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为实现光电经纬仪等靶场光测姿态测量设备测量精度的室内测试和评价,介绍了光电经纬仪对空间轴对称目标的姿态交会测量的原理。利用检测架、平行光管、目标轮廓靶及光源室内模拟不同姿态角的无穷远目标。建立了利用目标特征点的方位角、俯仰角计算目标姿态角的精确数学模型。用高精度经纬仪对目标上的多个特征点进行测量,用最小二乘法按该数学模型对目标姿态进行拟合,得到模拟目标的姿态,经验证该方法的标定精度可达0.05°。以该标定结果为模拟目标姿态的真值,光电经纬仪对同一模拟目标姿态进行动态测量,将测量结果与真值进行比较,可确定光电经纬仪的姿态测量精度。
In order to realize the indoor testing and evaluation of the measurement accuracy of photodetachrometers and other shooting range optical attitude measurement equipment, the principle of the attitude intersection measurement of the theodolite with space axis symmetry target is introduced. Using the test frame, collimator, target contour target and light source simulate the infinite target with different attitude angles. An accurate mathematical model for calculating the target attitude angle by using the azimuth and pitch angles of the target feature points is established. The high-accuracy theodolite is used to measure multiple target points and the least square method is used to fit the target attitude according to the mathematical model to obtain the pose of the simulated target. The calibration accuracy of this method is verified to be 0.05 °. Taking this calibration result as the true value of the simulated target attitude, the theodolite performs dynamic measurement on the same simulated target attitude, and compares the measured result with the true value to determine the attitude measurement accuracy of the photoelectric theodolite.