地球站间干扰保护距离的研究——卫星固定业务地球站对近地空间研究业务地球站的干扰保护距离

doi:10.3969/j.issn.1000-0801.2014.06.013

Abstract

Abstract:

Fixed-satellite service earth stations and space research service earth stations parameters in the 8 400～8 500 MHz band were introduced.Then the interference from fixed-satellite earth stations to space research earth stations was examined and the required separation distances for protection of space research earth stations were calculated.For the protection of space research earth stations,both the non-geostationary-satellite and geostationary-satellite systems using maximum equivalent isotropically radiated power spectral density values allowed per“Radio Regulations”were covered.The result shows that required separation distances in the range from 542 km to 582 km around near-earth space research service earth stations would need to be established in order to meet the protection criteria of the near-earth space research earth station.

Key words: compatibility calculation, fixed-satellite earth station, space research service earth station, interference, protection distance

Jianxin Li,Wenhan Yang. Research on Protection Distances for Interference Between Earth Stations——Protection Distances for Interference from Fixed-SateIIite Earth Stations to Space Research Earth Stations[J]. Telecommunications Science, 2014, 30(6): 86-89.

参数	数值
频段f/MHz	8 450～8 500
天线最小仰角θ_t	10°
天线直径D/m	1.5
天线高度h/m	15
天线增益G_T	Rec.ITU-R S.580-6[4]
天线峰值增益G_0t/dB	40
地势仰角ε_t	变量
离轴角γ_t	变量
对向近地SRS地球站的天线增益G_t/dB	G_t=G_T（γ_t）
在γ_t=10°时的天线增益/dB	4
轴向的最大等效全向辐射功率（e.i.r.p.）密度P_0t/（dBW·Hz^-1）	10
《无线电规则》第21.8条规定的最大发射功率谱密度P_T/（dBW·Hz^-1）	0
水平方向最大e.i.r.p.P_t/（dBW·Hz^-1）	P_t=P_T+G_t=-30+G_t
在γ_t=10°时的P_t/（dBW·Hz^-1）	-26

参数	备注
频段f	FSS新划分的频段
天线最小仰角θ_t	对于 NGSO FSS地球站，假设其指向近地SRS地球站；对于 GSO FSS系统，近地SRS地球站方向角与指向GSO 卫星的FSS 地球站的隔离角度可依据《无线电规则》附录7附件5的规定
天线直径D
天线高度h	假设其建设在塔上
天线增益G_T
天线峰值增益G_0t
地势仰角ε_t	随着方位角而变化
离轴角γ_t	依赖于参照近地SRS地球站时FSS地球站天线指向和水平方向。对于NGSO FSS 地球站，γ_t= θ_t-ε_t；对于GSO FSS 系统，近地SRS地球站方向角与指向GSO 卫星的 FSS 地球站的隔离角度可依据《无线电规则》附录7附件5的规定
对向近地 SRS 地球站的天线增益G_t	依赖离轴角而变化
在 γ_t=10_°时的天线增益	使用旁瓣增益：29-25log10
轴向的最大e.i.r.p.P_0t
《无线电规则》第21.8条规定的最大发射功率密度P_T	P_T=4 dBW/Hz-4 dB（《无线电规则》第21.8条规定的水平方向的最大e.i.r.p.为40+3θ（dBW/4 kHz）,0＜θ＜5_°，在水平0_°角为40 dBW/4 kHz或者4 dBW/Hz）
水平方向最大e.i.r.p.P_t	依赖 G_t而变化
在γ_t=10_°时的P_t	对于 NGSO FSS地球站

参数	数值
频段f/MHz	8 475
近地SRS地球站天线最小工作仰角θ_r	5_°
天线直径D/m	65
天线高度h/m	35
在FSS 地球站方向上的近地SRS地球站天线增益G_r/dBi	14.53
允许的干扰电平P_0r/（dBW·Hz^-1）	-216
允许超过的统计百分比p	0.1%

参数	备注
频段f	考虑到接收频率位于8 450～8 500 MHz的中心频点
近地SRS地球站天线最小工作仰角θ_r	假设近地SRS地球站指向FSS地球站
天线直径D
天线高度h	天线直径中心到地面的高度
在FSS 地球站方向上的近地SRS地球站天线增益G_r	根据《无线电规则》附录8～10附件3评估的5°仰角
允许的干扰电平P_0r	近地SRS保护（Rec.ITU-R SA.609）
允许超过的统计百分比p	对于水平方向干扰源（Rec.ITU-R SA.609）

