Situational Monitoring and Perimeter Protection Solutions
Based on Fiber Optic Cable
Situational Monitoring and Perimeter Protection Solutions
Based on Fiber Optic Cable
The system operation is based on the principle of coherent reflectometry. Optical pulses are repetitively sent into the monitored fiber, where a very small fraction of light is backscattered due to material non-uniformities. Fiber microdeformations caused by seismo-acoustic signals affect this backscattered signal. The signal changes are continuously monitored and analyzed to identify the location and specifics of the vibro-acoustic event detected by the fiber.
The system operation is based on the principle of coherent reflectometry. Optical pulses are repetitively sent into the monitored fiber, where a very small fraction of light is backscattered due to material non-uniformities. Fiber microdeformations caused by seismo-acoustic signals affect this backscattered signal. The signal changes are continuously monitored and analyzed to identify the location and specifics of the vibro-acoustic event detected by the fiber.
Low Cost
Savings on equipment, installation, and operation; maintenance-free sensor
Interference Immunity
Stable operation under electromagnetic interference and lightning discharges
Record-breaking Range
Covers up to 65 km per single arm (up to 130 km across two channels)
Fine-tuning
Neural networks optimize threat and event classification algorithms
About the system
The system operation is based on the principle of coherent reflectometry. Optical pulses are sent into the fiber optic cable, and light is backscattered due to material non-uniformities. When the fiber undergoes microdeformations caused by vibrations or sounds, the backscattered signal changes. By analyzing these changes, the system identifies the precise location and characteristics of the impact. This allows for the detection of disturbance sources, such as the location of people, vehicles, or pipeline leaks.
K-DAS allows to detect various types of events throughout the fiber deployment zone with an accuracy of 10 meters including approach to the guarded zone, movement along the guarded zone, or trespassing the monitored zone border. Detection accuracy increases greatly if several adjacent monitoring zones can be arranged. Once a person or vehicle approach is detected, or if ground work in progress near the protected object is registered, K-DAS system immediately transmits an alarm message to the operator's computer indicating the source location. The system permits to detect any kind of activity that is causing water or soil vibrations. Installation of the system is customized, and Ksense specialists fine tune the system configuration taking into consideration the particular features of the deployment place and specific customer needs.
Spatial Resolution and Event Classification Metrics for K-DAS Phase-OTDR
Spatial Resolution and Event Classification Metrics for K-DAS Phase-OTDR
K-DAS allows to detect various types of events throughout the fiber deployment zone with an accuracy of 10 meters including approach to the guarded zone, movement along the guarded zone, or trespassing the monitored zone border. Detection accuracy increases greatly if several adjacent monitoring zones can be arranged. Once a person or vehicle approach is detected, or if ground work in progress near the protected object is registered, K-DAS system immediately transmits an alarm message to the operator's computer indicating the source location. The system permits to detect any kind of activity that is causing water or soil vibrations. Installation of the system is customized, and Ksense specialists fine tune the system configuration taking into consideration the particular features of the deployment place and specific customer needs.
One of the main K-DAS applications is the development of early detection systems for critical infrastructure objects. Since acoustic sensor sensitivity permits to detect signals from sources located at dozens or even hundreds meters away from fiber, the system operator gets an alarm signal well before the trespassing.
K-DAS system is a 3U device unit to be installed in a telco rack. The unit has three slots for: receiver and transmitter board (coherent reflectometer), amplifier module, and industrial computer for data processing and transfer to a remote server. K-DAS system can be operated both as a stand alone unit and as a part of an integrated security system (API and Ethernet output are available).
K-DAS system is a 3U device unit to be installed in a telco rack. The unit has three slots for: receiver and transmitter board (coherent reflectometer), amplifier module, and industrial computer for data processing and transfer to a remote server. K-DAS system can be operated both as a stand alone unit and as a part of an integrated security system (API and Ethernet output are available).
Areas of application
Perimeter guarding
Protection of airports, seaports, large industrial enterprises, high-security facilities and military ranges.
