Problem Statement
Transfer mobility measurements are used to help predict vibration and ground-borne noise impacts from transit and rail systems and also to evaluate the effectiveness of vibration mitigation techniques. Current methods for measuring transfer mobility between planned or existing transit facilities and nearby sensitive receivers present a number of problems. For example, high background vibration levels in busy urban environments make such measurements and analysis difficult and time consuming. Existing required measurement equipment is cumbersome and often presents logistical roadblocks. Newer, less burdensome measurement techniques need to be investigated.
 
Proposed ResearchInvestigate and recommend acceptable test parameters of current test methods such as required signal coherence, and explore newer alternative test methods such as Maximum Length Sequence technology to reduce time and expense with improved measurement quality.