Inertial positioning method for real estate field measurement

The invention discloses an inertial positioning method for real estate field measurement. The method comprises: by acquiring and storing the static measurement process data of a point with a known position and a to-be-measured point, performing twice initial alignment , further performing two-way time strapdown calculation of ongoing dynamic measurement process data, carrying out position fusion on the basis of inverse strapdown calculation of the position information, and obtaining the coordinate of the to-be-measured point; for the to-be-measured point which cannot be vertically aligned with the measurement center of an inertial positioning device, transmitting the measuring basis located at the cabinet center to the cabinet edge so as to finish the measurement. By means of the invention, the positioning error of the to-be-measured point which is caused by the inertial positioning device is well modified, the measurement precision is improved, and it is possible to measure the to-be-measured point which cannot be vertically aligned with the measurement center of the inertial positioning device.