近地SRS地球站	折射因子?N	平面折射系数N₀
中国SHAI地球站	45	350

Research on Protection Distances for Interference Between Earth Stations——Protection Distances for Interference from Fixed-SateIIite Earth Stations to Space Research Earth Stations

RichHTML

PDF下载

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 10

References 4

Related Articles 15

Metrics

Recommended 0

8400～8450MHz频段近地 SRS地球站	依据《无线电规则》第21.8条规定的最大e.i.r.p.
8400～8450MHz频段近地 SRS地球站	NGSO FSS/km	GSO FSS/km
中国SHAI地球站	582	542

1	ITU-R SA.609-2建议书. 有人和无人操纵的近地科学卫星的无线电通信链路的保护准则（第二版）. ， 2014
2	ITU-R P.452-14建议书. 评估在频率高于约0.1GHz 时地球表面上电台之间干扰的预测程序（第十四版）. ， 2014
3	国际电信联盟. 无线电规则， 2012
4	ITU-R S.580-6建议书. 与静止卫星通信的地球站天线方向性图的设计（第六版）. ， 2014

[1]	Dandan DONG, Ning SUN. Interference coupling cooperative suppression method for wideband carrier communication based on improved variational mode decomposition [J]. Telecommunications Science, 2023, 39(5): 129-135.
[2]	Xiaoyun WANG, Wei DENG, Long ZHANG, Qi SUN. Research on multi-domain collaboration based method of TDD large-scale networking [J]. Telecommunications Science, 2023, 39(4): 43-51.
[3]	Lunlong ZHONG, Jiongpo LIU, Yongyu LIU. Induced spoofing detection method based on error valuation accumulation open-loop correction [J]. Telecommunications Science, 2022, 38(9): 116-128.
[4]	Yejiang ZHANG, Lei SUN, Yiyan YIN, Xiaokang YANG, Jian HU. Research on the application of 700 MHz frequency band in 5G network optimization [J]. Telecommunications Science, 2022, 38(6): 156-163.
[5]	Yujie LI. Research on remote interference analysis and solution for 5G [J]. Telecommunications Science, 2022, 38(6): 164-171.
[6]	Feng BI. Research on the enhancement technology based on the 5G wireless access and wireless backhaul integration [J]. Telecommunications Science, 2022, 38(5): 173-178.
[7]	Tinglan WANG, Xingzheng LI, Yimin ZUO, Dongchen ZHANG. Analysis and avoidance method of 5G atmospheric duct interference [J]. Telecommunications Science, 2022, 38(4): 130-137.
[8]	Ying HUANG, Wei LI, Chen JIAN, Kang YAN. Research on power flux-density at the earth’s surface produced by emissions from the steerable beam of LEO constellation system [J]. Telecommunications Science, 2022, 38(4): 49-58.
[9]	Xirui GUO, Tao ZHANG, Qiang ZHANG, Dongyang WANG, Yan YANG. A solution for 5G indoor and outdoor co-frequency network interference [J]. Telecommunications Science, 2022, 38(2): 139-148.
[10]	Xiaoyun WANG, Wei DENG, Long ZHANG, Xin SU, Shizhuo ZHAO. Research on characteristic model-based atmospheric duct interference control in TDD wireless communication system [J]. Telecommunications Science, 2022, 38(11): 11-23.
[11]	Peijin LYU, Yun LU, Xiaokang YANG, Dan YANG, Yiyan YIN, Zhengyi GUO. Research on broadcast and TV system interference of 700 MHz band in 5G network [J]. Telecommunications Science, 2022, 38(11): 106-112.
[12]	Jian MA, Guangjin ZHANG, Lei ZHANG, Jingwei DAI. Improved ResNet algorithm based intelligent interference identification [J]. Telecommunications Science, 2022, 38(10): 98-106.
[13]	Xingang SONG, Xingzheng LI, Zhimin ZHAO, Yan WANG. Analysis and testing on the interference due to atmospheric duct of 5G [J]. Telecommunications Science, 2022, 38(1): 112-120.
[14]	Xin SU, Sen WANG, Hongwen YANG, Jing JIN, Qixing WANG. Faster-than-Nyquist signaling: value and challenges of 6G-oriented applications [J]. Telecommunications Science, 2021, 37(9): 38-47.
[15]	Jianming YAO. Study on interference problems between 5G base stations and adjacent frequency systems [J]. Telecommunications Science, 2021, 37(11): 152-158.