Simxtract Bridges Field And Lab Global Navigation Satellite System Testing

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Testing With Real-World Insight: Field and Lab

Spirent Communications, now operating under Keysight Technologies, has introduced SimXTRACT, a satellite-navigation testing solution built to close the gap between outdoor trials and controlled bench simulation by turning real-world recordings into repeatable lab scenarios that can be replayed, inspected, and varied on demand.

A global navigation satellite system is the broad term for satellite-based positioning and timing services used for navigation, mapping, location services on phones and wearables, and precise timing in networks and infrastructure. In simple terms, a receiver listens for very faint, time-stamped radio signals from multiple satellites and uses the timing differences to work out where it is and what time it is.

Satellite-navigation testing is the process of verifying how well a receiver, device, or full positioning-and-timing system performs under expected and edge-case conditions. It matters because small positioning errors can cascade into unreliable features, safety risks, or poor user experience, and because robust testing helps confirm accuracy, reliability, and resilience before products reach customers or mission environments.Realistic satellite-navigation testing helps teams find failures that only appear in the real world, while keeping lab runs repeatable enough to confirm fixes and ship with confidence.

These signals are also vulnerable: they can be weakened or blocked by buildings, tunnels, foliage, or vehicle structures, and they can be disrupted by interference such as jamming (overpowering the signal) or spoofing (sending misleading signals that mimic real ones). That is why capturing what actually happened outdoors, and then reproducing it safely in the lab, is valuable for development and validation.

With SimXTRACT, signals gathered in authentic environments are rigorously deconstructed into discrete components and then driven into simulation, preserving real-world behavior throughout the product test cycle. In practice, teams capture a real drive or field session, import the recording into SimXTRACT, separate the composite reception into model-ready elements plus supporting measurements, generate a simulator-ready scenario, and then replay that scenario repeatedly in the lab while changing only the variables they need to investigate.

“Marrying live-environment insight with controlled, repeatable lab conditions means teams no longer need to compromise in this fast-moving field,” said Peter Terry-Brown, divisional chief executive of Spirent’s Positioning business. “Greater realism delivers higher accuracy, faster issue resolution, and a shorter route to market.”

Engineering teams typically depend on capture-and-replay or laboratory simulation to evaluate positioning, navigation, and timing systems and devices. Each method contributes to product development, yet neither alone blends real-world richness with the precise control required for research, receiver integration, or regression testing.

SimXTRACT unifies these strengths by ingesting field recordings and accurately separating them to yield lifelike drive data for Spirent simulators, so teams can iterate on the same real-world event in a controlled environment without repeatedly returning to the field.

Drawing on recordings and scenarios made with Spirent capture-and-replay hardware, the tool performs advanced signal decomposition and extracts key signal elements and supporting measurements, including:Line-of-sight componentsMultipath raysDoppler shiftCode-phase biasReceived powerAngle of Arrival (AoA)

That reconstructed environment is then turned into controllable scenarios for Spirent satellite-navigation simulators, trimming time spent in the field, lowering the cost and complexity of creating and collecting scenarios, and enabling repeatable, high-precision trials. By converting rare or hard-to-repeat field events into lab-ready scenarios, teams can run faster regression cycles, validate fixes immediately, and reduce schedule risk across integration and release milestones—accelerating time to market without sacrificing realism.

Accelerate Positioning, Navigation, and Timing Test Workflows

Along with capabilities to analyze recordings, as well as to query and reproduce precise conditions to target testing, SimXTRACT helps accelerate development across multiple industries through repeatable lab execution, safer testing of challenging scenarios, lower field costs, and tighter control of variables for debugging and verification.

“Across today’s high-precision positioning, navigation, and timing landscape, SimXTRACT reshapes how you design, test, and debug positioning-enabled systems,” Terry-Brown said. “You can carry real-world context into every stage of product realization, reducing time and cost while elevating product quality.”

In day-to-day development, this kind of workflow supports faster root-cause analysis by letting teams reproduce a failure exactly, compare results before and after changes, and share the same scenario across groups working on receiver integration, performance tuning, and regression. It also supports more targeted investigation by letting engineers focus on specific captured moments rather than re-running full field campaigns to re-create them.

As described, SimXTRACT’s key features include importing real-world recordings, decomposing complex receptions into simulator-usable components with supporting measurements, and generating controllable scenarios that can be replayed repeatedly for research, integration, and regression. Its datasheet-style information typically summarizes practical details such as supported recording and scenario inputs/outputs, compatibility with Spirent simulator workflows, software and computing requirements, and configuration or licensing options used to match different test setups.

For more information about SimXTRACT, see the product page on Spirent’s website.