An intersection measurement method by combination of coordinate system transformation with Row-wised Weighted Total Least Squares(RWTLS) was proposed for field tests. The angles of the target points on a geodetic coordinate system was obtained by using the space coordinate transformation method. Then,the angle relationship between the initial data was determined through condition equation established by redundant observation numbers, and the moving object's space coordinate of position at any moment was acquired by using the RWTLS and Gauss-Newton method. Finally, the base distance was get through the observations of the static target, and the targets' trajectory curve was obtained with the target space angle coordinates. The experimental results show that the errors of the coordinates of the observation station are within ±0.15 m, and the target point errors in X, Y, Z directions are within ±0.4 m. The method avoids the correction of theodolite coordinate and does not need to give the position parameters of the observation station, so it reduces calculation of starting data and the number of the observation stations and is characterized by quick convergence, high accuracy and good practicability in field tests of flying targets.