Title :
Polyphase-coded FM (PCFM) radar waveforms, part I: implementation
Author :
Blunt, Shannon ; Cook, Matthew ; Jakabosky, John ; De Graaf, Jean ; Perrins, Erik
Author_Institution :
Electr. Eng. & Comput. Sci. Dept., Univ. of Kansas, Lawrence, KS, USA
Abstract :
Polyphase radar codes promise enhanced performance and flexibility due to greater design freedom. While the search for better codes continues, the implementation issues of transmitter bandlimiting and nonlinear distortion have precluded their widespread use in high-power systems. This paper introduces a modified continuous phase modulation implementation that converts an arbitrary polyphase code into a nonlinear frequency-modulated waveform that is constant envelope and spectrally well contained. Experimental results assess the receive sampling and pulse compression effects.
Keywords :
FM radar; nonlinear distortion; phase modulation; pulse compression; radar transmitters; PCFM radar waveforms; arbitrary polyphase code; constant envelope; continuous phase modulation; high-power systems; nonlinear distortion; nonlinear frequency-modulated waveform; polyphase radar codes; pulse compression effect; sampling effect; transmitter bandlimiting; Encoding; Frequency modulation; Nonlinear distortion; Radar; Receivers; Transmitters;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
DOI :
10.1109/TAES.2014.130361