The application discloses a kind of motion target detection and positioning method based on general OFDM communication
signal, it is applied to motion target detection and positioning technical field, when using OFDM communication
signal as
radiation source to carry out target detection and positioning to traditional method, often encounter the problem that target
echo signal is difficult to capture synchronization.This application first,
system carries out pre-
processing to local general OFDM communication
signal and extracts
cell ID information and synchronization sequence;Then, receive
echo signal from motion target, and carry out synchronization preprocessing and parameter extraction to
echo signal;Then, target echo signal is converted to OFDM symbol domain and is analyzed, in the symbol domain, the correlation matrix of local transmitting signal and target echo signal is calculated;Subsequently, extract the distance, doppler and echo
signal propagation delay information of motion target from correlation result.Finally, based on these extracted information, the accurate detection and positioning of motion target are realized.