Rearranged main layout, part way through updating sections, added sections. Updated current status in readme.

temporaryWork
youainti 5 years ago
parent 9d082f4667
commit 0c941a4335

@ -23,44 +23,50 @@
%Describe sections %Describe sections
The paper is organized as follows. The paper is organized as follows.
\cref{SEC:Environment}, describes the laws of motion Section \ref{SEC:Model}, describes the laws of motion
governing satellites and debris(\ref{SEC:Laws})%, governing satellites and debris(\ref{SEC:Laws})%,
%places limits on various measures of risk (\ref{SEC:Survival}), %places limits on various measures of risk (\ref{SEC:Survival}),
and reviews various definitions of kessler syndrome in and reviews various definitions of kessler syndrome in
the context of dynamic modeling, their advantages, and their disadvanteges (\ref{SEC:Kessler}). the context of dynamic modeling, their advantages, and their disadvanteges (\ref{SEC:Kessler}).
In \cref{SEC:Models} the dynamic problem faced by constellation operators and It then describes the dynamic problem faced by constellation operators
social planners is first described. (\ref{SEC:Operator}) and social planners (\ref{SEC:Planner}).
Finally \cref{SEC:Computation} describes the computational approach and results. Section \ref{SEC:Computation} describes the computational approach and the
results are reported in \cref{SEC:Results}.
Section \ref{SEC:Conclusion} concludes with a discussion of future changes and
%\section{Modeling the Environment}\label{SEC:Environment}
\section{Model}\label{SEC:Models}
\subsection{Laws of motion}\label{SEC:Laws}
\subfile{sections/01_LawsOfMotion} %Roughly done 2021-07-15
\section{Modeling the Environment}\label{SEC:Environment} %\subsection{Marginal survival rates}\label{SEC:Survival}
\subsection{Laws of motion}\label{SEC:Laws} %\subfile{sections/03_SurvivalAnalysis} %roughly done 2021-07-14
\subfile{sections/01_LawsOfMotion} %Roughly done 2021-07-15 % Thoughts on removal: This doesn't add much to the actual questions.
% It is interesting, but in a paper is just too much.
%\subsection{Marginal survival rates}\label{SEC:Survival} % I'll keep it here to add it back easily.
%\subfile{sections/03_SurvivalAnalysis} %roughly done 2021-07-14
% Thoughts on removal: This doesn't add much to the actual questions.
% It is interesting, but as a paper is just too much.
% I'll keep it here to add it back easily.
\subsection{Kessler Syndrome}\label{SEC:Kessler}
\subfile{sections/02_KesslerSyndrome} %roughly done before 2021-07-14
\subfile{sections/06_KesslerRegion} %roughly done before 2021-07-14
\subsection{Kessler Syndrome}\label{SEC:Kessler}
% Kessler syndrome follows laws of motion because it is the main
% threat of orbital pollution and needs to be included.
% Also, there is not really a better place to place it.
\subfile{sections/02_KesslerSyndrome} %roughly done before 2021-07-14
\subfile{sections/06_KesslerRegion} %roughly done before 2021-07-14
\subsection{Constellation Operator's Program}\label{SEC:Operator}
\subfile{sections/04_ConstellationOperator} %Reasonably done.
\section{Model}\label{SEC:Models} \subsection{Social Planner's Program}\label{SEC:Planner}
\subsection{Constellation Operator's Program}\label{SEC:Operator} \subfile{sections/05_SocialPlanner} %Reasonably done?
\subfile{sections/04_ConstellationOperator} %TODO
\subsection{Social Planner's Program}\label{SEC:Planner}
\subfile{sections/05_SocialPlanner} %TODO
\section{Computation}\label{SEC:Computation} \section{Computation}\label{SEC:Computation}
\subfile{sections/07_ComputationalApproach} %TODO \subfile{sections/07_ComputationalApproach} %needs some clarifications.
\section{Results}\label{SEC:Results}
\subfile{sections/09_Results} %TODO
\section{Conclusion}\label{SEC:Conclusion} \section{Conclusion}\label{SEC:Conclusion}
\subfile{sections/08_Conclusion} %TODO
\newpage \newpage
\section{References} \section{References}
@ -85,6 +91,9 @@ in a single place first.
%With my current computational idea; each constellation provides the same risk to each other constellation %With my current computational idea; each constellation provides the same risk to each other constellation
% That can be easily adjusted in the computational models. % That can be easily adjusted in the computational models.
\newpage
%Just for simplicity, remove later
\tableofcontents
\end{document} \end{document}
%%% Notes to keep track of %%% Notes to keep track of

@ -3,6 +3,11 @@
# TODO # TODO
- Add section to computation that includes specifications of loss and cost functions. (Pg 9) - Add section to computation that includes specifications of loss and cost functions. (Pg 9)
- Explain utility better in the constellation operators program (pg 8) especially why I refer to it as utility. Maybe rename to "benefit function"? - Explain utility better in the constellation operators program (pg 8) especially why I refer to it as utility. Maybe rename to "benefit function"?
Currently working on this. Decided to rename to benefit function.
- In training section (4.0.1.1) clarify loss function. There is the satellite loss function and - In training section (4.0.1.1) clarify loss function. There is the satellite loss function and
the estimation loss function. Need to think of names. the Approximation loss function.
- Add a conclusion - Add a conclusion
- Reorganize the sections.
Currently working on this, mostly done.

