Deception method for realizing accurate fixed-point offset of unmanned aerial vehicle in integrated navigation mode

A deception method for realizing accurate fixed-point offset of an unmanned aerial vehicle in an integrated navigation mode comprises the following steps: S1, constructing a state space model of a tight integrated navigation system, and analyzing the significance and stability of a steady-state gain matrix; s2, adopting a negative feedback correction mode to obtain a total offset analytic expression of GNSS/INS tightly integrated navigation position output estimation at a k + r moment, wherein the total offset analytic expression takes a steady-state gain element as a coefficient and takes pseudo-range offset applied to a satellite signal from the k moment to the k + r moment as a variable; s3, analyzing the relation between the total offset of the pseudo-range and the position deviation caused by the total offset of the pseudo-range, and enabling the GNSS/INS integrated navigation position estimation result to generate accurate fixed-point offset through a false satellite signal; and S4, aligning the specifi