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北斗三號(hào)基本系統(tǒng)空間信號(hào)質(zhì)量評(píng)估

宿晨庚 郭樹(shù)人 劉旭楠 饒永南 王萌

宿晨庚, 郭樹(shù)人, 劉旭楠, 饒永南, 王萌. 北斗三號(hào)基本系統(tǒng)空間信號(hào)質(zhì)量評(píng)估[J]. 電子與信息學(xué)報(bào), 2020, 42(11): 2689-2697. doi: 10.11999/JEIT190683
引用本文: 宿晨庚, 郭樹(shù)人, 劉旭楠, 饒永南, 王萌. 北斗三號(hào)基本系統(tǒng)空間信號(hào)質(zhì)量評(píng)估[J]. 電子與信息學(xué)報(bào), 2020, 42(11): 2689-2697. doi: 10.11999/JEIT190683
Chengeng SU, Shuren GUO, Xunan LIU, Yongnan RAO, Meng WANG. Signal Quality Assessment of BDS-3 Preliminary System[J]. Journal of Electronics & Information Technology, 2020, 42(11): 2689-2697. doi: 10.11999/JEIT190683
Citation: Chengeng SU, Shuren GUO, Xunan LIU, Yongnan RAO, Meng WANG. Signal Quality Assessment of BDS-3 Preliminary System[J]. Journal of Electronics & Information Technology, 2020, 42(11): 2689-2697. doi: 10.11999/JEIT190683

北斗三號(hào)基本系統(tǒng)空間信號(hào)質(zhì)量評(píng)估

doi: 10.11999/JEIT190683 cstr: 32379.14.JEIT190683
詳細(xì)信息
    作者簡(jiǎn)介:

    宿晨庚:男,1988年生,助理研究員,研究方向?yàn)樾l(wèi)星導(dǎo)航信號(hào)設(shè)計(jì)與試驗(yàn)評(píng)估

    郭樹(shù)人:男,1972年生,研究員,研究方向?yàn)樾l(wèi)星導(dǎo)航總體設(shè)計(jì)

    劉旭楠:女,1988年生,助理研究員,研究方向?yàn)樾l(wèi)星導(dǎo)航與遙感應(yīng)用

    饒永南:男,1983年生,副研究員,研究方向?yàn)樾l(wèi)星導(dǎo)航信號(hào)測(cè)試與評(píng)估

    王萌:女,1993年生,博士生,研究方向?yàn)閷?dǎo)航信號(hào)質(zhì)量評(píng)估算法研究

    通訊作者:

    宿晨庚 sucg@beidou.gov.cn

  • 中圖分類號(hào): TN967.1

Signal Quality Assessment of BDS-3 Preliminary System

  • 摘要: 全球衛(wèi)星導(dǎo)航系統(tǒng)(GNSS)空間信號(hào)(SIS)質(zhì)量直接影響了用戶使用性能。北斗三號(hào)衛(wèi)星不同于北斗二號(hào)衛(wèi)星,將繼續(xù)播發(fā)北斗二號(hào)老信號(hào),同時(shí)新增播發(fā)B1C, B2a等新信號(hào),多頻多信號(hào)多分量的信號(hào)體制較北斗二號(hào)更為復(fù)雜,對(duì)導(dǎo)航衛(wèi)星信號(hào)質(zhì)量控制提出了較大挑戰(zhàn)。2018年底北斗系統(tǒng)完成了18顆衛(wèi)星組網(wǎng),完成北斗三號(hào)基本系統(tǒng)建設(shè)并開(kāi)始提供全球服務(wù),有必要對(duì)北斗三號(hào)在軌衛(wèi)星空間信號(hào)質(zhì)量進(jìn)行量化評(píng)估。傳統(tǒng)空間信號(hào)質(zhì)量評(píng)估方法側(cè)重于單項(xiàng)的定性評(píng)估,而針對(duì)北斗三號(hào)復(fù)雜的信號(hào)體制,缺乏系統(tǒng)的、定量的分析結(jié)果。該文對(duì)標(biāo)北斗系統(tǒng)接口控制文件(ICD),從功率特性、頻域特性、時(shí)域特性、相關(guān)域特性和信號(hào)一致性等方面研究了不同參數(shù)配置對(duì)評(píng)估結(jié)果的影響,形成了一套面向新型調(diào)制方式和多頻多分量復(fù)用信號(hào)的量化評(píng)估方法?;?0 m大口徑天線的空間信號(hào)質(zhì)量評(píng)估系統(tǒng),對(duì)18顆MEO衛(wèi)星進(jìn)行了長(zhǎng)時(shí)間監(jiān)測(cè)跟蹤和數(shù)據(jù)采集,首次對(duì)北斗三號(hào)衛(wèi)星空間信號(hào)質(zhì)量進(jìn)行了全面量化評(píng)估。結(jié)果表明:北斗三號(hào)衛(wèi)星空間信號(hào)質(zhì)量良好,18顆MEO衛(wèi)星一致性較好,符合ICD指標(biāo)要求,可滿足服務(wù)區(qū)內(nèi)用戶需求;評(píng)估方法可用于對(duì)后續(xù)導(dǎo)航衛(wèi)星空間信號(hào)質(zhì)量的量化評(píng)估。
  • 圖  1  評(píng)估內(nèi)容

