NON-ALIGNMENT ERROR COMPENSATING METHOD WHICH COMPENSATES A NON-ALIGNMENT ERROR BY RECEIVING A SUPER HIGH FREQUENCY SIGNAL EMITED FROM THE CENTER OF AN ANTENNA SYSTEM

摘要

PURPOSE: A non-alignment error compensating method is provided to effectively compensate a non-alignment error using coordinate data of few numbers.;CONSTITUTION: Test target radar is mounted on a 3-axis gimbal platform and an antenna of the test target radar radiates a super high frequency signal to the test target radar(S101,S102). The super high frequency signal which is radiated while a roll axis of the 3-axis gimbal platform is rotated is measured in the state that the location of a pitch axis of the 3-axis gimbal platform and a yaw axis is fixed to 0(S103). Coordinates of the super high frequency signal are detected through a test target radar coordinate system and data corresponding to detected coordinates is changed into a 3-axis gimbal platform coordinate system(S105). A first central coordinate value is determined as a first non-alignment error between the test target radar coordinate system and the 3-axis gimbal platform coordinate system and the determined first non-alignment error is compensated to 0(S108).;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Start; (BB) End; (S101) A radar antenna of test target is oriented to the front and fixed; (S102) Super high frequency signal is radiated in the center of an antenna system; (S103) A roll axis is rotated and the location of the super high frequency signal is measured and recorded by constant angle in the state that the location of a pitch of a 3-axis gimbal platform and a yaw axis is '0'; (S104) Entire data or a part of the entire data is selected; (S105) A test target radar coordinate is changed into a 3-axis gimbal platform coordinate and a roll direction mounting error is revised; (S106) A non-alignment error of the test target radar coordinate and the 3-axis gimbal platform coordinate is revised by calculating a central coordinate of a circle; (S107) The 3-axis gimbal platform coordinate is changed into a reference coordinate and a roll position value of each data is revised; (S108) The non-alignment error of the test target radar coordinate and the reference coordinate is revised by calculating the central coordinate of the circle; (S109) A final revised value is appled to the antenna system