Comments (5)
(num1) = pitch / bank / heading / onground value
a decimal sent as string whose value is the following unsigned 32bits binary number:
3 2 1 0
10987654321098765432109876543210
< pitch >< bank ><heading >OU
- U bit:
- unused
- O bit:
- Aircraft onground indicator.
- heading 10bits field:
- aircraft current heading, in degree
- values range [0, 1023] (unsigned 10 bits number)
- 1 = 360/1024 degree
- 0 = magnetic north
- bank 10bits field:
- aircraft current bank / roll angle, in degree
- values range [-511, 512] (signed 10 bits number),
- 1 = 180/512 degree,
- negative value = right wing banking.
- pitch 10bits field:
- aircraft current pitch angle, in degree
- values range [-511, 512] (signed 10 bits number)
- 1 = 90/256 degree
- 0 = aircraft is at level
- 256 = aircraft pitch is 90 degree up (aka skyrocket!)
- negative value = down pitch
Onground aircrafts have usually 0 degree pitch and bank angles, their (num1) value is mostly heading encoded, a small value, very stable until they start taxiing.
On the contrary, airborne aircrafts have rarely perfect 0 degree pitch and banking angles, leading to big (num1) values.
from fsd-doc.
(num2) = difference between Above Ground Level altitude (AGL) and Above Mean Sea Level (AMSL) altitude, as reported by aircraft barometric altimeter
Unit is feet, obviously.
from fsd-doc.
(num1) = pitch / bank / heading / onground value
a decimal sent as string whose value is the following unsigned 32bits binary number:3 2 1 0 10987654321098765432109876543210 < pitch >< bank ><heading >OU
U bit:
- unused
O bit:
- Aircraft onground indicator.
heading 10bits field:
- aircraft current heading, in degree
- values range [0, 1023] (unsigned 10 bits number)
- 1 = 360/1024 degree
- 0 = magnetic north
bank 10bits field:
- aircraft current bank / roll angle, in degree
- values range [-511, 512] (signed 10 bits number),
- 1 = 180/512 degree,
- negative value = right wing banking.
pitch 10bits field:
- aircraft current pitch angle, in degree
- values range [-511, 512] (signed 10 bits number)
- 1 = 90/256 degree
- 0 = aircraft is at level
- 256 = aircraft pitch is 90 degree up (aka skyrocket!)
- negative value = down pitch
Onground aircrafts have usually 0 degree pitch and bank angles, their (num1) value is mostly heading encoded, a small value, very stable until they start taxiing.
On the contrary, airborne aircrafts have rarely perfect 0 degree pitch and banking angles, leading to big (num1) values.
I do thank you and must be grateful for it. This problem has been troublesome for me for totally 5 years.
from fsd-doc.
(num1) = pitch / bank / heading / onground value
a decimal sent as string whose value is the following unsigned 32bits binary number:3 2 1 0 10987654321098765432109876543210 < pitch >< bank ><heading >OU
U bit:
- unused
O bit:
- Aircraft onground indicator.
heading 10bits field:
- aircraft current heading, in degree
- values range [0, 1023] (unsigned 10 bits number)
- 1 = 360/1024 degree
- 0 = magnetic north
bank 10bits field:
- aircraft current bank / roll angle, in degree
- values range [-511, 512] (signed 10 bits number),
- 1 = 180/512 degree,
- negative value = right wing banking.
pitch 10bits field:
- aircraft current pitch angle, in degree
- values range [-511, 512] (signed 10 bits number)
- 1 = 90/256 degree
- 0 = aircraft is at level
- 256 = aircraft pitch is 90 degree up (aka skyrocket!)
- negative value = down pitch
Onground aircrafts have usually 0 degree pitch and bank angles, their (num1) value is mostly heading encoded, a small value, very stable until they start taxiing.
On the contrary, airborne aircrafts have rarely perfect 0 degree pitch and banking angles, leading to big (num1) values.I do thank you and must be grateful for it. This problem has been troublesome for me for totally 5 years.
Hello,
I've been trying to decode the Indicated Heading from the 10 bits number but have been unable to do so, how did you manage to extract the Aircraft heading? For example this is the number for 0 pitch 0 bank and a heading of 080, "12575602" How do I extract the information I need from it?
Thanks.
from fsd-doc.
Use the bit operate to get the specific bit in the pbh value. That means the pbh value should be discussed at the binary level.
Here is the demo code in JavaScript. The other value can be read in the same way.
var heading = Math.round(((parseInt(pbh) & 4092) >> 2) / 1024 * 360);
from fsd-doc.
Related Issues (8)
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from fsd-doc.