Research Several Technology Problem On Applying Ground Penetration Radar For Pavement Detection

At present superhighway construction is developing quickly, the request to quality of highway construction and detection of the transportaition and management have been more and more high, detecting radar has characteristics such us reaching quickly, simple, have no abrasion, nicety and can detect in time etc, which in the trend of gradually replacing traditionaldetecting method has been become research hotsport in nowadays industry of highway detection. The aim of this research is to do more exploring work to the technique problems that exist in the application in the highway detection. And reliability and practicability of detecting radar will have been much improved. This thesis will research to some technique problem us following.(1)lucubrate the theory of detecting radar to highway detecting maimly in clued of feasibility research of detecting radar to road surface structure thickness and concealed bug (lax mezzanine,cranny,doff,solidity,containing water odds etc).(2) As the base parameters of detecting radar have not been systemic researched and mensurations have not been unite which direct affect measure effect. so that we develop the researches to different material's electricity Parameter and testing methods, mensurate every road surface material' electricity medium constant (or wave speed) constant value and distributing range, cooperate with a few bore validate, and put forward first-rank mensurate method to parameter mensuration.(3) To the characteristics of road surface samdwich easy appear time after time reflect wave and lie concealed bug's end can form reelreflect wave, in order to distill usefulness signal of road surface bug abnorm exploreland rader. picture efficiencily and improve it's data processing level, we research new technique and method to picture data processing of explore land radar ,make use of small wave analyse theory to set up data processing model, then radar's picture SNR can be heighren and distinguish rate can be buildup, as well as workout relevant DP software.(4) we bury complete reflect metals plate in typical section of highway's each dividing layers and carry through field test. for which we can investigate radar Hertzian waves' reflect character in the each lay of road structure and set up distinguish standard to radar picture , then put forward each lie concealed bug's abnormity character and distinguish standard.