In order to get geodetic coordinate and guide an aircraft to capture target,a measuring orientation method is proposed to obtain the location coordinates of aircraft and known target by GPS technology.Then,a homogeneous coordinate transformation method is used to transform coordinate in orientation guide process to obtain the target data of orientation guide process.The measuring orientation technology based on airbone GPS is validated by the experiment,the result shows that the position accuracy is 30 m,and the guide accuracy is 2°.In order to obtain the accuracy range of error,the experiment error is analyzed by Monte Carlo,and the experimental result is within the expected range of error.The experiment shows that measuring orientation technology based on airbone GPS has a certain promotional and practical values.