Pipelines
Informs about the approach to protected pipeline of heavy equipment and allows you to detect tie-ins.
Transport
Allows you to register the work carried out along the railway tracks, measure the speed of trains, record the facts of dragging cargo in case of emergencies
Seismic Exploration
DAS systems for geophysics, near-surface engineering seismic surveys, and upstream asset integrity monitoring.
Frequently Asked Questions about DAS Technology and K-DAS
Distributed Acoustic Sensing (DAS) is an optoelectronic technology that utilizes standard optical fiber as a continuous, distributed array of acoustic and vibration sensors. The system enables real-time detection, localization, and classification of physical events along the entire cable route without requiring field sensors or power infrastructure along the perimeter.
DAS is based on Phase-Sensitive Coherent Optical Time-Domain Reflectometry (Phase-OTDR / C-OTDR). High-coherence laser pulses are launched into the fiber optic cable. Mechanical stress, acoustic vibrations, or seismic waves cause microscopic fiber strains that modulate the phase and intensity of Rayleigh backscattered light. The interrogator unit analyzes these interference patterns to determine the exact coordinates and acoustic signatures of the disturbance.
No. The system uses standard single-mode optical fiber (ITU-T G.652) installed in ground trenches, mounted on perimeter fences, or pulled through existing telecommunications conduits. The optical sensing line is 100% passive; electrical power and network connectivity are only required at the central processing unit (interrogator) located in an equipment room or server rack.
Key advantages include long monitoring range (up to 65 km per single arm and up to 130 km across two channels per unit), completely passive field infrastructure (zero remote power required), covert underground deployment, immunity to electromagnetic interference (EMI) and lightning strikes, and simultaneous multi-target detection and tracking across the entire zone.
The K-DAS system monitors up to 65 km of optical fiber per single arm (up to 130 km across two channels per unit) with event positioning accuracy within 5–10 meters. For compact and medium-scale perimeters, the K-DAS Light unit provides coverage up to 10 km on fence lines and up to 20 km in buried ground. The hardware is housed in a standard 19-inch rack-mount chassis (2U for K-DAS Light) for seamless installation in telecommunication cabinets.
K-DAS classifies a wide spectrum of events: personnel movements (walking, crawling, running), wheeled and tracked vehicle traffic, manual and mechanized excavation (digging, drilling), and fence climbing/tampering. For pipeline integrity, it includes dedicated classifiers for product leaks and inline inspection tool (PIG) tracking. In railway transport, it detects wheel flat spots and rolling stock defects in real time.
K-DAS integrates with enterprise security and industrial automation platforms: a certified integration plugin is available for Genetec Security Center (Restricted Security Area / RSA module) in perimeter security applications, while telemetry, event coordinates, and alarms are transmitted to third-party SCADA, PSIM, and dispatch platforms via open industrial protocols including OPC UA, Modbus TCP, and REST API over Ethernet.
Equipment development, engineering, and assembly are localized in the Republic of Kazakhstan (Ksense LLP). The products are officially listed in the National Registry of Kazakhstani Goods Manufacturers.
K-DAS functions as a high-density distributed IIoT sensing platform. By converting hundreds of kilometers of passive optical fiber into a continuous array of virtual acoustic and vibration sensors, the system gathers real-time physical telemetry along pipelines, perimeter fences, and transportation networks. Leveraging edge AI processing, the interrogator transforms raw acoustic data into structured event streams, anomaly alerts, and telemetry, transmitting them via open standard protocols (REST API, MQTT, OPC UA) to enterprise SCADA systems and predictive maintenance platforms.
Yes. K-DAS integrates seamlessly with passive optical microphones connected directly to standard single-mode fiber lines without requiring field power or copper cabling. This enables high-fidelity acoustic signature capture. In critical and civil infrastructure management (e.g., commercial airports, energy facilities, and industrial plants), it allows security operators to detect acoustic signatures of low-flying commercial UAVs or ultralight aircraft, routing alarms into higher-level PSIM/VMS platforms and emergency notification systems.