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Table 5.3: Summary of statistical comparison of radial and tangential current mmponents
computed h m the simulations. The mean and standard deviations of the
three datasets are denoted by - and m, respectiwly, and the standard deviation of the
regression of y on 2 is labelled 8. Caes (1),(2) and (3) correspond to azimuthal m-
tents of 12'. 20' and 36' respect~veiy. TU table summarizes the statistics associated
with the scattergrams of Figure 5.6
the variable increases (Montgomery and Peek 1531). An analow here is the differme
in the slope ermr of a line estimated from a smd number of 'closely spazed. points
as oppmed to s large number which are 'widely spaced'. L the ammt we, 92% of
the total variation seen in the tangential components is explained by the regression.
5.3.2 Real Data
Figure 5.7 displays the results of the paformanee of the algorithm, using real radar
data, in the form of scattergr-. The graphs illmtrate that the emr in the tangen-
tial component estimate may be dependent on the angular extent of the sector. This
was also observed in the simulated data examples. However, the variability of the
scatter about the unity slope line for the tangential component estimates are quite
different from the simulated examples.