FIELD: medicine.SUBSTANCE: group of inventions relates to medicine and medical equipment, namely to systems and methods for determining position of medical instrument in space. System contains transmitting unit, which emits electromagnetic radiation, at least, one located on medical instrument element of localisation, which receives electromagnetic radiation from transmitting unit and generates localisation signal. System also contains assessment unit, which determines position of medical instrument by assessment of localisation signal. Localisation element has transceiver, which contains antenna and circuit, connected to antenna for reception and transmission of electromagnetic radiation. Circuit is excited by means of received via antenna electromagnetic radiation from transmission unit in such a way that it emits localisation signal via antenna as electromagnetic radiation. At least one receiving unit is connected to assessment unit. Assessment unit is made with possibility of determining medical instrument position on the basis of phase ratio of electromagnetic radiation of localisation signal in respective point of receiving unit. System given above is used to implement stages of method for determination of position of medical instrument in space. As alternative version of system implementation RFID tag is integrated into medical instrument. Position of instrument is determined on the basis of phase ratio of electromagnetic radiation of localisation signal in the place of location of, at least, one receiving unit, connected to assessment unit.EFFECT: application of group of inventions will make it possible to increase accuracy of determination of instrument position.33 cl, 2 dwgГруппа изобретений относится к медицине и медицинской технике, а именно к системам и способам для определения пространственного положения медицинского инструмента. Система содержит излучающий электромагнитное излучение передающий блок, по меньшей мере, один расположенный на медицинском и
