Periodic Compound Multiphase Signals with an Additional Amplitude Modulation investigation for Marine Radars

Abstract

This paper has presented the basis of a compound multiphase waveform investigation with additional amplitude modulation, capable of controlling a waveform pick-factor, suitable for use with marine radar. The waveform shows good Doppler tolerance, with the low side-lobes performance maintained over the central zone of an ambiguity function. In [1] was introduced the parameter which determined the way of multiplication of a base (inner) and a external (outer) sequences under formation compound multiphase waveform from Kronecker product to term to term product. Value of this parameter in essential way have influence on the form of phase modulation of compound waveform and on behavior of ambiguity function side-lobes in Doppler strip (symmetrically situated near zero Doppler frequency). Before we were considered only two uttermost values of the parameter, but in this article the different possible values of the parameter are also considered. It has been shown that a compromise between side-lobes suppression and the value of pick-factor can be found. These waveforms allow achieving better results as compared to compound multiphase waveforms without additional amplitude modulation under mismatched weighting filtering. In this article we considered periodic mode of Radar.