From b0ac372228452c906b0a53da0b0796548585a69a Mon Sep 17 00:00:00 2001 From: youainti Date: Thu, 15 Jul 2021 16:42:31 -0700 Subject: [PATCH] just checking in what I have so far in order to merge. --- CurrentWriting/sections/01_LawsOfMotion.tex | 8 ++++---- CurrentWriting/sections/03_SurvivalAnalysis.tex | 10 +++++++--- 2 files changed, 11 insertions(+), 7 deletions(-) diff --git a/CurrentWriting/sections/01_LawsOfMotion.tex b/CurrentWriting/sections/01_LawsOfMotion.tex index 4465842..1c2efbb 100644 --- a/CurrentWriting/sections/01_LawsOfMotion.tex +++ b/CurrentWriting/sections/01_LawsOfMotion.tex @@ -50,9 +50,9 @@ Debris is generated by various processes, including: \begin{itemize} \item Naturally occuring debris \item Satellite launches, operations, failures, or intentional destruction. - \item Collisions between satellites - \item Collisions between satellites and debris - \item Collisions between debris + \item Collisions between two satellites + \item Collisions between a satellite and debris + \item Collisions between pieces of debris \end{itemize} Debris leaves orbit when atmospheric drag slows it down enough to reenter the atmosphere. @@ -60,7 +60,7 @@ These effects can be represented by the following general law of motion. \begin{align} D_{t+1} = (1-\delta)D_t + g(D_t) + \gamma(\{s^j_t\},D_t) + \Gamma(\{x^j_t\}) \end{align} -I formulate this more specifically as: +For simplicity, I formulate this more specifically as: \begin{align} D_{t+1} = (1-\delta)D_t + g(D_t) + \sum^N_{i=1} \gamma l^i(\{s^j_t\},D_t) diff --git a/CurrentWriting/sections/03_SurvivalAnalysis.tex b/CurrentWriting/sections/03_SurvivalAnalysis.tex index 20d264b..fc68a63 100644 --- a/CurrentWriting/sections/03_SurvivalAnalysis.tex +++ b/CurrentWriting/sections/03_SurvivalAnalysis.tex @@ -2,15 +2,19 @@ \graphicspath{{\subfix{Assets/img/}}} \begin{document} -In his dissertation \cite{RaoDissertation} briefly examines the "survival rates" of a satellite constellation. -I've applied this to my model and extended the results. +In his dissertation \cite{RaoDissertation} briefly examines the ''survival rates" of +a satellite constellation. +Applying the same analysis to this formulation of the law of motion +for satellite stocks (\cref{Add in}) clarifies some details on risk burdens +with highly asymmectical conditions. %This approach allows us to construct a elasticity of survival and satellite additions, %i.e. an elasticity of risk. %I should probably look up how to analyze changes in risk level and quantitative representations etc. % Marginal survival. -The survival rate for a constellation $i$ is defined as $R^i = 1-l^i(\cdot)$, i.e. the proportion of satellites- +The survival rate for a constellation $i$ is defined as $R^i = 1-l^i(\cdot)$, +i.e. the proportion of satellites that were not lost (degraded nor destroyed) between period $t$ and $t+1$. Thus the marginal survival rate represents the additional loss of satellites due to a slightly larger constellation or fleet stock.