Journal of Systems Engineering and Electronics ›› 2012, Vol. 34 ›› Issue (6): 1126-1130.doi: 10.3969/j.issn.1001-506X.2012.06.08

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Dechirp-based method for synthesizing high resolution range profile (HRRP) via stepped-frequency waveforms

JIN Sheng1,2, ZHU Tian-lin2, DENG Zhen-miao3, YANG Wen-jun4   

  1. 1. Radar Research Laboratory，Beijing Institute of Technology, Beijing 100081, China; 
    2. Beijing Institute of Tracking and Telecommunications Technology, Beijing 100094, China; 
    3. School of Information Science and Technology, Xiamen University, Xiamen 361005, China;
    4. Nanjing Institute of Electronics Technology, Nanjing 210013, China
  • Online:2012-06-18 Published:2010-01-03

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Abstract:

A novel method for synthesizing the high resolution range profile (HRRP) with respect to the stepped frequency waveforms, which is based on dechirp processing, is proposed. First, the received steppedfrequency pulses are dechirped by local reference signals. The wideband echoes are obtained by joining the dechirped pulses in order in timedomain. Finally, the 1-D HRRP and the 2-D inverse synthetic aperture radar (ISAR) images can be obtained according to the traditional processing. The up sampling, frequency shift and phase compensation operations are avoided with this new method, thus the processing complexity is reduced and this new method is easier to implement in radar systems.

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