Path: FormationFlying/Collision
% Predict collisions given a new state measurement.
Runs the collision monitoring algorithm. Propagates forward for a fixed time
assuming no maneuvers. Calls CollisionMonAlg. Has a built-in set of default
parameters.
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Form:
[prob, dMin, xhat, Shat, t] = PredictCollision( d, jD, y )
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Inputs
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d : Algorithm data structure
.hRef Altitude of the reference orbit (km)
.eRef Eccentricity
.MRef Mean anomaly
.dR Reference length of Hill's orbit (km)
.initBounds Error in measurement (6,1)
.scalev Sigma for measurement noise
.mSC Spacecraft mass (kg)
.lenSC Spacecraft length (m)
.diaSC Spacecraft diameter (m)
.Cd Drag coefficient
.Cr Reflectivity of s/c: 0.0 for translucent;
1.0 for black-body; 2.0 for flat mirror
jD (1) Epoch in Julian date
y (6,n) Spacecraft relative state in Hill's frame (km, km/s)
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Outputs
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prob {n}(1,:) probability of collision
d {n}(1,:) minimum distance between spacecraft position ellipsoids
xhat {n}(6,:) xhat, ellipsoid centers
Shat {n}(6,6,:) Shat, ellipsoid size matrices
t
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Reference: Mark Campbell, "Collision Monitoring Within Satellite
Clusters". IEEE Transactions on Control Systems Technology, Jan. 2005
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