基于随机频率捷变的窄带雷达成像方法

Narrow-Band Radar Signal Imaging Based on the Random Frequency Agile Signal

现有窄带雷达分辨率不高,基于频率捷变信号“短时覆盖较宽载频范围”的特点,分析了随机频率捷变信号成像的可能性,提出了随机频率捷变信号成像的一般处理方法。通过仿真实验和配合目标放飞实验,对随机频率捷变信号成像的数学模型和处理方法进行了验证。结果表明,在一定条件下,窄带雷达可以用随机频率捷变信号成二维像,提高窄带雷达的距离分辨能力。

Due to the low resolution of existing narrow-band radar,the possibility of frequency agile imaging is analyzed and the general processing method of frequency agile signal imaging is proposed based on the characteristics of frequency agile signal over a wide range of wide carrier frequency. The mathematical model and the processing method of frequency agile signal imaging are verified by simulation experiment and target flight experiment. Under certain conditions,the results show that the narrow-band radar can be used to give two-dimensional image with frequency agile signal which can improve the range resolution.