Maths
dA = √((xR − xA)² + (yR − yA)²)
dB = √((xR − xB)² + (yR − yB)²)
αA = atan((hR − hc) / dA)
αB = atan((hR − hc) / dB)
drift = √((xR − xL)² + (yR − yL)²)
True two-camera height:
Htrue = hR
One-camera assumes rocket remains above launch pad:
dA0 = √((xL − xA)² + (yL − yA)²)
H1cam = hc + dA0 × tan(αA)
Error = H1cam − Htrue
The two-camera model uses the intersection of the two sight lines to determine the rocket’s actual horizontal position. The one-camera model incorrectly keeps using the launch-pad distance.