Wireless coverage method compatible with wireless column harmonic DRTD field intensity in real time

The invention provides a wireless coverage method compatible with wireless column modulation and DRTD field intensity in real time, a customized digital frequency conversion technology is adopted, simultaneous work of a 450MHz wireless column modulation system and a digital column modulation system is achieved, weak field wireless coverage communication equipment special for weak field coverage using the method can work at the frequency bands of 458 MHz and 403 MHz (or 413 MHz) at the same time in the uplink, and the frequency bands of the wireless column modulation system and the digital column modulation system can work at the same time. And the downlink can simultaneously work in the frequency bands of 413MHz (or 423MHz), 468MHz or 458 MHz. Therefore, the requirements of uplink and downlink same-frequency simplex and pilot-frequency duplex communication systems of an existing 450MHz wireless train dispatching system and the requirements of a full-duplex system of a digital train dispatching system are met