01337501

Component

Past studies have shown that most inertial profiler verification procedures are conducted through repeated profile measurements on test sections with known profiles. This type of an evaluation can erroneously affect inertial profile results because of uncontrollable parameters such as profiler equipment, analytical software, and operator variables. In order to improve the accuracy of inertial profiler certifications, a laboratory simulation method for inertial profilers has been developed. This laboratory verification procedure uses an apparatus that combines sinusoidal vertical displacements of various frequencies and amplitude levels. As a result, errors attributed to operator variables can be excluded, and errors induced by profiler and software can be further identified. This study utilizes the Hilbert-Huang Transform (HHT) to improve the profiler verification process by reducing measurement noise and creating a more stable signal in different frequency-amplitude combinations. In addition, the noise source can also be identified by applying HHT, which can provide guidance on further profiler verification enhancements.

The DVD lists the title of this paper as: Application of Hilbert-Huang Transform in Laboratory Method of Inertial Profiler Verification.

01329018

11-1130

English

23p

2011

Transportation Research Board 90th Annual Meeting

DVD

Figures; Photos; References (23) ; Tables (3)

Equipment; Errors; Guidelines; Laboratory tests; Simulation; Software; Test sections

Hilbert-Huang transform

Inertial profilers; Sinusoidal waves; Verification

Highways; Maintenance and Preservation; I61: Equipment and Maintenance Methods

Transportation Research Board Annual Meeting 2011 Paper #11-1130

TRIS, TRB

Feb 17 2011 5:41PM