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S波段高分辨寬幅SAR輻射定標(biāo)及誤差分析方法

劉亞波,  劉霖,  童智勇,  喻忠軍

劉亞波, 劉霖, 童智勇, 喻忠軍. S波段高分辨寬幅SAR輻射定標(biāo)及誤差分析方法[J]. 電子與信息學(xué)報(bào), 2019, 41(8): 1946-1951. doi: 10.11999/JEIT180983
引用本文: 劉亞波, 劉霖, 童智勇, 喻忠軍. S波段高分辨寬幅SAR輻射定標(biāo)及誤差分析方法[J]. 電子與信息學(xué)報(bào), 2019, 41(8): 1946-1951. doi: 10.11999/JEIT180983
Yabo LIU, Lin LIU, Zhiyong TONG, Zhongjun YU. A Radiometric Calibration and Error Analysis Method for HWRS SAR at S-band[J]. Journal of Electronics & Information Technology, 2019, 41(8): 1946-1951. doi: 10.11999/JEIT180983
Citation: Yabo LIU, Lin LIU, Zhiyong TONG, Zhongjun YU. A Radiometric Calibration and Error Analysis Method for HWRS SAR at S-band[J]. Journal of Electronics & Information Technology, 2019, 41(8): 1946-1951. doi: 10.11999/JEIT180983

S波段高分辨寬幅SAR輻射定標(biāo)及誤差分析方法

doi: 10.11999/JEIT180983 cstr: 32379.14.JEIT180983

  • 中國科學(xué)院電子學(xué)研究所 北京 100190

基金項(xiàng)目: 國家自然科學(xué)基金(61201405)，中國科學(xué)院青年創(chuàng)新促進(jìn)會(huì)(2017170)
詳細(xì)信息
    作者簡介:

    劉亞波：男，1984年生，副研究員，研究方向?yàn)楹铣煽讖嚼走_(dá)系統(tǒng)仿真與信號(hào)處理

    劉霖：男，1982年生，副研究員，研究方向?yàn)楹铣煽讖嚼走_(dá)數(shù)字信號(hào)處理

    童智勇：男，1966年生，研究員，研究方向?yàn)闄C(jī)載合成孔徑雷達(dá)系統(tǒng)設(shè)計(jì)

    喻忠軍：男，1980年生，研究員，研究方向?yàn)闄C(jī)載合成孔徑雷達(dá)系統(tǒng)設(shè)計(jì)

    通訊作者:

    劉亞波 ybliu@mail.ie.ac.cn

  • 中圖分類號(hào): TN958.2

A Radiometric Calibration and Error Analysis Method for HWRS SAR at S-band

  • Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China

Funds: The National Natural Science Foundation of China (61201405), The Youth Innovation Promotion Association of Chinese Academy of Sciences (2017170)
  • 摘要: 合成孔徑雷達(dá)(SAR)系統(tǒng)的輻射定標(biāo)可以構(gòu)建SAR圖像與地物后向散射截面積(RCS)的關(guān)系，反演目標(biāo)物理特性，滿足SAR定量化遙感需求。相對(duì)于其它波段，S波段SAR的定量化遙感工作罕見報(bào)道。該文利用已知SAR及平臺(tái)參數(shù)進(jìn)行S波段SAR輻射定標(biāo)處理，首先推得了圖像像素值與目標(biāo)后向散射系數(shù)的關(guān)系，接下來詳細(xì)分析了各項(xiàng)誤差對(duì)定標(biāo)精度的影響，給出了天線指向誤差對(duì)定標(biāo)精度影響的解析表達(dá)式。該文的分析有利于建立各參數(shù)與輻射定標(biāo)精度的關(guān)系，方便設(shè)計(jì)時(shí)候的誤差分配。該文給出了草地、道路和平靜水面的S波段后向散射截面積統(tǒng)計(jì)值。最終實(shí)際數(shù)據(jù)處理結(jié)果表明，該系統(tǒng)利用該定標(biāo)方法可以在20°的視角范圍內(nèi)實(shí)現(xiàn)較高的絕對(duì)輻射精度。
    Abstract: The radiometric calibration of Synthetic Aperture Radar (SAR) can establish a mapping relationship between SAR image and Radar Cross Section (RCS) of ground objects, which benefits the inversion of target physical properties, and further meets the needs of quantitative remote sensing. Compared with other wavebands, the reports about SAR works in S-band are rare. This paper focuses on the radiometric calibration of radar at S-band by using the known parameters of radar and plane. Firstly, the relationship between image pixel intensity and RCS of target is derived. Then, a detailed analysis on each error component is implemented, in which, the affection of antenna direction on radiometric calibration precision is given by the analytic expression. The analysis and simulation is propitious to error allocation during the design period. In addition, the mean RCS statistics of grass, road and calm water are given. The real data processing results show that a sufficient accuracy in 20° view angle can be achieved by using the radiometric calibration method.
    • HTML全文

  • 圖  1  sinc形天線方向圖誤差系數(shù)值與a的關(guān)系

    圖  2  cosine形天線方向圖誤差系數(shù)值與a的關(guān)系

    圖  3  波束指向誤差對(duì)sinc形天線方向圖的影響

    圖  4  波束指向誤差對(duì)cosine形天線方向圖的影響

    圖  5  Google earth定標(biāo)場(chǎng)布設(shè)圖

    圖  6  定標(biāo)場(chǎng)成像結(jié)果

    圖  7  S波段草地、光滑道路和平靜水面的RCS值

    表  1  雷達(dá)及飛行參數(shù)表

    參數(shù)數(shù)值
    平均功率(W)19.2
    距離范圍(m)3450～6250
    視角范圍(°)48～70
    采樣頻率(MHz)400
    波長(m)0.09375
    距離采樣間隔(m)0.375
    接收機(jī)增益(dB)67
    飛機(jī)速度(m/s)70
    下載: 導(dǎo)出CSV

