基于鱼雷电磁场辐射源的过靶弹道最小二乘拟合方法

针对现有鱼雷过靶弹道测量技术受海况影响大和建设维护难的问题,利用鱼雷电磁场辐射源作为定位信号,提出了一种基于最小二乘拟合法的鱼雷定位测量方法。该方法通过在靶船两舷布设磁传感器阵列测量鱼雷辐射电磁场以推算鱼雷位置,分别模拟鱼雷纵穿过靶、横穿过靶、斜穿过靶3种态势,利用最小二乘法按时序将坐标点拟合形成鱼雷近场航行轨迹(即过靶弹道)。采用该方法进行了陆上试验验证,结果表明该方法可满足鱼雷典型过靶态势下的定位精度要求,在鱼雷研发、部队训练、靶场建设等方面有实际应用价值。

A Least Square Fitting Method for Terminal Trajectory of Torpedo Based on Electromagnetic Radiation Source

The current method of measuring terminal trajectory of torpedo is affected by sea conditions,and the construction and maintenance are difficult.Aiming at the problem,a torpedo location measurement method based on least square fitting was proposed by taking the torpedo electromagnetic field emitter as positioning signal.The position of torpedo was located by placing a magnetic sensor array on the two sides of target ship.Three kinds of motion posture of torpedo penertrating through target were simulated,such as vertical penetration,traverse penetration and oblique penetration.The coordinate points were fitted to form torpedo near-field trajectory(terminal trajectory)by using least square method.The result shows that the method can meet the positioning-accuracy requirements of torpedo under typical penetrating-target condition,and it has practical application value in torpedo research,army training and shooting-range construction.