Launcher's flutter in fire control while using target parameters provided by command and control system of ship to ship missile without special attack radar is analyzed A densified mathematical model with low data rate target parameters is given, and the result in the sea test is good. 分析了舰-舰导弹系统去掉专用攻击雷达后,利用指挥控制系统提供的目标参数进行火力控制时发射架的抖动问题。提出了一种实用的低数据率目标参数加密数学模型。