某火箭在空中沿直线做匀加速飞行，加速度为　，发动机推力的波动一定会引起加速度波动，雷达以间隔时间不断测量该火箭距离远点的距离　，由于雷达的测量噪声使得火箭距离测量值　 中含有噪声。现在欲通过雷达对火箭距离的测量数据求得火箭的真实距离、速度和加速度。(A linear constant acceleration rocket flight in the air along the acceleration, the engine thrust fluctuation will cause the fluctuation of acceleration time interval measurement, radar to constantly the rocket from the far point of the distance, because the noise radar makes the rocket range measurements with noise. Now, the real distance, velocity and acceleration of the rocket are obtained by measuring the distance of the rocket by radar.)