Reproducing Kernel Hilbert space methods to reduce pulse compression sidelobes

Authors:
J. A. Jordaan;M. A. van Wyk;B. J. van Wyk
Affiliations:
Tshwane University of Technology, Pretoria, South Africa;Tshwane University of Technology, Pretoria, South Africa;Tshwane University of Technology, Pretoria, South Africa
Venue:
IDEAL'07 Proceedings of the 8th international conference on Intelligent data engineering and automated learning
Year:
2007

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Abstract

Since the development of pulse compression in the mid- 1950's the concept has become an indispensable feature of modern radar systems. A matched filter is used on reception to maximize the signal to noise ratio of the received signal. The actual waveforms that are transmitted are chosen to have an autocorrelation function with a narrow peak at zero time shift and the other values, referred to as sidelobes, as low as possible at all other times. A new approach to radar pulse compression is introduced, namely the Reproducing Kernel Hilbert Space (RKHS) method. This method reduces sidelobe levels significantly. The paper compares a second degree polynomial kernel RKHS method to a least squares and L2P -norm mismatched filter, and concludes with a presentation of the representative testing results.