Standalone LBL configuration

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.

Fig. 8. Positioning performance prediction for standalone LBL positioning. The transponder locations are indicated by the red markers in an equilateral triangle near the origin. The contours show lines of constant HDOP.

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