Planetary System Navigation

== Planetary System Navigation (PSN) ==
=== What is PSN? ===
Planetary System Navigation, or PSN, is the UNSC's method of navigating within a planetary or lunar system with ease and efficiency. It is designed in a way that is both understandable by the commanders of vessels and fleets to create battle plans and combat manoeuvres while also being quick and easy to put into a command console so it can be carried out in combat.
The foundation of the PSN was the Orbital Positioning Program (OPP) which was created in the mid-21st to allow easy tracking and navigation of spacefaring vessels in the Earth's, the Moon's and Mars's orbits. This was then improved upon by the military during the Interplanetary Wars in the mid to late 22nd Century. The UNSPKO developed a more effective system that laid the groundwork for the version that was installed in 2507.
=== How does it work? ===
First, you have a section (S), of which every planet has eight, which are cubes of space that divide the planet's sphere of influence. Think of each section like a three-dimensional graph, with three-axis' originating from the core.
The axis' go through six points on a planet's surface. These are where the equator (EQ) meets the north-south lines at the Prime Merdian (0°)(PM), Second Meridian (90°)(SM), Third Meridian (180°)(TM) and Forth Meridian (270°)(FM). So that makes each axis come out of both poles and out of each crossing between the Equator and each Meridian.
The axes at the poles are always considered as the y-axis, the axes coming out of the Prime or Third Merdian meeting the equator are classed as the x-axis, and the axes coming out of the Second or Forth Merdian meeting the equator are always considered as the z-axis. Along each 0-line of these axes is the point where the sections separate. In other words, if you have a negative number in your location vector, you are no longer in that section you are measuring from. Each of these sections are given designations Alpha through to Hotel. These are the current standard designations:
Alpha: Northern 0-90°
Bravo: Northern 90-180°
Charlie: Northern 180-270°
Delta: Northern 270-360°
Echo: Southern 0-90°
Foxtrot: Southern 90-180°
Golf: Southern 180-270°
Hotel: Southern 270-360°
That means that your location vector for the International Space Station if it crossed where the Prime Meridian and the Equator meet, would be as follows: A|000|408|000 as it is 408km above the Earth.
Category:UNSC
Category:CDCMIS
Category:Technology