Fence-Mounted Sensing
The sensing cable is attached to the physical barrier to monitor climbing, cutting, lifting and tampering activity.
PERIMETER SECURITY
DISTRIBUTED ACOUSTIC SENSINGContinuous fiber optic perimeter monitoring for critical infrastructure, industrial facilities, remote sites and high-security boundaries.
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SECURITY BEGINS AT THE BOUNDARY
Continuous Awareness Along the Protected Perimeter
Every critical facility, from industrial plants and energy sites to data centers, airports, mines and high-security installations, depends on an effective perimeter protection strategy.
Fences, cameras, radar, infrared barriers and point sensors remain important parts of physical security. However, long boundaries, remote terrain, limited visibility and environmental activity can make continuous monitoring difficult.
Distributed Acoustic Sensing (DAS) adds a continuous distributed sensing layer along the protected boundary. FOTAS DAS supports real-time detection, localization and classification of physical disturbances acting on the fiber optic sensing cable.
HOW DAS PERIMETER SECURITY WORKS
Turning Fiber Into a Distributed Vibration Sensor
Distributed Acoustic Sensing transforms a suitable optical fiber cable into a continuous distributed vibration and acoustic sensor. A DAS interrogator sends laser pulses through the fiber and analyzes coherent Rayleigh backscatter. Vibrations acting on the sensing cable modify the returned optical signal, allowing the system to detect and localize disturbances along the protected route.
Buried Detection
A buried sensing route can support the detection of footsteps, vehicle movement, digging and other ground disturbances.
Security Corridor Monitoring
Fiber can be deployed along a protected corridor or buffer zone for distributed monitoring across extended boundaries.
Hybrid Deployment
Fence-mounted and buried sensing routes can be combined as part of a layered perimeter protection strategy.
The deployment method should be selected according to the physical barrier, soil conditions, expected activities, environmental exposure, cable construction and required detection strategy.
Explore the Distributed Acoustic Sensing principle.
Explore DAS Technology
Learn how coherent Rayleigh backscatter and time-of-flight analysis provide event detection and location information.
EVENT DETECTION AND CLASSIFICATION
Monitoring Physical Activity Along the Boundary
Depending on the installation and event-classification configuration, detectable activities may include:
- Personnel approaching the perimeter
- Foot traffic along a protected corridor
- Vehicle movement and vibration
- Fence climbing, cutting or lifting
- Physical barrier tampering
- Digging and excavation
- Tunneling attempts
- Ground disturbance near protected areas
Detected vibration and acoustic signatures can be analyzed and assigned to configured event categories, supporting operator assessment and response.
Complex Site Conditions
Perimeter environments may contain vibration generated by roads, machinery, wind, rain, wildlife, maintenance work or nearby operations.
Configured Event Categories
Event analytics can help distinguish human activity, vehicle movement, excavation, environmental activity and other configured event categories.
Operator Verification
Classification can help reduce unwanted alarms and provide operators with more relevant information for verification and response.
Classification performance depends on sensing cable installation, site conditions, event signatures, system configuration and classification tuning.
APPLICATION AREAS
Perimeter Protection Across Critical Sectors
FOTAS DAS can be configured for different site layouts, terrain conditions and security requirements.
Power and Utilities
Power stations, substations and energy infrastructure.
Data Centers
Data centers, telecom facilities and network hubs.
Transportation
Airports, seaports and transportation facilities.
Oil and Gas
Refineries, processing plants and remote energy sites.
Industrial Facilities
Factories, warehouses and storage areas.
Mining and Renewables
Mines, solar farms and remote generation facilities.
Government and Defense
Military, government and high-security installations.
Correctional Facilities
Prisons and controlled-access compounds.
Borders and Corridors
National borders and remote security corridors.
Buried and Concealed Detection
Buried sensing cable can support concealed detection zones
where visible fencing is impractical or where hidden monitoring
is preferred. Existing fiber routes may also be evaluated for
distributed sensing when their cable construction and
installation conditions are suitable.
GLOBAL REFERENCE PROJECTS
FOTAS Deployment Experience
FOTAS technologies have been deployed in perimeter security projects across different regions and operating environments.
Reference applications include the Çamlıca TV Tower in Istanbul, the Tasiast gold mine in Mauritania, solar facilities in Brazil and high-security prisons in Mexico.
These projects provide practical deployment experience across urban, industrial, mining, renewable energy and remote environments. They also demonstrate the use of FOTAS across different perimeter layouts, terrain conditions and security integration requirements.
SYSTEM INTEGRATION
Part of a Layered Security Architecture
A typical DAS perimeter security system combines distributed sensing, event analytics, alarm management and interfaces with existing security infrastructure.
System Components
- Fiber optic sensing cable
- DAS interrogator
- Event analytics software
- Alarm management and visualization
Integration Platforms
- CCTV and video management systems
- Access control systems
- GIS and security management platforms
- SCADA and command-and-control systems
Supported Workflows
- Alarm generation
- Camera cueing
- Event visualization and recording
- Operator notification and escalation
Any automated response should be defined according to the approved site security concept, system architecture and operational procedures.
WITH FOTAS, SECURITY STARTS AT THE EDGE
Distributed Sensing for Layered Perimeter Protection
Continuous Distributed Monitoring
Monitor physical activity across the complete installed sensing route rather than only selected sensor points.
Real-Time Detection and Localization
Identify where a disturbance occurs along the protected boundary to support a faster, targeted response.
Configurable Event Classification
Assign detected signatures to configured event categories according to the site security concept.
Fence-Mounted and Buried Deployment
Select fence-mounted, buried or hybrid sensing routes to match the barrier and terrain conditions.
Passive Field Sensing
The sensing cable requires no electrical power or powered electronic sensors along the protected route.
Layered Security Integration
Connect detection information to CCTV, access control and command-and-control platforms.
The DAS interrogator, servers, communication equipment and analytics platform remain active system components and require electrical power and suitable protection.
PERIMETER SECURITY ENGINEERING
Discuss Your Perimeter Security Requirements
Evaluate sensing cable deployment, detection zones, event categories and security system integration with the FOTAS engineering team.