Title :
An approach for accurate GPS navigation with SA
Author_Institution :
Res. & Training Unit for Navigational Electron., Osmania Univ., Hyderabad
fDate :
4/1/1998 12:00:00 AM
Abstract :
An approach is presented for more accurate GPS navigation with selective availability. In this approach, a linearized perturbation model has been obtained. Using the measurement perturbation difference approach, the model is made suitable to formulate the Kalman filter to obtain the estimate of state perturbation and thereby the estimate of the user position and velocity. Simulation results are provided to confirm the efficacy of the approach
Keywords :
Global Positioning System; Kalman filters; perturbation techniques; GPS navigation; Kalman filter; SA; linearized perturbation model; perturbation difference approach; selective availability; state perturbation; user position; Clocks; Filters; Geodesy; Global Positioning System; Measurement errors; Position measurement; Satellite navigation systems; State estimation; Velocity measurement; White noise;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
