一种空间圆形目标俯仰角的测量方法

俯仰角在许多领域都有着重要的应用,对其进行精确的测量就成为一个亟待解决的关键问题。分析了空间圆形目标的俯仰运动,并根据旋转轴是否通过其圆心将其分为两类。基于摄像机透视投影原理,提出了一种空间圆形目标俯仰角的测量方法,分别推导出了两种情况下俯仰角的计算公式。并通过实验,验证了该方法的可行性。该方法测量方便,计算精度较高,俯仰角测量绝对误差在0.2°以内,可以满足许多应用领域圆形目标俯仰角测量的要求。

A measurement method for the pitch angle of circular object in space

Pitch angle plays important roles in many fields,as a result,the measurement of pitch angle is a key problem to be solved urgently.The pitch movement of circular object in space is analyzed and classified into two types according to whether the rotation axis passes through the circle center.A measurement method for the pitch angle of circular object in space is proposed based on the perspective projection principle of camera.The computation formulas of the pitch angle in two cases are deduced.The feasibility of the method proposed is verified by experiments.The method is easy and the computational precision is high.The absolute error of measured pitch angle is within 0.2°.It can meet actual need for the measurement of circular object′s pitch angle in many fields of application.