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In this simulation, the stop time was 20μs to cover both the transmitted and received signals adequately. On the other hand, the periods of the signals were on the order of 1ns. ThereforTherefore, a step ceiling of 50ps was chosen. From the above figure, you can see that the received signal starts at t = τ = 10μs. You can zoom in the graph to see the details of the transmitted and received signals. The figure below shows the results with a scale time axis limited to the interval [19.99μs, 20μs]:
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Using the equations given at the beginning of this tutorial lesson, you will find the range of your target to be 1.5km, you would have expected from your specified delay of 10μshad set in the radar echo block.
<math> R = \frac{cT_s}{2B} f_b = \frac{(3\times 10^8)(100\times 10^{-6})}{2(10\times 10^6)} \left( 10^6 \right) = 1500\text{m} </math>