基于短波信号的远程火箭弹转速探测方法

Research on Detection of the Rotating Speed of a Long Range Rocket Projectile Based on Shortwave signals

提出一种利用短波信号进行远程火箭弹转速测量的方法,利用弹丸在旋转、飞行过程中,由于接收点所处位置的不同,接收的短波信号幅值会呈规律性变化,通过提取变化周期即可测得弹丸转速.具体分析了该系统方法的原理,描述了弹上短波接收系统的组成.在地面设置近垂直入射天波传播"NVIS"天线,消除短波通信静区,弹上安装铁氧体加载螺旋线圈天线接收短波信号,利用原有弹载计算机进行数据处理.并对弹上短波天线接收的信号进行仿真.采用该方法可以解决在转速测量中误差累计的问题.

The paper presents a method for measuring the rotating speed of a long range rocket projectile by using short wave signals. During a rocket projectile flying and rotating, the amplitude of the received short wave signal changes regularly with the difference of the received place. The rotating speed of the rocket projectile can be obtained by extracting the variational periods. The paper analyzes the working principle of the method and describes the construction of the short wave receiving system on the rocket projectile. The ＂NVIS＂（Near-Vertical Incidence Sky wave） antenna is set on the horizon, which can clear up the dead zone of short-wave communication, and a ferrite loading spiral coil antenna is installed on the rocker projectile to receive the short wave signal. A missile-borne computer is used to process the data and simulates the received short wave signals. This method can solve the problem of deviation accumulation for the measurement of rotating speed.