    表  2  定標(biāo)器RCS測(cè)量結(jié)果(dB)

    像素值絕對(duì)輻射精度
    定標(biāo)圖檢驗(yàn)圖定標(biāo)圖檢驗(yàn)圖1°誤差圖
    T1128.8128.220.519.918.7
    T2128.4128.420.120.019.0
    T3128.4128.720.120.319.3
    T4128.9129.320.621.020.1
    T5129.1129.520.821.220.9
    T6129.1129.420.821.021.4
    T7128.9129.020.620.622.0
    T8128.6128.620.320.221.9
    T9128.3128.720.020.322.7
    T10128.3128.620.020.222.4
    下載: 導(dǎo)出CSV
  • FREEMAN A. SAR calibration: An overview[J]. IEEE Transactions on Geoscience and Remote Sensing, 1992, 30(6): 1107–1121. doi: 10.1109/36.193786
    SCHWERDT M, HOUNAM D, ALVAREZ-PEREZ J L, et al. TerraSAR-X: Calibration concept of a multiple mode high resolution SAR[C]. The 25th International Geoscience and Remote Sensing Symposium, 2005, Seoul, Korea, 2005: 4874–4877.
    CHEN Quan, LI Zhen, ZHANG Ping, et al. A preliminary evaluation of the GaoFen-3 SAR radiation characteristics in land surface and compared with radarsat-2 and Sentinel-1A[J]. IEEE Geoscience and Remote Sensing Letters, 2018, 15(7): 1040–1044. doi: 10.1109/LGRS.2018.2821238
    ZHANG Linjian, GAO Yesheng, WANG Kaizhi, et al. A subspace algorithm of calibrating channel gain and phase errors for HRWS SAR imaging[C]. 2017 IEEE Radar Conference, Seattle, USA, 2017: 269–272.
    LI Huimin, MOUCHE A, STOPA J E, et al. Calibration of the normalized Radar Cross Section for Sentinel-1 wave mode[J]. IEEE Transactions on Geoscience and Remote Sensing, 2019, 57(3): 1415–1522. doi: 10.1109/TGRS.2018.2867035
    GUCCIONE P, SCAGLIOLA M, and GIUDICI D. Low-frequency SAR radiometric calibration and antenna pattern estimation by using stable point targets[J]. IEEE Transactions on Geoscience and Remote Sensing, 2018, 56(2): 635–646. doi: 10.1109/TGRS.2017.2752228
    SCHMIDT K, RAMON N T, and SCHWERDT M. Radiometric accuracy and one-year-stability of sentinel-1A determined using point targets[C]. The 47th European Microwave Conference, Nuremberg, Germany, 2017: 1075–1078. doi: 10.23919/EuMC.2017.8231058.
    SCHWERDT M, BRAUTIGAM B, BACHMANN M, et al. Final TerraSAR-X calibration results based on novel efficient methods[J]. IEEE Transactions on Geoscience and Remote Sensing, 2010, 48(2): 677–689. doi: 10.1109/TGRS.2009.2035308
    SCHWERDT M, BRAEUTIGAM B, BACHMANN M, et al. TerraSAR-X calibration results[C]. 7th European Conference on Synthetic Aperture Radar, Friedrichshafen, Germany, 2008: 1–4.
    TOUZI R, HAWKINS R K, and COTO S. High-precision assessment and calibration of polarimetric RadarSAT-2 SAR using transponder measurements[J]. IEEE Transaction on Geoscience and Remote Sensing, 2013, 51(1): 487–503. doi: 10.1109/TGRS.2012.2201946
    SHEN Ting, LI Jun, WANG Zhirui, et al. The airborne X-SAR calibration with high resolution[C]. 2016 CIE International Conference on Radar (RADAR), Guangzhou, China, 2017: 1–5.
    汪偉, 李軍, 胡慶榮. 基于點(diǎn)目標(biāo)的機(jī)載毫米波SAR輻射定標(biāo)[C]. 第三屆高分辨率對(duì)地觀測(cè)學(xué)術(shù)年會(huì)分會(huì)論文集, 北京, 2014: 502–513
    周曉, 曾琪明, 焦健, 等. 星載SAR傳感器外場(chǎng)定標(biāo)實(shí)驗(yàn)研究—以TerraSAR-X衛(wèi)星為例[J]. 遙感技術(shù)與應(yīng)用, 2014, 29(5): 711–718.

    ZHOU Xiao, ZENG Qiming, JIAO Jian, et al. Research on Space-borne SAR field calibration experiment—A case study of TerraSAR-X field calibration[J]. Remote Sensing Technology and Application, 2014, 29(5): 711–718.
    鄭晨, 黃磊, 陳權(quán). 點(diǎn)目標(biāo)的機(jī)載SAR輻射定標(biāo)實(shí)驗(yàn)精度分析[J]. 遙感信息, 2015, 30(4): 14–19. doi: 10.3969/j.issn.1000-3177.2015.04.003

    ZHENG Chen, HUANG Lei, and CHEN Quan. Accuracy of airborne SAR radiometric calibration with point target[J]. Remote Sensing Information, 2015, 30(4): 14–19. doi: 10.3969/j.issn.1000-3177.2015.04.003
    ULABY F T and DOBSON M C. Handbook of Radar Scattering Statistics for Terrain[M]. Norwood, MA: Artech House, Inc., 1989: 173–177.
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出版歷程
  • 收稿日期:  2018-10-19
  • 修回日期:  2019-03-14
  • 網(wǎng)絡(luò)出版日期:  2019-04-16
  • 刊出日期:  2019-08-01

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