Structure Optimization of Coded Polyphase Signals with the Enhanced Tolerance to the Doppler Frequency Shift
D. Szczegielniak a, A. Milewski b and M. Szczegielniak a
aFaculty of Telecommunications, Computer Science and Electrical Engineering, University of Technology and Life Sciences, al. S. Kaliskiego 7, 85-789 Bydgoszcz, Poland
bTele & Radio Research Institute, Ratuszowa 11, 03-450 Warszawa, Poland
Received: February 24, 2015
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The aim of this research was to verify if It is possible to solve the synthesis problem of polyphase codes efficiently with an acceptable quality in the context of radar applications - with the greatest possible effectiveness of the recognition of such signals in the presence of the noise and occurrence of the Doppler effect. The received results confirmed that the implemented optimization algorithm can search polyphase sequences successfully with a low level of sidelobes and an enhanced tolerance to the Doppler effect. Applying optimization methods allows to form ambiguity function in a measure in the assumed optimization range which seems to be encouraging for future examinations in the field of the computer optimization for the coded radar signals synthesis.

DOI: 10.12693/APhysPolA.128.452
PACS numbers: 84.40.Ua, 84.40.Xb