The invention provides an
azimuth trace acquisition method and device for a flexible towed
linear array sonar noise target so as to effectively solve a problem of target
azimuth trace interruption anddeviation caused by flexible towed
linear array formation disturbance and
underwater acoustic environment complexity, and improve the accuracy of a
sonar noise target tracking
azimuth trace. The method comprises the following steps: step 1, performing split sub-array
frequency domain beam forming on current frame data of an
array element channel according to flexible towed
linear array array manifold information and a previous frame target orientation; step 2, carrying out target azimuth accurate measurement on the output formed by the
frequency domain wave beam according to a
processing frequency band; step 3, performing association confirmation on the
target angle measurement value of the current frame by using a variable tracking gate, and removing and correcting outliers; and step 4,carrying out smooth filtering
processing on the multiple frames of target azimuth values to obtain a stable and continuous target azimuth trace. The device applies the method. According to the invention, the technical problem of improving the accuracy of the
sonar noise target tracking azimuth trace is solved.