1 / 12

BTS – Devices II

BTS – Devices II. Sensors Detection, Surveillance, Protection. Sensor Sense. Monitors border for incursions Beyond border At border Inside border Triggers alarms Transmits triggers and data to control centers (CC)in real-time Tracks target after crossing Responds to CC commands

keon
Download Presentation

BTS – Devices II

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. BTS – Devices II Sensors Detection, Surveillance, Protection CSE 8394

  2. Sensor Sense • Monitors border for incursions • Beyond border • At border • Inside border • Triggers alarms • Transmits triggers and data to control centers (CC)in real-time • Tracks target after crossing • Responds to CC commands • Triggers flares/light CSE 8394

  3. Types of Sensors • Deployment classification: Combination of mobile and fixed • Satellite • Airborne • Maritime • Ground-based • Technology/ application: • Seismic • Radar • Infrared • Magnetic • Sonar • Trip-flares • Fiber-optic • CCD • Laser • Fence Technologies CSE 8394

  4. Selection Factors • External • Threat • Environment • Legal restrictions • Sensor characteristics • Resolution • Coverage • Power requirement • Communication • Sensor functionality • Price • Ease of installation and maintenance CSE 8394

  5. Levels of Sensor Integration • Level 0 – Baseline • Passive sensors with one way communication • Level 1 • Control center can manually adjust sensors • Remote software updates • Detection threshold control • Level 2 – Co-located active sensors • Electro-optical • Thermal imaging • Level 3 – Full integration • Passive sensors cue cameras for images • Access to database • Automatic sensor fusion CSE 8394

  6. Seismic Sensors • Used to detect activities on ground/underground • Stealth detection • Two types • Inertial seismometers - measure ground motion relative to an inertial reference (a suspended mass), • Strainmeters or extensometers - measure the motion of one point of the ground relative to another • Inertial motion more sensitive than the differential motion • Implementation more challenging for Strainmeters CSE 8394

  7. Microwave Motion Detectors • Floods an area with an electro-magneitic field • Any movement in the zone disturbs the field and sets off an alarm • Two types • Bistatic • Monstatic – good for quick deployment • Limitations • Slow motion may be undetected • External interference may cause false positives CSE 8394

  8. Electrostatic Field Disturbance Sensors • Generate an electrostatic field between/around an array of wire conductors • Sensors detects changes/distortions • Ideal for fences, walls & roofs • Very sensitive • Limitations • Extraneous movements will trigger CSE 8394

  9. Video Motion Detection (VMD) Sensor • Event detection and observation of event in progress • Detection through observing changes in camera’s field of view • Ideal with overt/covert cameras CSE 8394

  10. Micro-Strain Fiber Optic Sensors • New and advanced in-ground or fence mounted detection system utilising a multi core fiber • Detect minute vibrations even from sounds, via deflections in the laser beam • Long coverage • Very low false alarms • Quick installation (just 10 cm under ground) CSE 8394

  11. Leaky Coaxial Cable Sensors • Used for covert detection • Two coaxial cables buried under ground to generate invisible filed • Could be in the same conduit • Usually 1 m apart • Disturbance in the filed triggers alarm CSE 8394

  12. Other Sensors • Microphonic cable fence distaurbance sensors • Stereoscopic video motion detection system • Virtual fence • Combination of acoustic, seismic, and IR sensors to detect, locate, and identify human activity in a protected area • Sophisticated IDDF (Identification and Direction Finding) algorithms • Underwater sensors • Sonar sensors CSE 8394

More Related