}{f_{\text{GHz}} \cdot D_{\text{km}}}}$$

Executives and facility directors can fly through the entire 3D campus in Google Earth Web before a single pole is augered or a single cable is pulled.

3. Explore the Blueprint or Schedule a Site Design Review

• Open-Source 3D Planner Blueprint: ariawave.tech/resources/mmwave-vision-mesh-planner
• GitHub Repository (MIT): github.com/AIjennings/aria-agent-blueprints
• Talk to our Live AI Architect: ElevenLabs Interactive Voice Agent
• Book a 3D Campus & Security Audit: ariawave.tech/#contact