OBJECT LOCATION FINDER Russian patent published in 2005 - IPC

FIELD: high precision measurement technology.

SUBSTANCE: part of soil is subject to irradiation from coherent radiation source. Reflecting diffraction grating is mounted in such a way to get spot of light from the source to be caught inside working area of grating. Interference pattern is adjusted onto photoarray at the absence of external vibration. Interference pattern processing unit calculates zero angle of incidence of source light to grating and orientations of marks of grating relatively horizon. Data are stored in unit calculating of corrected angles of position. Additional source of coherent radiation illuminates diffraction grating when being in main mode of operation. Signal is transmitted from laser range finder to interference pattern processing unit as well as to sighted object position of angle transducer unit. The unit transmits values of measured angles to sighted object corrected angles of position calculator. Unit reads the recent formed image from the array and calculates angles at which coherent radiation source beam falls at the grating. Values of angles are sent to adjusted angles calculator. The error resulted from vibration of read-out base is calculated. The error is added to angles calculated by angles of position transducer units. Adjusted angles of position are transmitted to data output device at output of calculator.

EFFECT: reduced influence of vibration onto precision of object's location.

3 cl, 4 dwg