A New Design Method of Allocation Scheme in GFSINS

The research of allocation scheme is infertile in gyroscope free strap-down inertial navigation system(GFSINS) at present.There is no systematic design theory.The equation of angular-rate calculating error with measuring error of acceleration is deduced based on the output equation of an accelerometer,including the allocation scheme parameters.Minimizing the angular-rate calculating error as purpose,the optimal scheme with 6 accelerometers is presented by using chaotic particle swarm optimization algorithm and the flight data of some missile.For it is difficult to be installed precisely,an sub-optimal scheme is developed through restricting the parameters.The simulation result shows that its calculating error of angular-rate is close to that of the optimal scheme and much better than the typical Cub-type scheme.