@ -79,7 +79,7 @@ for the home constellation of the additional satellite.
Note that it is reasonable to assume that the loss of satellites to collisions should be Note that it is reasonable to assume that the loss of satellites to collisions should be
increasing in the level of debris: $\parder{l^i}{D_t}{} >0$. increasing in the level of debris: $\parder{l^i}{D_t}{} >0$.
\subsection{Debris} \subsubsection{Debris}
Debris is generated by various processes, including: Debris is generated by various processes, including:
\begin{itemize} \begin{itemize}
\item Naturally occuring debris is captured from interplanetary space. \item Naturally occuring debris is captured from interplanetary space.

@ -42,7 +42,7 @@ constitutes as kessler syndrome.
\subsection{Two approaches to kessler syndrome} \subsubsection{Two approaches to kessler syndrome}
I propose to analyze kessler syndrome in two slightly more restricted I propose to analyze kessler syndrome in two slightly more restricted
fashions than \cite{RaoRondina2020}, for which I term the regions fashions than \cite{RaoRondina2020}, for which I term the regions
the $\epsilon$-kessler region and the proto-kesslerian region. the $\epsilon$-kessler region and the proto-kesslerian region.

@ -5,8 +5,12 @@
With the laws of motion introduced in sections \cref{SEC:Laws}, we can now describe With the laws of motion introduced in sections \cref{SEC:Laws}, we can now describe
the optimization problem facing each constellation operator. the optimization problem facing each constellation operator.
Each operator recieve utility in each period per Each operator recieve benefits\footnote{
their per period utility $u^i(\vec s_t,D_t)$, which depends These benefits may take many forms, including profits for firms
and utility for militaries.
}
from their constellation
according to $u^i(\vec s_t,D_t)$, which depends
on the current sizes of constellations and the level of debris. on the current sizes of constellations and the level of debris.
In addition, the operator pays for the launch of $x^i_t$ satellites In addition, the operator pays for the launch of $x^i_t$ satellites
according to the cost function $F(x)$. according to the cost function $F(x)$.
@ -27,7 +31,7 @@ Thus the $M$-period (possibly infinite), problem is:
% - Identical debris production from destruction. % - Identical debris production from destruction.
% %
\subsection{Infinite Period (Bellman) Equation} %\subsection{Infinite Period (Bellman) Equation} % Not sure how much help a new header is.
The inifinite period version of the problem above can be rewritten in the bellman form as The inifinite period version of the problem above can be rewritten in the bellman form as
\begin{align} \begin{align}
V^i(\vec s_t, \vec x^{\sim i}_t, D_t) = \max_{x^i_t} u^i(\vec s_t, D_t) -F(x) V^i(\vec s_t, \vec x^{\sim i}_t, D_t) = \max_{x^i_t} u^i(\vec s_t, D_t) -F(x)

@ -2,7 +2,7 @@
\graphicspath{{\subfix{Assets/img/}}} \graphicspath{{\subfix{Assets/img/}}}
\begin{document} \begin{document}
\subsection{Defining the Proto-Kessler Region} \subsubsection{Defining the Proto-Kessler Region}
With the definitions of kessler syndrome and the law of debris given above, we can now With the definitions of kessler syndrome and the law of debris given above, we can now
explicitly describe the proto-kessler region. explicitly describe the proto-kessler region.
\begin{align} \begin{align}

@ -0,0 +1,26 @@
\documentclass[../Main.tex]{subfiles}
\graphicspath{{\subfix{Assets/img/}}}
\begin{document}
So far, I have not been able to actually analyze any models,
but the following are cases of interest.
\begin{itemize}
\item Reproduce Rao-Rondina single satellite model.
\item Reproduce Adilov, perfect competition, cornot-like market.
\item Add military operators to Adilov's model.
This will involve some sort of competitive complementarity
with diminishing marginal returns.
\item Competitive market where the number of satellites improves quality, i.e. allows
for pricing differences (Orbital Internet, e.g. Starlink).
\item Interacting orbital shells, using a vector representation of heterogeneous risk
imposed by constellations and debris.
\end{itemize}
Among these, policies that would be interesting to analyse include:
\begin{itemize}
\item Launch and Operation Taxes
\item Deorbit contingent bonds.
\end{itemize}
\end{document}
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