docs/Simulator_Overview add content, images, custom css

docs/.vitepress/config.mts

@@ -1,4 +1,5 @@
 import { defineConfig } from 'vitepress'
+import DefaultTheme from './theme'
 
 // https://vitepress.dev/reference/site-config
 export default defineConfig({
@@ -16,7 +17,7 @@ export default defineConfig({
       { text: 'Development Guide', link: '/Development_Guide' }
     ],
 
-    sidebar: [
+    sidebar: [ 
       {
         text: 'Documentation',
         items: [

docs/.vitepress/theme/custom.css

@@ -0,0 +1,6 @@
+img {
+    display: block;
+    float: none;
+    margin-left: auto;
+    margin-right: auto;
+}

docs/.vitepress/theme/index.js

@@ -0,0 +1,5 @@
+// .vitepress/theme/index.js
+import DefaultTheme from 'vitepress/theme'
+import './custom.css'
+
+export default DefaultTheme

docs/Simulator_Overview.md

@@ -86,3 +86,39 @@ Augmented proportional navigation adds a feedthrough term proportional to the ag
 $$ \vec{a}_n = K \left( \dot{\lambda} v + \frac{1}{2} \vec{a}_T \right) $$
 where $\vec{a}_T$ is the target’s acceleration.  
 APN is equivalent to true PN if the target is not accelerating.
+
+
+### Interceptor Assignment
+
+**Threat-based assignment**
+
+![Threat-based assignment](./images/threat_based_assignment.png){width=40%}
+
+When submunitions are dispensed (e.g., Micromissiles from Hydra-70s), they are assigned a threat to intercept.
+
+Assignment by calculated threat value is done by:
+1. Sorting (descending) by # of assigned interceptors
+2. Sorting (ascending) by threat value
+
+The threat value is:
+$$
+V_{threat} = \frac{1}{d_{t\rightarrow p}} * \|v_t\|
+$$
+
+Where:
+- $\|v_t\|$ - Threat's velocity
+- $d_{t\rightarrow p}$ - Distance from threat to defense point
+
+### Intercept evasion tactics
+
+![Intercept evasion tactics](./images/intercept_evasion.png){width=60%}
+
+When interceptors get too close to their intended target, the threat performs an evasive maneuver to waste the interceptor's velocity and remaining energy:
+
+1. The threat accelerates to its maximum speed
+2. The threat turns at the maximum normal acceleration, so that its velocity is normal to the interceptor's velocity
+3. The interceptor must turn too and thus sacrifice speed
+
+If the threat is too close to the Y=0 floor, it will perform a linear combination of:
+1. Turning to evade the interceptor
+2. Turning parallel to the surface