Navigation and timing signals have become part of the invisible infrastructure behind aviation, maritime movement, communications, and autonomous systems. That infrastructure is increasingly exposed to interference.
Recent open-source assessments describe global navigation satellite system interference as a persistent feature of several conflict regions rather than an occasional anomaly. The operational lesson extends beyond any one theater: teams developing or evaluating RF-dependent systems need evidence of how those systems behave when the signal environment becomes congested, deceptive, intermittent, or denied.
A map of reported interference is useful, but it is not the same as a captured RF environment.
Engineers need to know what energy was present, when it appeared, how it changed, and how a receiver reacted. Without the underlying RF record, an anomalous result may be difficult to reproduce after the field event.
That is where RF capture and playback can strengthen test and evaluation. QRC's WBT-3202 is a self-contained software-defined radio platform designed to capture and replay RF spectrum for later processing. The platform covers 50 MHz to 18 GHz, provides up to 320 MHz of total instantaneous bandwidth through two independently tuned or phase-coherent transceivers, and includes internal preselection filtering.
For a navigation-resilience workflow, the value is not a claim that one recorder solves jamming or spoofing. The value is preservation. A representative environment can be collected during a controlled event, retained with timing and location context, and replayed into receivers or analytical systems in a laboratory. That allows developers to compare software versions, examine intermittent behavior, repeat a scenario, and determine whether a mitigation changed the outcome.
A disciplined workflow should include:
- A defined test plan and legal authorization for collection
- Synchronized timing and position references
- Documented antenna, gain, filtering, and bandwidth settings
- A clean reference capture alongside stressed conditions
- Protected storage and chain-of-custody procedures
- Receiver-level metrics that distinguish signal loss from broader system failure
The purpose is repeatability. As navigation interference becomes a recurring operating condition, resilient systems will require more than successful demonstrations under clean skies. They will require a defensible record of what the receiver encountered and a way to test the response again.
Ready to talk through a receiver-testing workflow? Request a technical discussion on WBT capture-and-replay for navigation and receiver testing.