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 Welcome to SOFiA
 Who is behind SOFiA
 Feature overview
 System overview
 Function reference
 readVSAdata
 mergeArrayData
 F/D/T
 gauss
 lebedev
 S/W/G
 S/T/C
 W/G/C
 S/F/E
 M/F
 R/F/I
 P/D/C
 I/T/C
 makeMTX
 makeIR
 visual3D
 Coordinate System
 Application Examples
 Example 1
 Example 2
 Example 3
 Example 4
 Example 5
 Example 6
 Example 7
 Example 8
 Array Datasets
 VariSphear system
 Groups and Mailinglists
 Contact and Support
 How to Reference

SOFiA Coordinate System
SOFiA is based on a spherical coordinate system as follows:
AZ denotes the azimutal angle in a range of (02pi(. Whereas AZ=0 is defined to be the front direction and AZ=pi to be the rear direction.
EL denotes the elevation angle in a range of (0pi). EL=0 points upwards, EL=pi/2 points to the horizontal plane and EL=pi points downwards.
All angles are in RAD.
r is the radius in meters (if needed/specified).
EXAMPLE
14Point Lebedev Grid
AZ 
EL 
0.0000 
0.0000 
0.0000 
1.5708 
0.0000 
3.1416 
0.7854 
2.1863 
0.7854 
0.9553 
1.5708 
1.5708 
2.3562 
2.1863 
2.3562 
0.9553 
3.1416 
1.5708 
3.9270 
2.1863 
3.9270 
0.9553 
4.7124 
1.5708 
5.4978 
2.1863 
5.4978 
0.9553 
