Acoustic Ranging Research

One of our approaches to work on localization has focused on building and experimenting with acoustic ranging. This work was performed by Lewis Girod, beginning at USC/ISI, currently at UCLA in the LECS lab.

L. Girod, "Development and Characterization of an Acoustic Rangefinder", USC-CS-TR-00-728, 2000. .ps .pdf
Powerpoint slides describing the project. .ppt
The raw data (such as it is). This data was collected in LOS conditions.

We are also working towards a larger goal of 3-D, fine-grained localization, constructing consistent spatial coordinate systems and locating nodes within those systems. We envision doing this using novel algorithms that both combine acoustic ranges from separate perspectives, and also combine different sensor modalities to leverage the strengths and compensate the weaknesses of different modalities.

L. Girod, D. Estrin, "Robust Range Estimation for Localization in Adhoc Sensor Networks", UCLA CS-TR-2000XX, 2000. .ps
Powerpoint slides describing the high level ideas: .ppt .ps

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