    圖  2  不同帶寬濾波后的S曲線偏差變化

    圖  3  QMBOC自相關(guān)函數(shù)

    圖  4  QMBOC信號(hào)S曲線

    圖  5  數(shù)字畸變分析示意圖

    圖  6  B1C信號(hào)功率譜

    圖  7  B2a信號(hào)功率譜

    圖  8  北斗三號(hào)衛(wèi)星B1頻段地面接收功率

    圖  9  B1Cd S曲線過(guò)零點(diǎn)偏差

    圖  10  B1Cp S曲線過(guò)零點(diǎn)偏差

    圖  11  B1C時(shí)域波形圖

    圖  12  B2a時(shí)域波形圖

    表  1  北斗三號(hào)MEO衛(wèi)星已公開(kāi)信號(hào)格式

    頻帶信號(hào)分量中心頻率(MHz)調(diào)制方式
    B1B1I1561.098BPSK(2)
    B1C1575.42QMBOC(6, 1, 1/11)
    B2B2a1176.45QPSK(10)
    B3B3I1268.52BPSK(10)
    下載: 導(dǎo)出CSV

    表  2  合成功率譜偏差均值(dB)

    信號(hào)M1M2M3M4M5M6M7M8M9
    B1C–0.2607–0.2052–0.2055–0.1863–0.2502–0.1209–0.0700–0.0572–0.3877
    B2a0.25780.30460.39120.08860.41540.40340.23210.33590.2825
    信號(hào)M10M11M12M13M14M15M16M17M18
    B1C–0.2323–0.4660–0.1585–0.0055–0.1714–0.3182–0.1586–0.0923–0.1014
    B2a0.32290.46140.38180.43570.32220.23510.14080.29560.2135
    下載: 導(dǎo)出CSV

    表  3  地面接收功率電平(dBW)

    信號(hào)M1M2M3M4M5M6M7M8M9
    B1C–155.305–154.415–155.156–155.620–155.423–154.715–155.581–155.570–154.734
    B2a–151.629–151.563–151.872–153.208–152.554–151.776–152.154–152.317–151.440
    信號(hào)M10M11M12M13M14M15M16M17M18
    B1C–154.750–155.363–155.324–154.974–154.951–156.105–155.029–156.162–155.5577
    B2a–151.353–152.373–152.183–151.097–151.748–153.673–152.034–153.691–152.0471
    下載: 導(dǎo)出CSV

    表  4  地面接收功率統(tǒng)計(jì)值(dBW)

    信號(hào)B1CB2a
    均值–154.38–152.15
    標(biāo)準(zhǔn)差0.470.74
    下載: 導(dǎo)出CSV

    表  5  信號(hào)各支路功率比

    信號(hào)分量M1M2M3M4M5M6M7M8M9
    B1Cp/B1Cd2.7072.8382.7942.7012.7692.7962.7552.7312.660
    B2ap/B2ad0.9970.9980.9910.9980.9950.9940.9990.9991.000
    信號(hào)分量M10M11M12M13M14M15M16M17M18
    B1Cp/B1Cd2.6572.6042.6802.7332.8342.5662.7522.6972.918
    B2ap/B2ad0.9970.9991.0000.9940.9980.9970.9971.0001.002
    下載: 導(dǎo)出CSV

    表  6  相關(guān)損耗分析結(jié)果(dB)

    信號(hào)分量M1M2M3M4M5M6M7M8M9
    B1Cp–0.381–0.491–0.441–0.373–0.444–0.415–0.050–0.202–0.165
    B1Cd–0.051–0.159–0.097–0.025–0.071–0.1230.1410.0440.182
    B1C–0.296–0.405–0.352–0.283–0.348–0.340–0.001–0.139–0.076
    B2ad0.0560.0390.0210.0510.0550.0540.0600.0420.053
    B2ap0.0550.0390.0190.0510.0580.0550.0610.0470.055
    B2a0.0550.0390.0200.0510.1130.0560.060.0440.054
    信號(hào)分量M10M11M12M13M14M15M16M17M18
    B1Cp–0.203–0.345–0.306–0.444–0.555–0.317–0.251–0.241–0.095
    B1Cd0.1430.1150.0140.024–0.0300.205–0.0320.0300.204
    B1C–0.114–0.227–0.224–0.323–0.42–0.183–0.195–0.171–0.018
    B2ad0.0520.0230.0550.0560.0530.0600.0550.0320.038
    B2ap0.0530.0250.0560.0580.0510.0590.0560.0330.038
    B2a0.0520.0240.0550.0570.0520.0590.0550.0320.038
    下載: 導(dǎo)出CSV

    表  7  相關(guān)損耗統(tǒng)計(jì)結(jié)果(dB)

    信號(hào)分量B1CpB1CdB1CB2adB2apB2a
    均值–0.320.03–0.230.050.050.05
    標(biāo)準(zhǔn)差0.140.110.130.010.010.02
    下載: 導(dǎo)出CSV

