Correlativity Analysis Between Changes of Hull Attitude Disturbance and Fire Data Errors

Hull attitude disturbance is the main error source of fire during marching,it has direct influence on fire accuracy of the self-propelled anti-aircraft(SPAA)gun.Calculation and analysis were carried out on dynamic flying data of a SPAA gun in development so as to search the effect of hull disturbance on fire data error.In practical calculation,the worked theodolite measuring value was regarded as target flight true value and CAN bus extraction value of the SPAA gun was regarded as measured value,the margin between the two values was obtained to calculate fire control data error,at the same time,hull attitude angles in traveling were collected in real time.The calculation and analysis were carried out on the hull attitude angle(and its change rate)and fire control data error by use of MATLAB,and the function curve between the hull attitude angle and fire control data error was acquired.The calculation results can provide reference for overall and part designs of SPAA gun system.