Path: SCPro/ProSensors
% Compute horizon unit vectors
This generates unit vectors that go from r to the horizon of a
spherical planet. theta is about about the LVLH z-axis. It draws an
image of the cone. Theta starts at -y LVLH.
Type HorizonUnitVectors for a demo.
--------------------------------------------------------------------------
Form:
u = HorizonUnitVectors(r,v,a,theta)
--------------------------------------------------------------------------
------
Inputs
------
r (3,1) Spacecraft position vector (km)
v (3,1) Spacecraft velocity vector
a (1,1) Planet radius (km) (Default Earth)
theta (1,:) Angle from LVLH +x around +z
-------
Outputs
-------
uH (3,:) Horizon unit vectors
rH (3,:) Horizon vectors (km)
--------------------------------------------------------------------------
AerospaceUtils: Coord/QLVLH Common: CommonData/SwooshWatermark Common: General/CellToMat Common: General/DeBlankLT Common: General/MatToCell Common: General/Watermark Common: Graphics/NewFig Common: Graphics/Plot2D Common: Graphics/PltStyle Common: Graphics/XLabelS Common: Graphics/YLabelS Common: Graphics/ZLabelS Common: Quaternion/Mat2Q Common: Quaternion/QTForm Math: Linear/Cross Math: Linear/Mag Math: Linear/Unit
Back to the SCPro Module page