Aircraft performance evaluation method and system based on evidence theory

The invention discloses an aircraft performance evaluation method and system based on an evidence theory, and the method comprises the steps: carrying out the external field test, digital simulation test and semi-physical simulation test of a to-be-tested aircraft, and obtaining the external field test data, digital simulation test data and semi-physical simulation test data of an aircraft performance index; respectively converting into evidence representation to obtain an external field test evidence body, a digital simulation test evidence body and a semi-physical simulation test evidence body of the aircraft performance indexes; respectively calculating comprehensive weights of the external field test evidence body, the digital simulation test evidence body and the semi-physical simulation test evidence body; based on the comprehensive weight, fusing the external field test evidence body, the digital simulation test evidence body and the semi-physical simulation test evidence body of the aircraft performan