GROUND-PENETRATING RADAR (GPR)

Ground Penetrating Radar (GPR) image subsurface structures by transmitting short electromagneticpulses into the ground and by receiving the reflections. This is considered as being one of the most promising technologies for close detection and identification of buried Anti-Personnel (AP) Landmines, due to its ability of detecting non-metallic objects in the sub-surface. As the technology progressed, GPR started finding applications in civil as defense sectors. The GPR technology addresses the feasibility of detection as well as identification of buried objects. The subject (GPR), with electromagnetic methods have proven to be, thus far, one of the most successful techniques for rendering the ground and its contents

Salient Features:

  • Ability to detect various metallic and non-metallic targets up to a depth of 1m or more.
  • It can also classify explosives and non-explosives.
  • For another application(layer thickness, concealed pipe detection).
SNo Specifications Details
1 Detection technology Ground penetrating radar – SFCW based
2 Mobility Hand held man portable
3 Dimensions (approx.) Length: 150 cm, Diameter: 30 cm, Height: 40 cm Size of hard case: 75 cm x 55 cm x 40 cm
4 Detection and Detection Performance Specifications
(a) Control over working depth Approximately 1m
(b) Detection sensitivity Capable of detection of selected targets in maximum types of soils.
(c) Detection performance to include clear detection of:-
  1. Low metal content objects
  2. IEDs
  3. Non conductive material
5 Output indicator Audio with external speaker /headphone
6 Sensor Specifications
(a)Transmitter characteristics GPR stepped frequency with centre frequency of 1500 MHz
(b) Transmitted power +12-15 dBm (typical)
(c) Spatial resolution 10 cm

Results

  • Air Cavity was detected inside the ground with the aid of a GPR system
  • GPR Data clearly showing the location of tank mine inside the ground
  • GPR data for Metal Box indicates that the box is detected and identified
  • Visual Output