Applying the CRLB to standalone LBL positioning enables the designer to predict the influence of transponder geometry, host location and range uncertainty on the LBL solution. Fig. 8 shows the results of this analysis. To generate these results the CRLB (equation (14)) is evaluated at each point in the two-dimensional space. The figure shows the results for a prototypical configuration, where the transponders are arranged in an equilateral triangle. The specific example shown in Fig. 8 illustrates the general process. This process has proven useful in deciding how to configure a LBL solution or deciding the level of range precision necessary to meet a particular performance specification.
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