GPS L1 band Interference Suppression Unit (CISU)

Commercial Interference Suppression Unit (CISU)
GPS L1 band Interference Suppression Unit
(CISU)
GPS L1 band CISU(Commercial Interference Suppression Unit) is an
anti-jamming device installed between antenna and GPS L1 C/A
code receiver system, simply reinforcing the anti-jamming function
of the existing GPS receiver system. The CISU provides optimum
anti-jamming performance via eliminating several narrow bands
interference signal within the GPS band simultaneously with
minimum GPS signal loss. The CISU has a high reliability based on
verified anti-jamming technology which went through testing
evaluations & applications in various conditions.GPS L1 band
CISU(Commercial Interference Suppression Unit) is an anti-jamming
device installed between antenna and GPS L1 C/A code receiver
system, simply reinforcing the anti-jamming function of the existing
GPS receiver system. The CISU provides optimum anti-jamming
performance via eliminating several narrow bands interference
signal within the GPS band simultaneously with minimum GPS
signal loss. The CISU has a high reliability based on verified antijamming technology which went through testing evaluations &
applications in various conditions.
Features
·Compact, light weight, cost effective
but efficient anti-jamming solution
·High-performance anti-jamming capability
against CW/AM/FM/Swept/Pulsed jammers and AWGN
·Applicable to all military/commercial
such as ground vehicles, UAV, vessels, etc.
·Perfect compatibility with existing GPS receivers
·Automated control & operations through
serial USB for signal interference monitoring & removal.
·Reinforced anti-jamming ability to above 30dB
·GPS L1 band frequency protection
(other bands optional)
Specifications
Anti-jamming Performance
·Anti-jamming Capability : above
30dB
·Frequency : 1575.42 MHz
·Bandwidth : 2 MHz
·VSWR : < 2.0
·Noise index : < 3 dB
·Gain : 20 dB(for passive antenna)
·Interface : USB
Physical/Electrical Specs
·Size : 96 x 143 x 50mm
·Weight : 500g
·Supply Voltage : 15~24V
·Power Consumption : 5W
Environmental Standards
·Temperature : -40℃~+75℃
·EMI/EMC : MIL-STD-461E
Anti-jamming Technology
GPS L1 band Interference Suppression Unit
(CISU)
Anti-jamming Algorithm
·Frequency Domain Processing - OFFT(Overlapped FFT)
·Real-time Processing
·Interference Cancellation Method
GNSS Signal
+Interference
+Noise
Windowing
N-Point
FFT
Interference
Suppression
N-Point
IFFT
GNSS Signal
+Noise
N/2
Delay
Windowing
N-Point
FFT
Interference
Suppression
N-Point
IFFT
Test Results
Noise signal Intensity
Jamming signal
Eliminate Jamming signal
2 CWs
Avg. Signal vs. Noise ratio (CISU applied)
Aver. Signal vs. Noise ratio (CISU non-applied)
Reinforced
anti-jamming Capability to
Above 30dB
Jamming Size (dBm)
Navcours Co., Ltd. 713 Gwanpyeong-dong Yuseong-gu, Daejeon, Rep. of Korea 305-509
Contact : (tel.) +82-42-363-9000 (fax.) +82-42-363-9001 (Web) www.navcours.com