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一種新的高重頻寬帶相干激光雷達(dá)系統(tǒng)研究

李光祚 默迪 王寧 王然 張珂殊 張?jiān)鲚x 吳一戎

李光祚, 默迪, 王寧, 王然, 張珂殊, 張?jiān)鲚x, 吳一戎. 一種新的高重頻寬帶相干激光雷達(dá)系統(tǒng)研究[J]. 電子與信息學(xué)報(bào), 2018, 40(3): 525-531. doi: 10.11999/JEIT170479
引用本文: 李光祚, 默迪, 王寧, 王然, 張珂殊, 張?jiān)鲚x, 吳一戎. 一種新的高重頻寬帶相干激光雷達(dá)系統(tǒng)研究[J]. 電子與信息學(xué)報(bào), 2018, 40(3): 525-531. doi: 10.11999/JEIT170479
LI Guangzuo, MO Di, WANG Ning, WANG Ran, ZHANG Keshu, ZHANG Zenghui, WU Yirong. A Novel Coherent Ladar System with High Repetition Frequency and Wide Bandwidth[J]. Journal of Electronics & Information Technology, 2018, 40(3): 525-531. doi: 10.11999/JEIT170479
Citation: LI Guangzuo, MO Di, WANG Ning, WANG Ran, ZHANG Keshu, ZHANG Zenghui, WU Yirong. A Novel Coherent Ladar System with High Repetition Frequency and Wide Bandwidth[J]. Journal of Electronics & Information Technology, 2018, 40(3): 525-531. doi: 10.11999/JEIT170479

一種新的高重頻寬帶相干激光雷達(dá)系統(tǒng)研究

doi: 10.11999/JEIT170479

A Novel Coherent Ladar System with High Repetition Frequency and Wide Bandwidth

  • 摘要: 該文提出一種新的同時(shí)具有高重復(fù)頻率和大帶寬性能的相干激光雷達(dá)系統(tǒng)。該系統(tǒng)基于IQ調(diào)制器正交調(diào)制技術(shù)與帶寬合成信號處理技術(shù),使得系統(tǒng)能夠同時(shí)滿足大帶寬和高重復(fù)頻率的要求,解決了傳統(tǒng)激光雷達(dá)寬帶信號調(diào)制速度慢的問題。該系統(tǒng)能夠生成高重頻、大帶寬的相干線性調(diào)頻激光雷達(dá)信號,在高分辨距離成像、(逆)合成孔徑激光雷達(dá)成像、距離分辨的振動(dòng)測量等方面,具有重要的應(yīng)用價(jià)值。文中闡述了寬帶高重復(fù)頻率調(diào)制的原理和方法、基于微波域頻率步進(jìn)的帶寬合成信號處理方法,并進(jìn)行光纖環(huán)路實(shí)驗(yàn)和自由空間實(shí)驗(yàn)。作為演示,該激光雷達(dá)系統(tǒng)獲得了16.7 kHz重復(fù)頻率、6 GHz帶寬,實(shí)現(xiàn)了優(yōu)于2.5 cm距離向分辨率成像及遠(yuǎn)距離運(yùn)動(dòng)目標(biāo)逆合成孔徑激光雷達(dá)成像。實(shí)驗(yàn)結(jié)果證明了該系統(tǒng)與方法的有效性。
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    LI G, WANG N, WU Y, et al. Imaging method for airborne SAL data[J]. Electronics Letters, 2017, 53(5): 351-353. doi: 10.1049/el.2016.4205.
    SCHIMPF H, WAHLEN A, and ESSEN H. High range resolution by means of synthetic bandwidth generated by frequency- stepped chirps[J]. Electronics Letters, 2003, 39(18): 1346-1348. doi: 10.1049/el:20030829.
    ESSEN H, SCHIMPF H, and WAHLEN A. Improvement of the millimeterwave SAR MEMPHIS for very high resolution [R]. FGAN-FHR Technical Report, Werthhoven, 2003.
    王巖飛, 劉暢, 李和平, 等. 基于多通道合成的優(yōu)于 0.1 m 分辨率的機(jī)載 SAR 系統(tǒng)[J]. 電子與信息學(xué)報(bào), 2013, 35(1): 29-35. doi: 10.3724/SP.J.1146.2011.01370.
    WANG Yanfei, LIU Chang, LI Heping, et al. An airborne SAR with 0.1 m resolution using multi-channel synthetic bandwidth[J]. Journal of Electronics Information Technology, 2013, 35(1): 29-35. doi: 10.3724/SP.J.1146.2011. 01370.
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出版歷程
  • 收稿日期:  2017-05-18
  • 修回日期:  2017-11-24
  • 刊出日期:  2018-03-19

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