Abstract: A method for generating and checking a spatio-temporal field distribution having predefined characteristics such as one or more directions of propagation, a high level of field intensity and a polarization in a reverberant chamber. To do this, two separate networks of transducers are provided so as to estimate a transfer function between these two networks and to determine excitation signals using the principle of temporal return. The excitation signals are used to generate the spatio-temporal field according to the predefined characteristics.

Abstract: A method is provided for generation of statistically uniform field distribution inside a test volume of a reverberation chamber. The method includes: generating complex independent and identically distributed random signals x, filtering signals x through a passage matrix P according to a linear transformation in order to determine correlated excitation signals “a” by “a”=Px, P being a passage matrix determined from H a complex transfer function H between the test volume and the antennas; and P is constructed such that E=HPx where E is independent and identically distributed, and generating the field E by applying simultaneously correlated excitation signals “a” to several antennas of the reverberation chamber.

Abstract: A method for generating and checking a spatio-temporal field distribution having predefined characteristics such as one or more directions of propagation, a high level of field intensity and a polarization in a reverberant chamber. To do this, two separate networks of transducers are provided so as to estimate a transfer function between these two networks and to determine excitation signals using the principle of temporal return. The excitation signals are used to generate the spatio-temporal field according to the predefined characteristics.

Abstract: A method is provided for determining the attitude, position, and velocity of a mobile device from knowledge of the direction of the earth's magnetic field in an absolute reference frame. Signals are supplied to a processing means for the signals by gyroscopic measuring means in three axes, accelerometric measuring means in three axes, and magnetic measuring means in three axes, where the measuring means are located on-board the device and according to three three-dimensional reference frames connected to the device reference frame.

Abstract: The invention relates to the field of inertial navigation systems and in particular to a method for determining the attitude, position, and velocity of a mobile device from knowledge of the direction of the earth's magnetic field in an absolute reference frame and signals supplied to processing means (4) of these signals by gyroscopic measuring means (1) in three axes, accelerometric measuring means (2) in three axes, and magnetic measuring means (3) in three axes, said measuring means being located on-board the device and according to three three-dimensional reference frames connected to the device reference frame OdXdYdZd, and characterized by comprising: a first step in which the attitude of the device is calculated at time K?1 from: signals coming from the gyroscopic measuring means (1) at time k signals coming from the accelerometric measuring means (2) at time k+1 the position and velocity of the device in the absolute reference frame at time k signals supplied by the magnetic measuring means (3) re