舰炮距离方位法对运动目标计算精度分析

Accuracy Analysis of Naval Gun Relative Distance and Direction Method for Moving Targets Calculation

分析了距离方位法对运动目标射击的计算原理和射击诸元计算模型,通过仿真方法分析了参数误差对诸元计算的影响,并建立了参数误差影响射击诸元的计算模型。仿真结果表明:距离方位法计算参数中航迹向、对地航速和初始相对方位对诸元精度的影响较大,而初始相对距离的影响较小。其中航迹向和对地航速测量误差均值增大一倍,诸元误差达到相同大小所需的时间缩短一半;初始相对距离测量误差均值越大,诸元误差随推算时间而增加的幅度越大;初始相对方位测量误差与诸元误差呈正比关系。

The influence of parameter errors on the calculation of various elements was analyzed by simulation.And the calculation model of parameter errors affecting firing elements was established.Simulation results show that the track direction,ground velocity and the initial relative direction have a greater influence on the element accuracy among the parameters required for the calculation of the moving target by the relative distance and direction method,while the initial relative distance have a smaller influence.The mean value of the measurement errors of the track direction and ground velocity was doubled,the time for element error to reach the same size was reduced by half;the larger the mean value of the initial relative distance measurement error,the greater the increase in the element calculation error with the estimation time;and the mean value of the initial relative direction measurement error is proportional to the calculation errors of the element.