Method for determining at least one location for reception, by at least one receiving device (D_RX), of an ambient signal emitted in a frequency band, called the "emission band", and intended to be backscattered by at least one transmitting device (D_TX) to the receiving device (D_RX), said transmitting device (D_TX) being associated with: - operating states, including at least one state called the "backscattering" state and a contrary state called the "non-backscattering" state, - a frequency band, called the "working band", included in said emission band, said receiving device (D_RX) being associated with a zone (Z_T) having at least one dimension larger than half the wavelength corresponding to the central frequency of said emission band, said method being implemented by the receiving device (D_RX) when the transmitting device (D_TX) is in the non-backscattering state and comprising: - a step (E10) of moving the receiving device (D_RX) through at least one portion of said zone (Z_T), - during the movement of the receiving device (D_RX), a step (E20) of acquiring, in at least one location (E_i) in said portion, measurements (Pj_i) of the electromagnetic power received by said receiving device (D_RX), said measurements being acquired in respective sub-bands (SB_i) of said working band, - a step (E30) of comparing the measurements associated with said at least one location (E_i) with a determined threshold (S_D), said at least one location being determined (E40) to be a reception location if at least one of said measurements (Pj_i) is lower than said threshold. - operating states, including at least one state called the "backscattering" state and a contrary state called the "non-backscattering" state, - a frequency band, called the "working band", included in said emission band, said receiving device (D_RX) being associated with a zone (Z_T) having at least one dimension larger than half the wavelength corresponding to the central frequency of said emission band, said method being implemented by the receiving device (D_RX) when the transmitting device (D_TX) is in the non-backscattering state and comprising: - a step (E10) of moving the receiving device (D_RX) through at least one portion of said zone (Z_T), - during the movement of the receiving device (D_RX), a step (E20) of acquiring, in at least one location (E_i) in said portion, measurements (Pj_i) of the electromagnetic power received by said receiving device (D_RX), said measurements being acquired in respective sub-bands (SB_i) of said working band, - a step (E30) of comparing the measurements associated with said at least one location (E_i) with a determined threshold (S_D), said at least one location being determined (E40) to be a reception location if at least one of said measurements (Pj_i) is lower than said threshold. - a step (E10) of moving the receiving device (D_RX) through at least one portion of said zone (Z_T), - during the movement of the receiving device (D_RX), a step (E20) of acquiring, in at least one location (E_i) in said portion, measurements (Pj_i) of the electromagnetic power received by said receiving device (D_RX), said measurements being acquired in respective sub-bands (SB_i) of said working band, - a step (E30) of comparing the measurements associated with said at least one location (E_i) with a determined threshold (S_D), said at least one location being determined (E40) to be a reception location if at least one of said measurements (Pj_i) is lower than said threshold. <EOS>