Method for determining the direction of arrival of HF ionospheric signal paths on a network of N sensors, associated computer program and device

Abstract

The invention relates to a method for determining the direction of arrival of the paths of high-frequency ionospheric signals on a network (2) of N sensors (3), comprising: estimation, by sparse goniometry, of the vector verifying where σ2 is the noise level and R x is the vectorized covariance matrix of the signal x(t) considered at the output of the sensor network, the vector of dimension Nx1 is the known response of the sensor network to a signal received with the direction of arrival , deduction, as a function of the index qm of each non-zero component of said estimate, of the path bearing from a respective transmitter m; for each deduced bearing, given that , the non-zero components of type are then determined: the elevation of index qp associated with each of these non-zero components , is selected as equal to an elevation of a path of the mth transmitter. Figure for the abstract: Fig. 1