Silent and High Dynamic Target Recognition Using Single FM Receiver

Kejian Song, Yiran Wang, Jing Bai, Zhu Xiao, Zhuo Zhang, Zheng Chen, Huaji Zhou

Abstract: Silent high-dynamic target recognition using single receiver has garnered significant attention due to its advantages in safety and stealth within military operations. This paper presents an in-depth exploration of a silent high-dynamic target recognition method based on frequency modulation (FM) signals. The proposed method processes the FM signals with a least squares filtering approach and further implements the calculation of Cross-Ambiguity Function (CAF) mapping to achieve target imaging within the CAF spectrum. By capturing FM signals with an antenna array tuned to various orientations, we conducted empirical analysis using actual aircraft in flight as the target for identification. The recognition scheme put forth by our research is capable of precisely determining the velocity of the target and the relative distance parameters between dual base stations, facilitating accurate tracking of targets.