this is for holding javascript data
Brian Jackson edited subsection_Converting_Between_the_Observed__.tex
over 8 years ago
Commit id: d989aa48e73f00c53464bc32cdca2791883ed5a6
deletions | additions
diff --git a/subsection_Converting_Between_the_Observed__.tex b/subsection_Converting_Between_the_Observed__.tex
index ecb61bd..4897b09 100644
--- a/subsection_Converting_Between_the_Observed__.tex
+++ b/subsection_Converting_Between_the_Observed__.tex
...
$P_{\rm act}(b) = P_{\rm obs}\left[ 1 + \left( \dfrac{2b}{\Gamma_{\rm act}} \right)^2 \right]$. To calculate the integral, we also need to re-cast the upper limit $b_{\rm max}$ in terms of the observed parameters, $b_{\rm max} = \frac{1}{2} \sqrt{\Gamma_{\rm obs}^2 - \Gamma_{\rm min}^2}$. This expression shows, for example, that for $\Gamma_{\rm obs} = \Gamma_{\rm min}$, we should only consider $b = 0$, a direct encounter. The integral to convert from $\rho(P_{\rm act}, \Gamma_{\rm act})$ to $\rho(\Gamma_{\rm obs}, P_{\rm obs})$ is therefore
\begin{eqnarray}
\label{eqn:convert_from_actual_to_observed_density}
\rho(\Gamma_{\rm obs}, P_{\rm obs}) = & \int_{b = 0}^{b_{\rm max}} &
& f\ \rho(\Gamma_{\rm act}(b), P_{\rm
act}(b))\ act}(b)) &\ \dfrac{2b\ db}{b_{\rm max}^2} \\
= & \int_{b = 0}^{\frac{1}{2} \sqrt{\Gamma_{\rm obs}^2 - \Gamma_{\rm min}^2}} &
& f\ \rho(\Gamma_{\rm act}(b), P_{\rm
act}(b))\ act}(b))& \ \left( \Gamma_{\rm obs}^2 - \Gamma_{\rm min}^2 \right)^{-1}\ 4b\ db.
\end{eqnarray}
Figure \ref{fig:uniform_actual_distribution_to_observed_distribution} shows the result for a uniform distribution for underlying values, $\rho(\Gamma_{\rm act}, P_{\rm act}) = \left( P_{\rm max} - P_{\rm min} \right)^{-1}\ \left( \Gamma_{\rm max} - \Gamma_{\rm min} \right)^{-1}$ and compares it to a simulated dust devil survey (blue circles).