Figure 4. Optimal search distributions for a familiar route.

A. Probability density heat map for a familiar route (straight line segment) between and , with Gaussian uncertainty whose standard deviations . B. The marginal optimal search density for a total search effort, , of 1, 2 or 4 arbitrary units. Note that the integral under each search density function equals the total search effort [32]. C and D as per A and B, respectively, with (twice the width of the uncertainty distribution as A).