基于希尔伯特变换的干涉仪信号处理

微波干涉仪是测量常规武器内弹道参数的重要设备,传统的雷达信号处理方法主要使用短时傅里叶变换,不能兼顾时间和频率分辨率。因此,提出一种基于希尔伯特变换的算法,该算法能够获得更高的时间分辨率和测量精度。该算法利用希尔伯特变换获得精确的相位信息,并利用相位与弹丸行程存在的线性关系,计算出弹丸的行程。通过对小口径火箭弹的微波干涉仪实测数据的分析,结果证明基于希尔波特变换的干涉仪信号处理方法与基于短时傅里叶变换的处理方法相比,具有更高的时域分辨率。

Signal Processing of Microwave Interferometer Based on Hilbert Transform

Microwave interferometer is an important device for inner ballistic measurement of conventional weapons.The traditional radar signal processing method which uses STFT can not get good time resolution and frequency resolution at the same time.To solve this problem,a new algorithm based on Hilbert Transform is proposed to get better time resolution and advanced measurement precision.Hilbert transform is used to obtain the accurate phase information and the ammunition travel can be calculated using its linear ...