Method and device for improving the inertial navigation of a projectile

摘要

A method for the inertial navigation of a projectile equipped with a mediocre-quality inertial init that is fired from a carrier equipped with a precision inertial unit includes, before firing the projectile, the biases of the accelerometers and of the gyrometers of the inertial unit of the projectile are determined using the inertial unit of the carrier. During the inertial navigation of the projectile, the measurements of the accelermeters and of the gyrometers output by the inertial unit of the projectile are corrected by the biases determined before launching.

主权项

1. A method for improving the inertial navigation of a projectile equipped with a mediocre-quality inertial unit and fired from a carrier equipped with a precision inertial unit, comprising the following steps:
before firing the projectile from the carrier, determining mean biases of accelerometers and of gyrometers of the inertial unit of the projectile from the inertial unit of the carrier; firing the projectile from the carrier; inertially navigating the projectile while in flight with the inertial unit of the projectile, and during the inertial navigation of the projectile, correcting accelerometric and gyrometric measurements provided by the inertial unit of the projectile with the mean biases determined before firing.