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GPS Jamming and Spoofing:
Protect Your PNT Systems from Emerging Threats
GPS jamming and spoofing attacks are rising, with accessible SDRs making these threats more prevalent than ever. Protecting your PNT systems requires proactive testing against real-world interference.
BroadSim: The Ultimate GNSS Jamming & Spoofing Simulator
BroadSim is transforming GNSS testing by allowing simultaneous generation of jamming and GNSS signals— all within a single system, making easier than ever to replicate complex real-world environments. With BroadSim, generate high-fidelity interference signals across multiple types, including jamming, spoofing, repeating, and meaconing. Featuring intuitive Skydel software control and 4 RF outputs, BroadSim supports multiple simultaneous constellations.
Traditional Jamming Testing: Challenges & Limitations
Users required to attach a separate signal generator for each interference waveform to be generated
The number of interference sources is limited to the number of signal generators available
Signal generators would need to be integrated into software or be operated real-time by an engineer
Jamming power levels were determined based on what signal level was to be received at the receiver front end independent of the location of the simulated jammer or transmit power
Revolutionizing Jamming Testing with BroadSim
Unlimited number of interference signals can be generated with 1 RF output
Each interference signal within 1 RF output can have different power levels, modulations, and locations
Jamming can be turned on and off through the SDX GUI and API
Users can specify the location and power of jamming transmitters and BroadSim will calculate the received power at the receiver based on the location to the transmitted and user-selected loss model
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Enables users to create real-world threat laydowns to better support the warfighter.
Jamming Scenario
Our team developed a plugin to showcase BroadSim’s hardware-in-the-loop (HILT) and advanced jamming capabilities via the Kerbal Space Program (KSP) computer game.
BroadSim generates and transmits the corresponding RF signals to a GNSS receiver and a spectrum analyzer, whose data is collected and plotted on the same screen.
6 red spheres appear in the flight space, each representing a jammer with a unique frequency, power level, and modulation. The aircraft nears a jammer made up of CW tones offset by 1MHz with varying power levels.
The aircraft in the video is controlled through a joystick. The path of the actual flight is shown by the red trail. As the airplane is maneuvered, its real
-time location is sent to BroadSim.
The reported location of the receiver is shown by the green trace and the spectrum from the spectrum analyzer is shown in the lower right-hand corner (center at GPS L1).
When the aircraft flies directly through the jammer, the receiver is jammed to the point that it cannot track the GNSS signals and begins to drift in a straight line away from the jamming source.
Simultaneous simulation of GNSS signals across multiple constellations can be achieved leveraging the Skydel Simulation Engine, including advanced jamming and spoofing.​
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