TFDNET: Time-Frequency Directional Enhancement Network for UAV and Bird Micro-Doppler Recognition Under Limited Sensing Symbols
Reliable recognition between unmanned aerial vehicles (UAVs) and birds is essential for low-altitude surveillance in integrated sensing and communication (ISAC) systems. In practical orthogonal frequency division multiplexing (OFDM)-ISAC systems, frame configurations limit sensing symbols, which degrades micro-Doppler...