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

Abstract

CLC Number:

TN929

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.

Figures/Tables 19

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

References 11

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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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