    表  8  S曲線偏差分析結(jié)果(ns)

    信號(hào)分量B1CdB1CpaB1Cp1B1Cp2B2adB2ap
    M10.0050.0060.1640.1380.1580.167
    M20.1480.1320.1070.1420.0690.074
    M30.1170.0670.0190.0750.0970.128
    M40.0520.0070.0560.0210.0800.080
    M50.1110.0600.2730.1860.0760.174
    M60.0530.0120.0830.0970.0900.084
    M70.1400.1480.0730.0700.0780.075
    M80.0520.110.1220.1120.0290.024
    M90.0050.0620.1340.1000.1880.182
    M100.1260.1200.1380.0640.1280.049
    M110.1110.1680.0360.0290.0260.027
    M120.0530.0050.1380.1130.0440.134
    M130.0500.0460.2770.1830.1190.128
    M140.0960.0510.1640.0830.0650.075
    M150.1670.1560.1770.0920.1350.142
    M160.0370.0250.2690.1660.1510.143
    M170.0070.0660.2470.1640.1290.126
    M180.0730.0110.1480.1320.1030.088
    下載: 導(dǎo)出CSV

    表  9  S曲線偏差統(tǒng)計(jì)結(jié)果

    信號(hào)分量B1CdB1CpaB1Cp1B1Cp2B2adB2ap
    均值0.080.070.150.100.100.10
    標(biāo)準(zhǔn)差0.050.050.080.050.040.05
    下載: 導(dǎo)出CSV

    表  10  正/負(fù)碼片與理想碼片長(zhǎng)度偏差均值和最大值(ns)

    信號(hào)
    分量
    B1CpB1CdB2apB2ad
    均值最大值均值最大值均值最大值均值最大值
    M10.1013.3810.1173.2770.0242.714–0.0272.576
    M20.0553.6120.0163.390–0.0132.607–0.0332.676
    M30.1923.4120.0122.7730.0313.276–0.0323.092
    M40.0853.5400.0542.9140.0062.301–0.0232.113
    M50.0483.3960.1413.568–0.0012.2820.0532.256
    M60.1073.3590.0452.8050.0322.3300.0582.416
    M70.0183.3990.0553.4920.0122.145–0.0692.116
    M80.0813.2840.0222.9270.0152.939–0.0353.096
    M90.1123.3940.2062.6680.0542.244–0.0082.367
    M100.1013.4350.1672.8010.0622.2460.0132.407
    M110.1643.4150.3003.3380.0612.448–0.0362.274
    M120.0553.5680.1392.5970.0692.467–0.0842.340
    M130.1593.4360.1093.2120.0212.255–0.0482.336
    M140.0183.3330.0112.7460.1282.6630.0412.415
    M150.1883.6720.0493.080–0.0412.7270.0272.795
    M160.0953.3310.0102.702–0.0362.6780.0022.680
    M170.1732.6810.0082.7830.0312.2920.0362.474
    M180.1693.5420.0752.8970.0552.4860.0852.273
    下載: 導(dǎo)出CSV

    表  11  信號(hào)一致性測(cè)試結(jié)果(ns)

    信號(hào)分量B1Cd-B1CpB2ad-B2ap
    均值標(biāo)準(zhǔn)差均值標(biāo)準(zhǔn)差
    M12.26×10–40.0769.9×10–60.013
    M26.90×10–50.0703.70×10–50.012
    M32.03×10–40.0796.74×10–50.015
    M43.14×10–40.0763.65×10–50.016
    M55.40×10–50.0711.43×10–70.014
    M62.09×10–40.0831.25×10–50.013
    M75.30×10–50.0891.82×10–60.013
    M81.16×10–40.0821.62×10–50.014
    M92.60×10–40.0989.06×10–50.013
    M105.20×10–50.0987.99×10–60.013
    M111.30×10–50.0858.59×10–50.013
    M128.20×10–50.0728.64×10–50.015
    M131.15×10–40.0815.67×10–50.012
    M141.37×10–40.0833.77×10–50.013
    M151.98×10–40.0987.98×10–50.018
    M167.70×10–50.0901.77×10–50.014
    M171.93×10–40.0763.67×10–60.013
    M184.08×10–40.0702.44×10–50.012
    下載: 導(dǎo)出CSV
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    中國(guó)衛(wèi)星導(dǎo)航系統(tǒng)管理辦公室. 北斗衛(wèi)星導(dǎo)航系統(tǒng)空間信號(hào)接口控制文件公開(kāi)服務(wù)信號(hào)B2a(1.0版)[EB/OL]. http://www.beidou.gov.cn, 2017.

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    HE Chengyan, GUO Ji, LU Xiaochun, et al. Researches on pseudo-range biases of Beidou navigation satellite system B1 signals[J]. Journal of Electronics &Information Technology, 2018, 40(11): 2698–2704. doi: 10.11999/JEIT180074
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  • 收稿日期:  2019-09-04
  • 修回日期:  2020-03-31
  • 網(wǎng)絡(luò)出版日期:  2020-05-12
  • 刊出日期:  2020-11-16

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