NxGen Frequency Agile Signal Simulator

Synergent’s NxGen Frequency Agile Signal Simulator allows users to quickly and easily construct custom radar signals and digital communications signals with synthesizer-based fidelity.  Based on the use of COTS test equipment, NxGen FASS is a software application to support complex microwave signal creation and sequencing. The system can be used to verify the response of receiving systems on the ground and during flight test. The system provides precision modulation and accurate output power. By providing antenna gain and amplifier gain versus frequency, the user can transmit signals with precise effective isotropic radiated power (EIRP) control.

Optional capability is available to simulate dynamic multi-emitter environments.



• Single or multiple signal sources controlled by a single user interface
• Support of standard radar and electronic warfare pulsed signals with linear /non-linear
frequency chirps and phase-coded modulations such as Barker codes
• Pulse amplitude shaping and complex modulation on pulse simulation
• Support of standard analog communication modulation types such as single tone analog
AM/FM/PM and digital communication types including BPSK, QPSK, 8PSK, 16QAM, and
GSM plus captured and imported signals
• IQ bandwidth of 80 MHz expandable up to 1 GHz
• Integrated IQ amplitude and group delay calibration with user specified accuracy limits
and < 0.1 dB amplitude flatness error and < 1 degree phase error
• Import custom files of IQ pairs in MatLab matrix format
• Import a series of pulse descriptors created in Excel to simulate a complex pulse sequence
• Time-driven simulations that can be slaved to GPS synchronization
• Extensive waveform display capability
• Optional signal validation and using Synergent’s Remote Signal Monitoring system


Off-the-shelf Simulation of Advanced Emitters

• Selected by the DoD as the Next Generation FASS
• Test radar warning receivers (RWR), electronic countermeasures (ECM), electronic
support measures (ESM), SIGINT systems, and EW receivers
• Introduce frequency and amplitude changes between signals to verify the performance
of receiving systems on the ground and during flight tests
• Prototype subsystems with a laboratory modulation standard
• Specify EIRP through antennas, non-linear amplifiers, and cabling
• Create and combine interferers and jamming signals
• Develop complex threat libraries and test scenarios