The application provides a kind of intelligent metasurface assisted near-field time division integrated sensing method and
system, it is related to
wireless communication field.The application designs integrated
sensing system by introducing RIS and single antenna
receiver, avoids complex full-duplex
base station and multi-antenna
receiver, significantly reduces
hardware complexity and implementation cost under the premise of ensuring high-quality communication and sensing performance;The adjustable frame structure designed separates the communication
subframe and the sensing
subframe completely, decouples the communication beam optimization and the sensing
signal design, respectively realizes the communication and sensing functions in a purer
signal environment;In the communication
subframe, the communication and rate maximization are realized, and in the sensing subframe, the sensing capability is enhanced through the transmission
beam pattern matching, which significantly improves the overall communication rate and sensing accuracy of the
system;Finally, a virtual multi-dimensional receiving
signal of multiple passive targets in the near field of RIS is constructed through repetition coding design, and then the 2D-MUSIC
algorithm is used to estimate the
target angle and distance parameters.