The invention relates to a method for estimating
precession parameters of middle-section targets of ballistic missiles, in particular to a method for estimating the
precession parameters of the middle-section targets of the ballistic missiles. The objective of the invention is to solve the problems that an existing
precession feature estimation method cannot utilize the micro-motion features of general scattering points such as an empennage and the like, and the existing precession
feature estimation method is low in identification capability for true and false targets. The method comprises the following steps: 1, calculating a cosine value of an included angle between a
radar A relative target direction and a
radar B relative target direction; 2, obtaining a
radar Doppler spectrum; 3, obtaining a boundary spectrum, searching the position of a frequency
peak value, and taking the mean value of the position of the frequency
peak value; 4, calculating the
estimation result of the target coning frequency, and recording the phase of the
frequency spectrum at the
peak value position at the same time; 5, calculating the spin frequency of the target; taking a
phase difference average value; 6, substituting all known parameters into the equation set, and solving thetaA, thetaB, thetaC and thetaP. The method is used in the field of
signal processing.