N2 - In many physical experiments, linear frequency modulated (LFM) signals are widely used to probe objects in different environments, from outer-space to underwater. These signals allow a significant improvement in measurement resolution, even when the observation distance is great. For example, using LFM probe signals in underwater investigations enables discovery of even small objects covered by bottom sediments. Recognition of LFM (chirp) signals depends on their compression based on matched filtering. This work presents two simple solutions to improve the resolution of the short chirp signals recognition. These methods are effective only if synchronization between the signal and matched filter (MF) is obtained. This work describes both the aforementioned methods and a method of minimizing the effects of the lack of synchronization. The proposed matched filtering method, with the use of n parallel MFs and other techniques, allows only one sample to be obtained in the main lobe and to accurately locate its position in the appropriate sampling period Ts with accuracy Ts/n. These approaches are appropriate for use in probe signal processing. L1 - http://www.journals.pan.pl/Content/104456/PDF/12_paper.pdf L2 - http://www.journals.pan.pl/Content/104456 PY - 2011 IS - No 4 EP - 871 DO - 10.2478/v10168-011-0057-1 KW - sonar KW - LFM signal KW - matched filtering A1 - Pogribny, Włodzimierz A1 - Leszczyński, Tadeusz PB - Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics VL - vol. 36 DA - 2011 T1 - Optimization of Short Probe Linear Frequency Modulated Signal Parameters SP - 861 UR - http://www.journals.pan.pl/dlibra/publication/edition/104456 T2 - Archives of Acoustics