Author: Lev Khazanovich
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 81
Book Description
The objective of this research was to develop a procedure for nondestructive assessment of pavement thickness using 3D ground penetrating radar (3D GPR). The software developed in this study can analyze the data sets collected with either 27- or 121- transmitting and receiving pair configurations. It uses two approaches to determine asphalt thickness: analysis of individual pairs of antennas time histories along with the user-provided dielectric constant for the asphalt layer; and analysis of groups of signals from transmitting and receiving antennas with various spacing but with a common mid-point using the Modified Extended Common Mid-Point (MXCMP) method. The MXCMP method is a generalization of the Extended Common Mid-Point (MXCMP) method for analysis of more than two antenna pair signals with the same mid-point.
Pavement Thickness Evaluation Using 3D Ground Penetrating Radar
Author: Lev Khazanovich
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 81
Book Description
The objective of this research was to develop a procedure for nondestructive assessment of pavement thickness using 3D ground penetrating radar (3D GPR). The software developed in this study can analyze the data sets collected with either 27- or 121- transmitting and receiving pair configurations. It uses two approaches to determine asphalt thickness: analysis of individual pairs of antennas time histories along with the user-provided dielectric constant for the asphalt layer; and analysis of groups of signals from transmitting and receiving antennas with various spacing but with a common mid-point using the Modified Extended Common Mid-Point (MXCMP) method. The MXCMP method is a generalization of the Extended Common Mid-Point (MXCMP) method for analysis of more than two antenna pair signals with the same mid-point.
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 81
Book Description
The objective of this research was to develop a procedure for nondestructive assessment of pavement thickness using 3D ground penetrating radar (3D GPR). The software developed in this study can analyze the data sets collected with either 27- or 121- transmitting and receiving pair configurations. It uses two approaches to determine asphalt thickness: analysis of individual pairs of antennas time histories along with the user-provided dielectric constant for the asphalt layer; and analysis of groups of signals from transmitting and receiving antennas with various spacing but with a common mid-point using the Modified Extended Common Mid-Point (MXCMP) method. The MXCMP method is a generalization of the Extended Common Mid-Point (MXCMP) method for analysis of more than two antenna pair signals with the same mid-point.
Accuracy Study of Pavement Layer Thickness Evaluation Using Ground Penetrating Radar
Author: Kenneth R. Maser
Publisher:
ISBN:
Category :
Languages : en
Pages : 13
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 13
Book Description
Evaluation of Automated Pavement Thickness Using Radar
Author: W. M. Kim Roddis
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 60
Book Description
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 60
Book Description
Evaluation of Ground Penetrating Radar Applications for Pavement and Bridge Management
Author: Kenneth R. Maser
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 90
Book Description
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 90
Book Description
Evaluation of the Accuracy of Pavement Surface Layer Thickness Measured with Ground Penetrating Radar
Author: Frazier Parker
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 132
Book Description
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 132
Book Description
Ground Penetrating Radar
Author: David Allen Willett
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 58
Book Description
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 58
Book Description
High Accuracy Pavement Thickness Measurement Using Ground Penetrating Radar
Author: John Wenzlick
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 140
Book Description
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 140
Book Description
Pavement Evaluation Using Ground Penetrating Radar
Author: Yuejian Cao
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 102
Book Description
The objective of this project was to develop an efficient and accurate algorithm for the back analysis of pavement conditions measured by ground penetrating radar (GPR). In particular, more reliable information about the thickness of the asphalt concrete (AC) layer and the dielectric constants of the AC and base layers were obtained from the electromagnetic field measurements performed on roads using GPR. A brief introduction to the existing methodology for interpreting GPR images is reviewed, and the theory associated with electromagnetic wave propagation in layered structures is described. Utilizing the full waveform solution, algorithms for back analysis of pavement conditions were developed based on the artificial neural network approach and the frequency response function concept. Software called ''GopherGPR'' uses the GPR signal from one antenna to interpret the characteristics of the AC layer with no assumptions on material properties. Thus, the new technique has the capability of providing information not previously available.
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 102
Book Description
The objective of this project was to develop an efficient and accurate algorithm for the back analysis of pavement conditions measured by ground penetrating radar (GPR). In particular, more reliable information about the thickness of the asphalt concrete (AC) layer and the dielectric constants of the AC and base layers were obtained from the electromagnetic field measurements performed on roads using GPR. A brief introduction to the existing methodology for interpreting GPR images is reviewed, and the theory associated with electromagnetic wave propagation in layered structures is described. Utilizing the full waveform solution, algorithms for back analysis of pavement conditions were developed based on the artificial neural network approach and the frequency response function concept. Software called ''GopherGPR'' uses the GPR signal from one antenna to interpret the characteristics of the AC layer with no assumptions on material properties. Thus, the new technique has the capability of providing information not previously available.
Ground Penetrating Radar Surveys to Characterize Pavement Layer Thickness Variations at GPS Sites
Author: Kenneth R. Maser
Publisher: Strategic Highway Research Program (Shrp)
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 68
Book Description
A new nondestructive, noncontact method for thickness measurement is available and can be implemented from a survey vehicle moving at highway speed. The technology incorporates horn antenna radar equipment coupled with customized processing software. This report describes an accuracy evaluation of this technology in which results from 10 Strategic Highway Research Program Long Term Pavement Performance (SHRP-LTPP) asphalt pavement sections in 10 states were compared to core data. The results were evaluated and reported in two steps--blind and calibrated.
Publisher: Strategic Highway Research Program (Shrp)
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 68
Book Description
A new nondestructive, noncontact method for thickness measurement is available and can be implemented from a survey vehicle moving at highway speed. The technology incorporates horn antenna radar equipment coupled with customized processing software. This report describes an accuracy evaluation of this technology in which results from 10 Strategic Highway Research Program Long Term Pavement Performance (SHRP-LTPP) asphalt pavement sections in 10 states were compared to core data. The results were evaluated and reported in two steps--blind and calibrated.
Implementation of Pavement Evaluation Tools
Author: Shuling Tang
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 25
Book Description
The objective of this project was to render the Falling Weight Deflectometer (FWD) and Ground Penetrating Radar (GPR) road assessment methods accessible to field engineers through a software package with a graphical user interface. The software implements both methods more effectively by integrating the complementary nature of GPR and FWD information. For instance, the use of FWD requires prior knowledge of pavement thickness, which is obtained independently from GPR. 17.
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 25
Book Description
The objective of this project was to render the Falling Weight Deflectometer (FWD) and Ground Penetrating Radar (GPR) road assessment methods accessible to field engineers through a software package with a graphical user interface. The software implements both methods more effectively by integrating the complementary nature of GPR and FWD information. For instance, the use of FWD requires prior knowledge of pavement thickness, which is obtained independently from GPR. 17.