Gun outer ballistic initial velocity measurement radar sight line correction method

The invention relates to an artillery outer ballistic initial velocity measurement radar sight line correction method, which comprises the following steps of: establishing a muzzle three-dimensional coordinate system on the basis of an artillery outer ballistic theory, and establishing a correction triangle between a radar apparent velocity vector and a muzzle coordinate system velocity vector according to radar position coordinates and firing angle information; according to an artillery outer ballistic initial speed identification principle, a smooth filtering method, a least square second-order polynomial fitting method and a speed integration method are adopted, a function relation of speed and distance along with time in a radar coordinate system is established, accurate calculation of a time-varying included angle between an actual speed direction of a shell and a radar measurement sight line is realized in a triangle correction process, and a time-varying angle between the actual speed direction of the