Title :
Coordinating complementary waveforms across time and frequency
Author :
Dang, Wenbing ; Pezeshki, Ali ; Howard, Stephen ; Moran, William
Author_Institution :
Colorado State Univ., Fort Collins, CO, USA
Abstract :
In this paper, we consider a MIMO radar consisting of multiple collocated transmit/receive elements, where each transmit/receive pair operates at a different subcarrier frequency. Each transmit element is assumed to be waveform agile, meaning that it can select its waveform across time from a waveform library on a pulse by pulse basis. We consider a waveform library consisting of simply two component waveforms. The component waveforms are Golay complementary and are obtained by phase coding a narrow pulse with a pair of Golay complementary sequences. We show that by properly sequencing Golay complementary waveforms across time and frequency we can annihilate the range sidelobes of the radar point-spread function inside a desired Doppler interval around the zero-Doppler axis. This enables us to extract weak targets, which are located near stronger reflectors.
Keywords :
Golay codes; MIMO radar; optical transfer function; Golay complementary sequences; MIMO radar; component waveforms; coordinating complementary waveforms; multiple collocated transmit/receive elements; narrow pulse; phase coding; radar point-spread function; subcarrier frequency; transmit element; waveform across time; waveform agile; waveform library; zero-Doppler axis; Doppler effect; Doppler radar; Libraries; MIMO radar; Receivers; Time frequency analysis; Doppler resolution; MIMO radar; Range sidelobe suppression; Waveform coordination;
Conference_Titel :
Statistical Signal Processing Workshop (SSP), 2012 IEEE
Conference_Location :
Ann Arbor, MI
Print_ISBN :
978-1-4673-0182-4
Electronic_ISBN :
pending
DOI :
10.1109/SSP.2012.6319845