Dynamic Spectrum Environment Emulator (DYSE)

The Dynamic Spectrum Environment Emulator is a test asset that seeks to emulate realistic RF environments, including congested and contested conditions. RF paths can be individually programmable, and emulate the impact of real-world operational conditions, in the safety and convenience of a lab environment. DYSE supports the full RF Systems Development Life Cycle from Modeling and Simulation to Testing and Evaluation.

RF Test And Simulation Systems

DYSE Interface
  • Emulate Realistic RF Environments/Channel Emulator
  • Modeling & Simulation (M&S) and Hardware-in-the-loop (HiTL) Testing & Evaluation (T&E)
  • RF Digital Twin performance testing
  • RF Virtual Reality creation. Dynamically emulates realistic RF environments, including congested and contested conditions
  • High-Fidelity, repeatable RF systems testing in the lab with real-world field quality characteristics
  • Development and testing asset optimized for modern RF technology like SDRs
  • Scalable to support user capacity needs, small to massive RF scenarios
  • Supports accelerated RF development and time-to-field
  • Supports Virtual Nodes (VSUs: virtual models of systems) and/or Physical Nodes (PSUs: Real systems that can be connected to DYSE for test and simulation purposes)
  • Tested for 5G, Spectrum sharing, Resilient PNT, Cognitive Radio, Tactical and LPI/LPD communications systems, EW systems, and more

How It Works

  • RF devices under test interconnect through synthetically generated RF environments
  • RF paths between devices emulate the impact of real-world RF operational conditions – paths are individually programmable
  • Physical devices can interact with virtual devices – full-mesh interconnection
  • Device interactions take place through the DYSE Virtual RF Environment (VRE) at digital baseband 
  • Hardware-in-the-Loop (HiTL) interfaces provide analog RF connections for physical devices
Emulate Realistic RF Environments

Modeling And Simulation With DYSE


DYSE can be used to develop and refine RF designs, concepts, applications, and algorithms. When performing Modeling and Simulation, DYSE passes data produced by RF device models through mathematical and statistical channel models to predict performance under user-selected RF operating environments.

DYSE emulates operationally realistic operating environments so users can validate concepts, refine capabilities, and assess performance through Modeling & Simulation before proceeding to  physical device Test & Evaluation and/or field testing.

Following M&S Assessment, Developers Can Instantiate Pre-prototype Physical Systems on the Parsons WISP Systems.

Testing And Evaluation With DYSE

DYSE is available in configurations to test and assess physical RF devices and systems in user-controlled emulated RF environments. With both M&S and T&E testing capability, DYSE provides a versatile platform for accelerating RF systems development and time-to-field while decreasing risk.

Key Characteristics

  • Tuning range up to 20 GHz
  • IBW >1 GHz
  • Path delay >1 sec
  • Up to 1024 RF paths
  • Full-mesh interconnection
  • Physical RF devices can interact with virtual/software-modeled RF devices
  • Digital electromagnetic wave emulation
  • High-fidelity propagation models
  • Flexible, customizable test scenarios
  • Host platform & antenna options
  • 6-DOF motion, trajectories
  • Extensive library of virtual/software-modeled RF devices
  • APIs simplify user control
  • Dynamic path effects

DYSE Desktop (Coming Soon)

Desktop Dyse Icon
DYSE Desktop

Modeling And Simulation Anywhere

  • Runs on a laptop or desktop. No external hardware required
  • Path modeling performed on CPU
  • Executes simulation scenarios in non-real time 
  • Supports virtual nodes
  • Bandwidth and node capacities vary according to the host computer’s available memory 

DYSE Agile

DYSE Agile

Modeling And Simulation And Limited Testing And Evaluation

  • Can test virtual and physical nodes
  • Greater processing power enables higher virtual node counts than DYSE Desktop
  • Path modeling performed on a single GPU
  • Can include a Hardware in the Loop (HiTL) RF interface for testing up to 8 physical nodes ​
  • Executes scenarios in real time and non-real time. Non-real time can be faster or slower than real time depending on scenario complexity
  • Real time mode per-channel IBW up to 25 MHz
  • Tuning range 10Mhz – 6GHz

DYSE Cyber

High Capacity Modeling And Simulation

DYSE Matrix 24 x 24
24×24 DYSE Connect system, depicted in photo
  • Very high capacity – can operate with hundreds of nodes and GHz of IBW per-channel
  • Supports M&S for virtual nodes (no physical node T&E)
  • Non-Real Time scenarios may execute faster than real time due to very high processing power
  • Distributes path modeling over multiple GPUs
  • Premises-based systems available now. 
  • Cloud-based coming soon

DYSE Connect

Lab Based Testing And Evaluation

  • Focus on physical node testing/evaluation
  • Can also support virtual node testing
  • HiTL interface for connection to physical RF devices/systems
  • Executes scenarios in real time
  • Supports any mix of physical and virtual RF devices
  • Tuning range up to 20GHz
  • Per-channel IBW scalable to 1 GHz and higher
  • Can scale up to 32×32 matrix, 1024 paths, with full-mesh interconnection

Dyse Chart
Emulate Realistic RF Environments

Users can create test scenarios consisting of physical and virtual nodes. Any and all nodes can be “placed” on terrestrial, airborne, or space platforms with associated antenna patterns and 6 DOF motion. DYSE models the RF propagation paths between nodes, introducing a wide range of operationally correct propagation effects.

  • Path Loss
  • Fading
  • Multipath
  • Shadowing
  • Propagation Delay
  • Doppler
  • Nuclear Scintillation


  • Full-mesh node interconnection
  • Independent RF parameters each path
  • Dynamic path modeling 
  • IBW per-channel >1GHz
  • Tuning range 10 MHz to 20 GHz 
  • Propagation Delay >1 sec 

Diverse Use Cases

  • 5G, MIMO, LTE, Cognitive Radio
  • RADAR (including frequency-hopping), Jamming, Electronic Warfare
  • Assured PNT
  • Spectrum sharing, Dynamic spectrum access
  • Mesh Networks
  • Tactical communications systems
  • LPI/LPD communications

Cross-Discipline Application:

  • DoD Labs
  • Academic
  • Defense contractors

*Parsons complies with all applicable Trade Compliance regulations. Some of Parsons products may require an authorization from the U.S. Government before they are exported.

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