19
edits
Inertial Navigation System: Difference between revisions
Jump to navigation
Jump to search
no edit summary
No edit summary |
No edit summary |
||
| Line 26: | Line 26: | ||
Strapdown systems have fewer moving parts, so they are more reliable and simpler than other systems. However, they do need more accurate gyroscopes and better computers, so they are a more recent development. | Strapdown systems have fewer moving parts, so they are more reliable and simpler than other systems. However, they do need more accurate gyroscopes and better computers, so they are a more recent development. | ||
==FlightGear's implementation== | |||
There is a simulation of an INS being developed for FlightGear. It is discussed in the following thread: [http://flightgear.org/forums/viewtopic.php?f=6&t=3396], titled "INS Systems (from Unlimited Wishlist.)" | |||
The implementation is still in development. | |||
===Done=== | |||
<ul> | |||
<li>Basic class layout and code is working | |||
<li>First XML support (will be replaced with PropertyList format) | |||
<li>Lat/lon integration, very basic work | |||
<li>Most properties for input/output supported | |||
</ul> | |||
===Todo=== | |||
<ol> | |||
<li>Convert to the PropertyList XML format | |||
<li>Fake alignment (using a timer) | |||
<li>Multiple unit mixing | |||
<li>Other small tweaks | |||
<li>'''Ready to use in an aircraft''' | |||
<li>Convert integration over to quaternions, add orientation integration. | |||
<li>Fake a drift model (a better fake than the alignment... | |||
<li>Add a faked radio updating system | |||
<li>More realistic alignment simulation (gimballed/strapdown differences, etc...) | |||
</ol> | |||
==References== | ==References== | ||
(Sources linked to above) | |||
<ol> | |||
<li>A good reference on aircraft navigation | |||
<li>Detailed overview of INS systems | |||
<li>Information on the IMU on Apollo 11 and gimbal lock | |||
<li>Thread on the forum | |||
</ol> | |||
Additional: | |||
<ul> | |||
<li>[http://en.wikipedia.org/wiki/Inertial_navigation_system] Wikipedia article on inertial navigation systems | |||
<li>[http://everything2.com/title/Inertial%2520navigation%2520system] everything2.com has some more information | |||
<li>[http://www.imar-navigation.de/download/inertial_navigation_introduction.pdf] Another source of good INS information and the sources of drift. | |||
<li>[http://www.f20a.com/f20ins.htm] Some information about the F20's INS | |||
<li>[http://virtualskies.arc.nasa.gov/navigation/tutorial/tutorial4.html] Some information about INS, GPS, and a system for taxiing awareness using GPS (probably INS/GPS, actually.) | |||
</ul> | |||
'''''Page under construction''''' | '''''Page under construction''''' | ||