Title :
Comments on "The Psi-Angle Error Equation in Straplown Inertial Navigation Systems"
Abstract :
The negative sign on the psi-angle differential equation for strapdow inertial navigation error analysis discussed by Weinreb and Bar-ltzhack is not due to differences in error propagation between gimbaled and strapdown systems, but to the definition of strapdown gyro drift rate given by them. If a consistent definition of gyro drift rate for gimbaled and strapdown systems error analysis is used, the sign change does not occur.
Keywords :
Aerospace testing; Differential equations; Electrons; Error analysis; Feedback; Gyroscopes; Inertial navigation; Servomechanisms; Torque; Vehicle dynamics;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
DOI :
10.1109/TAES.1979.308811
