基于连续波雷达微多普勒效应的弹丸转速测试方法

摘要

Aiming at the limitation of testing methods for projectile rotating speed, a new testing method of projectile rotating speed is put forward. The radar echo micro-Doppler modulated mathematic model caused by projectile rotation is built by using micro-Doppler effect resulted from CW radar detection of projectile rotations, the internal relationship between micro-Doppler frequency and projectile rotating speed is derived, and testing methods of micro-Doppler data for projectile rotating speed is provided. The projectile rotating speed is extracted by micro-motion identification and digital demodulation of projectile rotation, and the good testing effect is validated by shooting range test.%针对目前弹丸转速测试方法的局限，提出了一种新的弹丸转速测试方法，利用连续波雷达探测弹丸旋转产生的微多普勒效应，建立了弹丸旋转运动引起的雷达回波微多普勒调制数学模型，推导了微多普勒频率与弹丸转速的解析关系，给出了弹丸转速微多普勒数据的实测方案，并通过弹丸旋转微动辨识与数字解调技术，提取出弹丸转速，经靶场试验验证，测试效果良好。