国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

Aiming at the problem of the target time test of the supersonic projectile, the acoustic sensor test mechanism is studied, the acoustic wave delay trigger model is established, and a set of target time test system is developed. A sensor array is used to acquire the time difference of the supersonic projectile shock wave reaching different sensors. A mathematical model for measuring the target moment of the supersonic projectile is established, which includes the sensor coordinates, time difference and projectile target time. For the linear microphone array, the Gauss-Newton method is used to solve the positioning model, and the iterative formula, convergence and well-posedness of Gauss-Newton method are analyzed. The influence of the error size and the number of sensors on the error are analyzed by computer simulation. The calculations by simulation test data show that the acoustic test results are consistent with the actual results. The method is applied in a certain type of anti-aircraft test mission, and the time of projecting the target is successfully tested.