Helicopter landing assisting method based on wireless ultraviolet MIMO

The invention discloses a helicopter landing assisting method based on wireless ultraviolet MIMO. Four transmitting ends are fixed at four corners of a landing point. Each transmitting end sends a signal through utilization of an ultraviolet laser MIMO LEDs array in a self-defined scanning mode, the sent signals are coded, and the coded signals are sent through different antennas, thereby waitingfor the arrival of a helicopter. When a receiving end of the helicopter receives the coded signals sent by the ultraviolet laser MIMO LEDs array, the helicopter is guided to land safely through alignment with the sky above the center of the landing point according to the obtained signals. According to the method, through utilization of the advantages that an ultraviolet light communication technology is long in delay, narrow in bandwidth and low in channel multiplex ratio, through utilization of directionality of NLOS communication and through application of an MIMO technology and space and time division coding to wir