Methods of Increase of Short Chirp Signals Compression

The worked out methods of increase of a compression in time domain of the short broadband signals with the use of linear modulation of frequency (the so-called chirp signals) which product BT does not exceed 100 are studied in this work. The choice of a smoothing window, an initial phase, and a sampling rate of the short chirp signals as well as the influence of nonlinear operations on the convolution results have been investigated in order to essentially narrow a main lobe as well as increase the ratio of the main lobe to side lobes which all are the filtration results. The best result of the compression occurs when at the same time there is used the rectangular window, the nonlinear operations, and the chosen parameters of the short chirp signal. These methods found application in the worked-out structure of the matching filter (MF).