TD-LTE下行信号对S波段脉冲雷达引信系统的干扰分析

doi:10.11959/j.issn.1000-0801.2018002

电信科学 ›› 2018, Vol. 34 ›› Issue (2): 23-31.doi: 10.11959/j.issn.1000-0801.2018002

TD-LTE下行信号对S波段脉冲雷达引信系统的干扰分析

王鹏飞,郑健

西安高新技术研究所，陕西西安 710025

修回日期:2017-09-18 出版日期:2018-02-01 发布日期:2018-02-13
作者简介:王鹏飞（1985-），男，西安高新技术研究所硕士生，主要研究方向为信息与通信工程。|郑健（1957-），男，西安高新技术研究所教授，主要研究方向为信息与通信工程。

Interference analysis of TD-LTE downlink signal on S-band pulse radar fuse Abstract:Concerning that the TD-LTE downlink signal and pulse radar fuze signal may be interfered within 2 300 to 2 400 MHz band of S-band,the method of calculating the signal-to-interference ratio at the pulse radar fuse receiver was used.And the isolation distance that the TD-LTE downlink signal did not interfere the pulse radar fuze signal under the condition of other factors determined was obtained.The validity of the conclusion through the link level simulation was verified.At the same time,it was also obtained when the horizontal distance between the two was isolated distance,the transmission power of the base station was increased (or the fuze transmission power was reduced),the ground effective reflection area was reduced,the fuse will also be interfered by TD-LTE downlink signal.

Pengfei WANG,Jian ZHENG

Xi’an Research Institute of High Technology,Xi’an 710025,China

Revised:2017-09-18 Online:2018-02-01 Published:2018-02-13

摘要/Abstract

摘要：

针对TD-LTE下行信号与脉冲雷达引信信号可能在S波段2 300～2 400 MHz频段内产生干扰的问题，运用计算脉冲雷达引信接收机处信干比的方法，得出在其他因素确定的情况下，TD-LTE下行信号对脉冲雷达引信不产生干扰的隔离距离。并通过链路级仿真的办法验证了结论的正确性，同时还得出当两者之间的水平距离为隔离距离时，增大基站的发射功率（或者减小引信发射功率）、减小地面有效反射面积，引信同样会受到TD-LTE下行信号干扰的结论。

关键词: TD-LTE, 雷达引信, 干扰分析, 功率比较

Key words: TD-LTE, radar fuse, interference analysis, power comparison

中图分类号:

TN929

王鹏飞,郑健. TD-LTE下行信号对S波段脉冲雷达引信系统的干扰分析[J]. 电信科学, 2018, 34(2): 23-31.

Pengfei WANG,Jian ZHENG. Interference analysis of TD-LTE downlink signal on S-band pulse radar fuse Abstract:Concerning that the TD-LTE downlink signal and pulse radar fuze signal may be interfered within 2 300 to 2 400 MHz band of S-band,the method of calculating the signal-to-interference ratio at the pulse radar fuse receiver was used.And the isolation distance that the TD-LTE downlink signal did not interfere the pulse radar fuze signal under the condition of other factors determined was obtained.The validity of the conclusion through the link level simulation was verified.At the same time,it was also obtained when the horizontal distance between the two was isolated distance,the transmission power of the base station was increased (or the fuze transmission power was reduced),the ground effective reflection area was reduced,the fuse will also be interfered by TD-LTE downlink signal.[J]. Telecommunications Science, 2018, 34(2): 23-31.

图/表 19

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表2

表3

干扰判断相关参数设置"

参数名称	参数设置	参数名称	参数设置
TD-LTE、引信工作频率/MHz	2 350	G_r2/dBi	25
H_Tx/m	50	G_a	0.8
h ^*/m	1 000	γ_p	$\frac{2}{3}$
Diff_loss/dB	2.1	F_n/dB	3
f_c/dB	3	τ/μs	0.56
D/m	0～1 000	θ	50°
P_t1/W	60	φ	15°
P_t2/W	700	a₁	5°
G_t1/dBi	18	a₂	4°
G_t2/dBi	25	Δf ₂/MHz	20

表3

图9

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测试场景	城市
基站发射频率/MHz	2 350
基站发射功率/dBm	49
系统带宽/MHz	20
发射天线/dBi	18
发射天线高度/m	50
接收天线高度/m	1.6
接收机频率/MHz	2 350
接收机采样率/ms	10
接收机底噪/dBm	-120
测量范围/km	0.1～2
建筑物高度/m	20～40
测量路径	与基站之间不存在直射波
建筑种类	学校、居民楼
阴影环境	树木、高楼

SPM模型参数	频率2 350 MHz
K₁	23.5
K₂	32.8
K₃	5.26
K₄	0.38
K₅	-8.55
K₆	0
K_c	1

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TD-LTE下行信号对S波段脉冲雷达引信系统的干扰分析

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