Abstract: The invention relates to a system (1) for positioning at least one mobile receiver (2), comprising at least two stationary transmitter bases (4, 4A, 4B). Each transmitter base 5 (4, 4A, 4B) is configured to transmit radio frequency signals (S1A, S1B, sdA, sdB, srA, srB) and to transmit a sum (S1A, S1B) of at least two unmodulated pure carrier signals of different frequencies; and the mobile receiver (2) further comprises: means for measuring phases of the signals; and computing means configured to: apply a Fourier transform to a signal consisting of the various measured phases of the radio frequency 10 signals; determine a time-of-flight between the mobile receiver (2) and each base (4A, 4B); calculate at least one time-of-flight difference between the mobile (2) and two transmitter bases (4A, 4B); determine the position of the mobile receiver (2) from the calculated time-of-flight difference(s).

Abstract: A device for capacitive detection of an object (O), including at least one biasing module configured to bias at least one measurement electrode at an alternating electric potential (Vg), referred to as work potential, different from a ground potential (M); and measurement electronics; at least one biasing module including at least one toroidal element, referred to as excitation element, with a central opening designed to induce, in at least one electrical conductor which passes therethrough and which is in electrical connection with at least one measurement electrode, an alternating potential difference equal to the alternating electrical work potential (Vg), between an input and an output of the at least one toroidal element. An apparatus using such a capacitive detection device is also included.