Figure 10: Overlay of the Displacement Responses from Predicted Solution Using First Five Modes for Expansion and PONTOS at Five Different Locations; expansion performed using sensor configuration B Figure 11 shows the expanded output responses at five different locations in comparison with the reference experimental measurements for sensor configuration C. The measurements used for comparison purposes were not included in expansion process. Notice that at all locations except the location 7, the TRAC correlation values are 99.9+% which indicates a very good correlation of expanded data with measurements for the time period shown. For the 7th location, which is near to the fixed base of the structure, the displacement response is very small as compared to other locations as seen in Figure 11. The SNR is much smaller and hence the TRAC correlation drops to 87%. 211
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