Patent ID: 6809806
Filing Date: 2004-10-26
Classification: G01B,G01S

Abstract:
A method for measuring the angle of elevation of the beam axis of a front-looking radar antenna on a land vehicle and verifying the azimuth of the beam axis, the method comprising:securing to the antenna a first fixture that comprises both an indicator for indicating angle of elevation and a first optical laser that emits a first laser beam to aim the first laser beam in a direction that, as viewed normal to a horizontal surface on which the vehicle is disposed for travel, is parallel to the beam axis of the antenna and to shine the first laser beam on a target spaced frontally of the vehicle in a direction of forward vehicle travel; securing to the vehicle a second fixture that comprises a second optical laser that emits a second laser beam to aim the second laser beam in a direction that, as viewed normal to the horizontal surface, is parallel to the direction of forward vehicle travel and to shine the second laser beam on the target; and using the angle of elevation indicated by the indicator as a measure of the angle of elevation of the beam axis of the antenna and verifying the azimuth of the beam axis when the two laser beams are shining in a predetermined relationship to each other on the target.