Multibeam radar based on linear frequency modulated waveform diversity

被引：5
作者：
Kocjancic, Leon [1 ]
Balleri, Alessio [1 ]
Merlet, Thomas [2 ]
机构：
[1] Cranfield Univ, Def Acad UK, Ctr Elect Warfare Informat & Cyber, Shrivenham SN6 8LA, Wilts, England
[2] Thales Optron SAS, 2 Ave Gay Lussac, F-78995 Elancourt, France
来源：
IET RADAR SONAR AND NAVIGATION | 2018年 / 12卷 / 11期
关键词：
diversity reception; signal processing; pulse compression; frequency modulation; FM radar; chirp modulation; optical modulation; radar signal processing; radar antennas; linear frequency modulated waveform diversity; multibeam radar systems; orthogonal waveforms; digital signal processing; pulse compression properties; Doppler tolerance; MBR channels; LFM chirps; Gaussian amplitude envelopes; orthogonal properties; chirp design diversity; diverse frequency slopes; frequency offsets; LFM signals; COLOCATED MIMO RADAR; OFDM RADAR; DESIGN; OPTIMIZATION; ANTENNAS; SYSTEMS;
D O I：
10.1049/iet-rsn.2018.5029
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Multibeam radar (MBR) systems based on waveform diversity require a set of orthogonal waveforms in order to generate multiple channels in transmission and extract them efficiently at the receiver with digital signal processing. Linear frequency modulated (LFM) signals are extensively used in radar systems due to their pulse compression properties, Doppler tolerance, and ease of generation. Here, the authors investigate the level of isolation between MBR channels based on LFM chirps with rectangular and Gaussian amplitude envelopes. The orthogonal properties and the mathematical expressions of the isolation are derived as a function of the chirp design diversity, and specifically for diverse frequency slopes and frequency offsets. The analytical expressions are validated with a set of simulations as well as with experiments at C-band using a rotating target.
引用
收藏
页码：1320 / 1329
页数：10
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