Page 51 - MWJC_MarApr2019_eMag

TechnicalFeature 技术特写

Jammer

Victim Radar Target
(a)
Denial Jamming
1k

750
RF Sweep (MHz) 500 –10 0 Real Target Denial Jamming
Jammer
250
Victim Radar Tx
Real Target Return –20
Jammer
0 10 20 30 40 50 –30
Sweep Time (s) Normalized IF Level (dB) –40
100
90 –50
80 –60
IF Signal (MHz) 60 –70
70
50
40
30
20 –80 0 50 100 150 200 250
10 IF Signal (MHz)
0 10 20 30 40 50
Sweep Time (s)
(b)
Deceptive Jamming
750 Deceptive Jamming
RF Sweep (MHz) 500 –10 0 Target False Target

Real
250
Victim Radar Tx
Real Target Return –20
Jammer –30
0 10 20 30 40 50
Sweep Time (s) Normalized IF Level (dB) –40
100 –50
90
80 –60
IF Signal (MHz) 60 –70
70
50
40
–80
30
20 0 50 100 150 200 250
IF Signal (MHz)
10
0 20 40 60 80 100
(c) Sweep Time (s)
图2：驾驶场景(a)中FMCW雷达的拒绝式干扰(b)和欺骗式干扰(c)。

48 www.mwjournalchina.com Microwave Journal China 微波杂志 Mar/Apr 2019