Quis enim aut eum diligat quem metuat, aut eum a quo se metui putet? Coluntur tamen simulatione dumtaxat ad tempus. Quod si forte, ut fit plerumque, ceciderunt, tum intellegitur quam fuerint inopes amicorum. Quod Tarquinium dixisse ferunt, tum exsulantem se intellexisse quos fidos amicos habuisset, quos infidos, cum iam neutris gratiam referre posset.

Quis enim aut eum diligat quem metuat, aut eum a quo se metui putet? Coluntur tamen simulatione dumtaxat ad tempus. Quod si forte, ut fit plerumque, ceciderunt, tum intellegitur quam fuerint inopes amicorum. Quod Tarquinium dixisse ferunt, tum exsulantem se intellexisse quos fidos amicos habuisset, quos infidos, cum iam neutris gratiam referre posset.

Quis enim aut eum diligat quem metuat, aut eum a quo se metui putet? Coluntur tamen simulatione dumtaxat ad tempus. Quod si forte, ut fit plerumque, ceciderunt, tum intellegitur quam fuerint inopes amicorum. Quod Tarquinium dixisse ferunt, tum exsulantem se intellexisse quos fidos amicos habuisset, quos infidos, cum iam neutris gratiam referre posset.
GROUND PENETRATING RADAR (GPRS)
                GEMSOL UK Ltd is an expert in GPRS method deployment and GPRS Survey. 
                         
                      GPR has been used in the following applications: 
Archaeological investigations                                                                          Borehole inspection 
Bridge deck analysis                                                                                           Building condition assessment
Contaminated land investigation   Detection of buried mines (anti-personnel and anti-tank) 
Evaluation of reinforced concrete                                                                   Forensic investigations 
Geophysical investigations                                                                                Airport runway investigations
Geotechnical investigations                                                                            Civil engineering investigations
Pipes and cable detection                                                                                   Planetary exploration 
Rail track and bed inspection                                                Remote sensing from aircraft and satellites 
Road and motorway condition survey                                                           Security applications 
Snow, ice and glacier                                                                                            Timber condition 
Tunnel linings                                                                                                          Wall condition
ADVANTAGE OF GPR
  • High speed recording (8 Km / Hr)
  • Able to detect voids and trenchs
  • Able to determin depths and lenghts of targets
  • Colors improve data quality
  • Easy to handle
  • Changable frequency (1mhz --5ghz)
  • Realtime display unit represent cross sectional profil
  • Used is lot of applications

GPR PRINCIPLE 

Ground penetrating radar produces a continuous cross- sectional profile or record of subsurface features, without drilling, probing, or digging. GPR operates by transmitting pulses of ultra high frequency electro-magnetic (EM) waves down into the ground through a transmission antenna. When the transmitted signal enters the ground, it contacts objects or subsurface strata with different electrical conductivities and dielectric constants. A certain amount of energy is reflected and picked-up by a receiving antenna, the remaining energy continue to pass into the ground to be further reflected, until it finally spreads and dissipates with depth as shown in Fig. 1. The control unit registers the reflections against two-way travel time in nanoseconds and then amplifies the signals. The output signal voltage peaks are plotted on the GPR profile as different colour bands by the digital control unit. Ground penetrating radar waves can reach depths up to 100 feet (30 meters) in low conductivity materials such as dry sand or granite. The depth range of GPR is limited by the electrical conductivity of the ground, the transmitted center frequency and the radiated power.
EXAMPLE 1
                        ARCHAEOLOGY SEARCH

Lyminge Kent UK
search for ancient tomb and medieval
 post church under an existing church
 as well as are current cemetery.
System:Mala Geoscience  
RAMAC X3M console
 Antenna 450mhz
Data: .Rd3


EXAMPLE 2 
                            ARCHAEOLOGY SEARCH               

Vitry sur Seine Paris FR
Search for ancien castel destroyed
during the revolution.Update of the foundations of     the castle of a well with underground detection of another underground
 opening of an entrance and exploration 
System:US RADAR  antenna 450mhz 
DATA: .RAD

EXAMPLE 3
                            GEOTECHNIC               

South  east of France
Ancient foundation search 
Mapping aleas 
Mapping of the concrete slab 
substratum determination and mapping

System:US RADAR  antenna tri-frequency
DATA: .RAD

EXAMPLE 4
                            FORENSIC ARCHAEOLOGY               

South  east of France
Ancient foundation search 
Ancien tomb search
Mapping aleas 
Mapping of the concrete slab 
substratum determination and mapping

in association with our Raman portable spectrometer laboratory included IR FT and luminscence

System: GSSI Radar GPRS  antenna 450mhz
DATA: .DTZ

SPECIFIC INFORMATIONS