Prof.  Tao  YU
Chinese Aeronautical Radio Electronics Research Institute,  China

Title: Single-basefull-frequencyDopplerdirection-findingmethod basedonfrequencyshift-pathdifferencemapping

Abstract:

Aiming at the problems of high hardware complexity, poor frequency band adaptability,and large errorsindynamic scenariosexisting in traditional Dopplerdirection-finding technology,thispaper creatively proposes a full-frequency single-base Doppler direction-finding method based on frequency shift - path difference mapping. This method employs radial velocity differential approximation technology to construct a mathematical mapping relationship between the frequency domain and geometric space, realizing an equivalent transformation between single-point measurement and distance length. Through variable substitution, the dual-base path difference equation is reconstructed into a single-base frequency shift direction-finding model. Relying on the multi-element linear positioning theory, this method not only achieves seamless adaptation across all frequency bands but also significantly reduces system complexity. This method provides a new underlying technical architecture for mobile sensing platforms and has significant application potential in fields such as military reconnaissance and aviation navigation. It combines technological innovation with engineering practicality, promising to drive the innovationofDopplerdirection-findingtechnology.

Biography:

Professor Yu Tao, a leading academic figure in the field of passive detection and localization technology in China, was honored with the "Asia Lifetime Achievement Award" by Asian Figures in 2025. With decades of dedicated research in this domain, he pioneered several core theories, including the two-dimensional planar bistatic localization model, the ambiguity-free phase difference localization method, and the Doppler-based ranging fusion algorithm. These innovations have effectively broken through key bottlenecks in passive localization technology and have laid the foundation for a critical technical system supporting national strategic security. Professor Yu has published over 200 research papers, authored two academic monographs, and filed more than 20 invention patents. In 2024, he was awarded five gold medals at international invention exhibitions for four core research achievements. Consistently committed to aligning scientific advancements with national needs, he is a key contributor to the development of Asia’s core scientific and technological competitiveness.