Dechirping Compression Method for Nonlinear Frequency Modulation Waveforms

doi:10.1109/LGRS.2018.2875893

	Dechirping Compression Method for Nonlinear Frequency Modulation Waveforms
	Liu, Jiafang 1; Zhang, Yunhua 2; Dong, Xiao 3
刊名	IEEE Geoscience and Remote Sensing Letters
	2018
ISSN号	1545-598X
DOI	10.1109/LGRS.2018.2875893
英文摘要	This letter proposes a novel dechirp processing method for wideband nonlinear frequency modulation (NLFM) waveform which enables low sampling rate of data. As we know, NLFM waveform can easily realize optimal shape of power spectral density which helps to achieve better pulse compression result with low range sidelobes without signal-to-noise ratio degradation caused by weighting as we usually do for LFM waveforms. In the approach, hamming window is adopted in the generation of the NLFM waveform for better balance on the low range sidelobes and a relative small bandwidth. In dechirp operation, the NLFM radar echoes are mixed with a local reference LFM signal, and thus narrowband signals are resulted and only low sampling rate is needed. The dechirped NLFM signals are then up-sampled and inverse dechirped by software and finally matched filtering is conducted to complete pulse compression. Both numerically simulated data and real radar data are processed to verify the effectiveness of the proposed method. IEEE
语种	英语
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/6557]
专题	国家空间科学中心_微波遥感部
作者单位	1.Key Laboratory of Microwave Remote Sensing, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China, and also with the University of Chinese Academy of Sciences, Beijing 100049, China (e-mail: jiafangliu@163.com).; 2.Key Laboratory of Microwave Remote Sensing, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China, and also with the University of Chinese Academy of Sciences, Beijing 100049, China.; 3.Key Laboratory of Microwave Remote Sensing, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China.
推荐引用方式 GB/T 7714	Liu, Jiafang,Zhang, Yunhua,Dong, Xiao. Dechirping Compression Method for Nonlinear Frequency Modulation Waveforms[J]. IEEE Geoscience and Remote Sensing Letters,2018.
APA	Liu, Jiafang,Zhang, Yunhua,&Dong, Xiao.(2018).Dechirping Compression Method for Nonlinear Frequency Modulation Waveforms.IEEE Geoscience and Remote Sensing Letters.
MLA	Liu, Jiafang,et al."Dechirping Compression Method for Nonlinear Frequency Modulation Waveforms".IEEE Geoscience and Remote Sensing Letters (2018).