METHOD OF DETERMINING COORDINATES OF OBJECT Russian patent published in 2009 - IPC G01S5/18 

FIELD: physics; navigation.

SUBSTANCE: invention allows for determining coordinates of an object in characteristic points of a motion path or on an area. The method of determining coordinates of an object involves placing sensors for measuring disturbances in the air in measuring points with known coordinates. The sensors are placed in not less than four measuring points. The sensors detect a signal from the object, determine time instants t_i, which correspond to the signal reaching each sensor and time intervals Δt_i, which correspond to delay of signal propagation relative one of the sensors which is selected as a reference sensor. Distances R_zi, traversed by the signal from the object in predefined time intervals Δt_i, are determined taking into account data on undisturbed state of the air. Using distances R_Zi and coordinates of measuring points, the coordinates of the object are found as follows. In the search area, points S_k are given, for which distances R_Ski to each sensor are determined. R_zi and R_Ski are determined taking into account data on the undisturbed state of the air. Coordinates of a point S_k, for which the expression Σ(R_Skj-(R_k+R_zi))² assumes the least value are taken as the coordinates of the object. In the expression R_Ski - distance from the i^th sensor to a certain point S_k in the search area, i=1-N; N≥4; R_k - distance from the reference sensor to point S_k; R_zi - distance traversed by the signal from the object beyond the time interval Δt_i.

EFFECT: increased accuracy of determining coordinates of an object.

5 dwg