The Principle of Synthesizing HRRP Based on a New OFDM Phase-coded Stepped-frequency Radar Signal
Orthogonal Frequency-Division Multiplexing (OFDM) phase-coded pulse is a wideband signal, of which the range resolution is inversely proportional to the bandwidth. However, it is a challenge to synthesize large bandwidth for OFDM phasecoded pulse since wide instantaneous bandwidth and high sampling rate requirements. To solve this problem, this paper proposes a new radar signal called OFDM phase-coded steppedfrequency (OFDM-PCSF) signal, of which the pulse train is stepped frequency, and each pulse is implemented with OFDM phase-coded chips. The property of OFDM-PCSF signal is analyzed at first. And then, the mathematical expressions of the high resolution range profiles (HRRP) are derived, assuming an elementary scenario of point-scattering targets. It mainly presents the influence of velocity on HRRP and investigates the parameter design and velocity compensation, which is helpful for the realization of OFDM imaging radar. Finally, the simulation results demonstrate the validity of the conclusions.
Orthogonal Frequency-Division Multiplexing phase-coded frequency-stepped high resolution range profile Doppler effect
Kai Huo Bin Deng Yongxiang Liu Weidong Jiang Junjie Mao
School of Electronic Science and Engineering National University of Defense Technology Changsha Hunan Province, China
国际会议
2010 IEEE 10th International Conference on Signal Processing(第十届信号处理国际会议 ICSP 2010)
北京
英文
1994-1998
2010-08-24（万方平台首次上网日期，不代表论文的发表时间）