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7/30/2019 FYP Presentation Format 3
1/20
Department o f Electronic Engineering
Design and Implementationof RCIED Jamming System
Muhammad Usman Saleem
09-ECT-28
Hassan Bin Qasim
09-ECT-43
Muhammad Waqas Qadir09-ECT-45
Supervised by:
Engr.Ahmad Umar Niazi
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Department o f Electronic Engineering
Problem Statement
The radio controlled improvised explosive device (RCIED) is one of
the deadliest threats to military personnel supporting the global war
on terrorism and due to its success is expected to play a major role
as a weapon of choice in future insurgencies. To mitigate the risk
of a RCIED attack, electronic jamming devices are utilizedto interrupt the communications between a remote control
and the RCIED trigger.
Design, implementation, and testing of common RCIED Frequency
Bands ,RCIED four-band jammer. This jammer works at CDMA870-
880, GSM930-960, DCS1805-1850 and 3G 2110-2170 MHz
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Aims & Objectives
Proactive communication signal jamming between receiver and
transmitter using denial of services
Our proposed frequency band was 25-3000Mhz,due to inavailability
of wide band VCO ,We have been limited to some common IED
frequency bands GSM,CDMA,DCS and 3G This jammer works at CDMA870-880, GSM930-960; DCS1805-
1850, 3G 2110-2170 MHz
Jamming Radius about 2- 20 m
Department o f Electronic Engineering
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Literature Review
RCIED jamming devices were first developed and used by military.
This interest Comes from the fundamental objective of denying the
successful transport of information from the sender (tactical
commanders) to the receiver (the army personnel), and vice-versa
The use of the IED has grown to unmatched numbers in use againstmilitary forces, religious places and public gathering. We know there
are lot of IEDs blasts in Karachi, Quetta and Peshawar which effects
the general public, VIP convey and military personal
The device IED is constructed so that the receiver is connected to
an electrical firing circuit. The transmitted signal causes the receiverto initiate the IED. Usually the receiver triggers the initiator, but it
may also be used to remotely arm the device to be initiated by other
means.
Department o f Electronic Engineering
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Literature Review
The open nature of wireless radio transmissions makes them
particularly vulnerable to communication jamming Denial-of-Service
(DOS) attacks (the technique we used).
The aim of these devices is to prevent devices from exchanging any
useful information by interfering with their communication. Possiblecommunication jamming attacks include signal annihilation,
modification and jamming as well as the insertion of forged or
replayed signals.
The trigger of an RCIED is a radio transmitter and receiver link. A
few examples are car alarms, wireless door bells, cell phones,pagers and walkie-talkies.
Department o f Electronic Engineering
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Literature Review
DOS. In this technique, the device transmits a noise signal at the
same operating frequency of the mobile phone in order to decrease
the signal-to-noise ratio (SNR) of the communication device (GSM)
under its minimum value.[2]
Swept Spectrum Jamming in which the carrier frequency is notnoise modulated but swept over the frequency ranges.[1]
If uplink processing at the base station can be grounded on the
availability of direct information about the concerned uplink channel
(by the mean of a training sequence or blind methods), downlink
processing encounters more severe difficulties: no information aboutthe downlink channel is available at the base station prior to data
transmission so we usually jam the downlink frequencies one can
also elaborate it as less power needed for jamming downlink.
Department o f Electronic Engineering
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ANALYSIS
Department o f Electronic Engineering
Uplink Downlink
GSM 890-915MHZ 935-960MHZ
Uplink Downlink
DCS 1850-1910MHZ 1930-1990MHZ
Uplink Downlink
CDMA 824-849MHZ 869-894MHZ
Uplink Downlink
3G 1980-2010MHZ 2170-2200MHZ
GSM,DCS,CDMA and 3G Frequency bands
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ANALYSIS
In our project, we need to get the duty cycle (D.C.)
equal to 50% which means the time needed for charging
equals the discharging time. This can be done by using
Ra=Rb
Sweep rate will be 4.8 KHz. Ra=Rb=1K Ohm and C=0.101 F
Department o f Electronic Engineering
7/30/2019 FYP Presentation Format 3
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ANALYSIS
There is no single wideband VCO which will cover our desired
frequency band so we used two VCOs one for GSM, DCS and
CDMA with frequency Range 800-2000 MHz model number
0897/1747 RY57 with 7.5 dbm manufactured by Fujitsu and for 3G
we used 2074S6 with output 3dbm manufactured by Delta Most cellular devices have a SNR handling capability of around
12dB. A very good device might have a value of 9dB, although it is
highly unlikely. To ensure jamming of these devices, we need to
reduce the SNR of the carrier signal to below the 9dB level.
