Communication navigation signal enhancement method and system for helicopter

The invention provides a communication navigation signal enhancement method and system for a helicopter, and the method comprises the following steps: collecting a first communication navigation signal received by the helicopter, carrying out the signal classification based on the characteristics of the first communication navigation signal, and obtaining a signal classification result; based on a signal classification result, filtering each type of signals, and constructing a received signal enhancement model; receiving and processing a second communication navigation signal sent by the helicopter by using a multi-antenna array technology, and constructing a sent signal enhancement model; integrating the receiving signal enhancement model and the sending signal enhancement model, and constructing a comprehensive signal enhancement model based on helicopter flight parameters; and based on the comprehensive signal enhancement model, enhancing the communication navigation signal for the helicopter to obtain a f