Research on dynamic stability precision test of artillery based on dual-target and CCD

This paper presents a new approach of artillery dynamic stability precision and the test device based on dual-target in order to effectively eliminate the translation of the artillery pipe. The CCD camera installed on the rear of the two targets is used as a measuring element to achieve the non-contact measurement of the artillery rotational angle. The center position of the facula formed in two targets by the laser fixed on the artillery pipe is measured with a vision model. Based on the Euler estimator, an algorithm to find and predict the center of the facula is proposed. And a new image calibrated method that transforms the image coordinates into the real is introduced. Through the subtraction of the coordinates of two faculas in the target the translation of the artillery pipe is eliminated, and the actual stability precision is obtained. Experimental results show that the proposed algorithm and the test system work well with robustness.