METHOD OF DETERMINING COORDINATES OF MOBILE OBJECT IN CLOSED ROOMS AND SYSTEM FOR REALISING SAID METHOD Russian patent published in 2012 - IPC H04W40/20 G01S5/14 

FIELD: information technology.

SUBSTANCE: system for determining coordinates of a mobile object in closed rooms has radiofrequency identifiers 1.i (i=1, 2, …, n), a reader 2, a transmitting wireless modem 3, a receiving wireless modem 5, a computer 4, wherein the reader 2 has a master generator 6, a circulator 7, a high frequency amplifier 9 and a phase detector 10; the transmitting wireless modem has a delay line 11, a pseudorandom sequence generator 12, an adder 13, a regenerative divider 14, a phase-shift modulator 16, a power amplifier 17; the receiving modem 5 has a high frequency amplifier 24, a phase doubler 25, first 26 and second 28 narrow-band filters, a phase halver 27 and a phase detector 29.

EFFECT: high accuracy and reliability of determining coordinates of mobile objects in closed rooms through complete frequency isolation between radiofrequency identifiers and wireless modems.

2 cl, 5 dwg