A method of measuring the bearing angle of arrival θ of HF band radio signals received by a crossed loop antenna or an Adcock antenna array, including at least the following steps: • in a preparatory calibration phase, acquiring and recording the measurements made by the antenna of a calibration signal which varies in its bearing and has a fixed or variable frequency; • in a phase of measuring detected signals: o acquiring the detected signals in at least one frequency channel; o for each frequency channel f i, correlating the acquired signals with the recorded signals resulting from the frequency calibration close to f i, and determining the direction of arrival of the signals by finding the bearing angle θ for which the maximum correlation is obtained. in which each acquisition in the calibration phase is recorded in a table in the form of an intercorrelation vector, the vectors in this table being subsequently correlated with another intercorrelation vector obtained from the signals acquired in the measurement phase, each of the intercorrelation vectors being calculated by executing at least the following steps: o acquiring, at least on the sine loop and the cosine loop of the antenna, N signal measurements, where N ≥ 1, over a time interval Δt; o for p measurements out of the N measurements made previously, calculating an elementary intercorrelation vector X k; o calculating a mean intercorrelation vector X by finding the mean of the p elementary intercorrelation vectors X k calculated previously. the method being characterized in that an elementary intercorrelation vector X k based on a measurement k is defined thus: X k = 1 ‖ X 0, k ‖ 2. X 0, k. X 0, k H X 0, k. X c, k H X 0, k. X s, k H, where X 0,k is the complex measurement acquired on the monopole, X c,k is the complex measurement acquired on the cosine frame, X s,k is the complex measurement acquired on the sine frame, and H is the Hermitian operator. • in a preparatory calibration phase, acquiring and recording the measurements made by the antenna of a calibration signal which varies in its bearing and has a fixed or variable frequency; • in a phase of measuring detected signals: o acquiring the detected signals in at least one frequency channel; o for each frequency channel f i, correlating the acquired signals with the recorded signals resulting from the frequency calibration close to f i, and determining the direction of arrival of the signals by finding the bearing angle θ for which the maximum correlation is obtained. in which each acquisition in the calibration phase is recorded in a table in the form of an intercorrelation vector, the vectors in this table being subsequently correlated with another intercorrelation vector obtained from the signals acquired in the measurement phase, each of the intercorrelation vectors being calculated by executing at least the following steps: o acquiring, at least on the sine loop and the cosine loop of the antenna, N signal measurements, where N ≥ 1, over a time interval Δt; o for p measurements out of the N measurements made previously, calculating an elementary intercorrelation vector X k; o calculating a mean intercorrelation vector X by finding the mean of the p elementary intercorrelation vectors X k calculated previously. o acquiring the detected signals in at least one frequency channel; o for each frequency channel f i, correlating the acquired signals with the recorded signals resulting from the frequency calibration close to f i, and determining the direction of arrival of the signals by finding the bearing angle θ for which the maximum correlation is obtained. o acquiring, at least on the sine loop and the cosine loop of the antenna, N signal measurements, where N ≥ 1, over a time interval Δt; o for p measurements out of the N measurements made previously, calculating an elementary intercorrelation vector X k; o calculating a mean intercorrelation vector X by finding the mean of the p elementary intercorrelation vectors X k calculated previously.