Jamming of radar guided missile receivers are extremely
difficult as the frequency lock and the servo lock requires no
deviations in the repeater waveform of the jammer and its
frequency. Broadband repeat jamming of such missile radar
receiver is illustrated in this paper for effective deception in the
presence of FM CW (Continuous Wave) interference signal. The
modulation index of the FM jammer required for breaking the
frequency lock of the monopulse receiver is determined and its
variation with radar echo signal amplitude is presented. It is
shown that modulation index required for jamming the receiver
increases with increase in amplitude of the received radar echo.
It is also verified that for particular radar echo amplitude, less
modulation index is required for jamming the receiver when the
modulating voltage in the FM jammer is maintained at large
value. It is seen that break-lock in the receiver occurs when the
FM modulation index is 8.75x103 or more for typical radar
echo amplitude of 1 volt and FM modulating voltage of 5 mV
and frequency of 0.2 MHz. The effectiveness of the jamming is
estimated through computer simulation using Visual System
Simulator.
Published In : IJCSN Journal Volume 2, Issue 5
Date of Publication : 01 October 2013
Pages : 33 - 36
Figures : 04
Tables : --
Publication Link : ijcsn.org/IJCSN-2013/2-5/IJCSN-2013-2-5-40.pdf
HariKrishna Paik : was born on 27 July 1975.
He obtained B.E from REC, Rourkela,
M.Tech from JNTU and pursuing Ph.D
(Microwave & Radar) at the same University.
He joined as a lecturer in the Dept. of EIE V
R Siddhartha Engg College, Vijayawada,
Andhra Pradesh in 2000. He is at present
working as Assoc.Professor in the same
Dept..His area of interest are Microwave and
Radar, Signal processing.
Dr.N.N.Sastry : was born in Chirala, Andhra
Pradesh, 15th September, 1945. He
obtained B.Sc degree from Osmania
University, B.E from IISC, M.Tech from
JNTU and Ph.D from OU. He joined Def.
Ele.Res.Lab. in 1968 and become scientist
‘G’ and assoc. director in 1997. He handled
a major Army Project SAMYUKTA as
Assoc. program Director for 8 years. He
reteired from Govt. service in 2005 and
joined as Professor and become Dean and Research Director in K L
College of Engg.AP. He is at present Professor & HEAD R&D Wing
at V R Siddhartha Engg College, Vijayawada. His area of work has
been in microwave antennas, Txs, Rxs and EW systems. He
published many papers and made over 100 reports. He is also a
member of IEEE society.
Dr. I. SantiPrabha : is a Professor in ECE
department and Director of Empowerment of
Women & Grievances in J N T University.
She did her B. Tech in Electronics &
Communication Engg from JNT College of
Engg, Kakinada and Master’s degree in
Instrumentation & Control and Doctoral
degree in the field of Speech Signal
processing from the same institution. She
has more than 25 years of experience in
teaching. She is a member of ISTE, IETE
and Fellow member in Institute of Engineers.
[1] Merril Ivan Scholnik, Radar Handbook, Third Edition,
McGraw-Hill Companies, 2008.
[2] Jia Zongsheng, Si Xicai, “Analysis on the Tracking
Performance of Active Radar Seeker under the Condition
of Coherent Interference,” IEEE Transactions, 2009, pp.
418-422.
[3] E. Chaumette and P. Larzabal, “Statistical prediction of
monopulse angle Measurement,” IET Radar Sonar
Navig., 2007, 1, pp. 377–387.
[4] ARNOLD D. SEIFER, Raytheon, Monopulse-Radar
Angle Tracking in Noise or Noise Jamming, IEEE, 1992,
pp.622-638.
[5] JU Zhiqin, DONG Shengbo, CHANG Xiaolan, “Analysis
on Anti jamming Capability of Radar Seeker under Non-
SSJ”, Journal of Astronautic Metrology and
Measurement, 2003, Vol,23, No.3, pp.6-11.
[6] Merrill I. Skolnik, “Introduction to Radar Systems”,
Third Edition, Tata Mc Graw-Hill, USA, 2001.
[7] Samuel M Sherman, “Monopulse Principles and
Techniques,” Artech House, 2nd Edition, 1984.
[8] Keese, William O. “An Analysis and Performance
Evaluation of a Passive Filter Design Technique for
Charge Pump Phased Locked Loops,” Application Note
2001, National Semiconductor.
