The location compute equipment of object is an effective means to acquire object's location quickly and accurately

target distance parameter is offered by laser range finder

and geodetic position of observation point is obtained by GPS

azimuth and pitch angle are offered by azimuth compass. In the process of location compute of object

local coordinate system of object is established

and according geocentric coordinate system is established in terms of earth's ellipsoidal model. Conversion matrix between object's local coordinate system and geocentric coordinate system is solved to compute geodetic coordinate parameters which object in air or on earth to geocentric coordinate system. By testing the fixed targets on earth with known coordinate value in WGS-84 coordinate system

within the range of 30 kilometre

the required location accuracy of less than 1% is achieved.