Extraction of Target Distance Information in Undersea Warfare for Submarine
HE Qinghai
DING Wenqiang
Abstract：Striations have appeared in plots of Low Frequency Analysis Recording(LOFAR) spectrum in acoustic envi‐ronment of the shallow water .The distance change ratio of target can be described by distance characteristic feature .It can be extracted from LOFAR spectrum striations .Low precision of distance characteristic feature has been obtained because of the low signal to noise ratio and striation pollution .In order to make the striations more clearly ,an image denoising method has been put forward .The ocean experimental results show that the precision of distance characteristic feature is one times higher after LOFAR spectrum image processing .
Keywords：distance characteristic featureLOFAR spectrumimage denoising
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 48-50,181 )