J = -24dBm (Power of the jamming signal) Since SNRmin = S/JLp=32.45+20 log (f*D)
Jt=58-24=34 dbm
Department o f Electronic Engineering
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ANALYSIS
Output power of our VCOs is 7.5+3 dbm which needs to be
amplified upto 37 dbm to meet required signal. The power output of
the amplifier is 36 dbm hence it fulfills the requirement of generated
signal. [2]
Output power of power amplifier = 5wattPout = 10 log 5
Pout = 6.98 db
Pout in dbm = 6.98+30 = 37 dbm
The received signal level for the desired signal is
S=ERPs-32-20 log (F)-20 log (ds)+Grs
Department o f Electronic Engineering
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ANALYSIS
The jamming to signal ratio (J/S) is the difference between these two
numbers (JS) in dB [3]
J/S=ERPj-ERPs-20 log (dj)+20 log (ds)+Grj-Grs
Comparison between distance and attenuation
Department o f Electronic Engineering
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ANALYSIS
Cost
We have chosen ICs on the basis of same supply voltage, surface
mount which will reduce size and more powerful and having same
noise properties
Hitachi Power Amplifier IC PF0114B 5,500 Rs
VCO IC 0897/1747 RY57 3500 Rs
VCO IC 2074S6 Delta 1500 Rs
Mosfet Tni 112E 150 Rs
555 Timer 10 RsZener Diode 25 Rs
VCO Evaluation PCBs 10,000 Rs
Copper PCB 250 Rs
Department o f Electronic Engineering
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IMPLEMENTATION
System Diagram Simulation in AWR 2000
Department o f Electronic Engineering
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IMPLEMENTATION
Phase one: studying the RCIED jamming to find the best jamming
technique (spoofing, shielding, dos, spectrum distortion),
establishing the system design and selecting suitable components.
Phase two: buying all the needed components, drawing the overall
schematics, fabricating the PCB layout, assembling the devices,performing some measurements and finally testing the jammer.
Department of Electrical Engineering
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IMPLEMENTATION
Circuit Diagram on Proteus 8.0 PCB Layout on Proteus 8.0
Department o f Electronic Engineering
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IMPLEMENTATION
Department of Electrical Engineering
Jamming System in working
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RESULTS
According to required task we have jammed the 4-bands GSM,
DCS, CDMA, and 3G. GSM and DCS signals are tested on mobile
phones, CDMA is tested on spectrum analyzer and 3G is checked in
3G EVO with range 2-25meter
Department o f Electronic Engineering
Before GSM Jamming After GSM Jamming
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CONCLUSION
This project includes effective multichannel jamming for GSM, DCS,
CDMA and 3G bands. Which are major cause of IED attacks as per
according to survey, its algorithm is satisfactory in prevention from
RCIED attacks .We used denial of services instead of other
techniques as its more reliable, prevents from complexity and itscheap to implement in blocking the prescribed bands .
In future we can improve the jamming system output power, range
of jamming signal .We can jam more common IED bands 25Mhz to
3Ghz in multi channel design which will be reliable and effective .
Department o f Electronic Engineering
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Utilization of Research Results
The radio controlled improvised explosive device (RCIED) is one of
the deadliest threats to military personnel supporting the global war
on terrorism and due to its success is expected to play a major role
as a weapon of choice in future insurgencies. To mitigate the risk
of a RCIED attack, electronic jamming devices are utilizedto interrupt the communications between a remote control
and the RCIED trigger
VIP Convoy protection
Military application
Department o f Electronic Engineering
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References
[1] Homeland Security Strategies GB, Homeland security
homepage available on-line at http://www.bombjammer.com, 2010
[2] Richard A Poisel, Introduction to Communication Electronic
Warfare Systems, Artech House,Boston,London 2002,ISBN-13:
978-1-59693-452-8. [3] David L. Adamy ,Introduction to Electronic Warfare, Modeling
and Simulation, Artech House ,Boston ,London, 2002, ISBN1-
58053-495-3.
Department o f Electronic Engineering
http://www.bombjammer.com/http://www.bombjammer.com/