Anti-radiation seeker anti-active induced bias direction finding method and system

The invention discloses an anti-active induced bias direction finding method for an anti-radiation seeker. The method comprises the following specific steps: establishing a space direction finding model; constructing a space angle, and converting two-dimensional direction finding into one-dimensional direction finding; defining an atom norm after convex relaxation, constructing a positive semidefinite programming problem, and solving by using SDP; in combination with the spectrum estimation formula and a Toeplitz matrix, a spectrum peak value is searched, and a to-be-solved space angle is obtained; the method comprises the following steps: meshing a to-be-measured airspace, dividing the to-be-measured airspace into a series of discrete angles, and generating a pairing dictionary to replace a redundant dictionary Converting the multi-observed quantity model into a single observed quantity, and establishing a new sparse direction finding model; sparse reconstruction is carried out through an orthogonal matching