Metirionic are specialists delivering advanced signal processing algorithms, optimization, and engineering services. From standalone software to turnkey engagements, Metirionic helps customers bring high‑accuracy ranging and angle estimation into production for consumer, IoT, automotive, RTLS, and secure access applications. Their software is currently supported on our Bluetooth LE modules.
The Bluetooth specification deliberately leaves the implementation and algorithms of Bluetooth Channel Sounding to industry, encouraging innovation and differentiation. Roundtrip Time (RTT) and Phase-Based Ranging (PBR) are referenced as baseline approaches, but both have notable shortcomings (multipath interference and signal scattering among them). Metirionic’s Advanced Ranging Stack (MARS) and unique Channel Impulse Response (CIR) capability have been extensively tested in both laboratory and application-specific environments for reliable accuracy even in high multipath conditions. Ezurio’s RF expertise and advanced antenna arrays further extend these capabilities, increasing the fidelity of ranging accuracy and enabling reliable angle estimation to determine position and location.
To support go-to-market adoption, Metirionic offers a PC evaluation application for experimenting with MARS directly on Ezurio-based solutions, particularly the Nordic nRF54 series. This platform provides hands-on visibility into ranging and angle estimation, giving customers a straightforward way to evaluate, prototype, and accelerate deployment. Developers can explore these resources in detail on Metirionic’s dedicated Ezurio webpage.
Metirionic’s signal processing expertise complements Ezurio’s advanced RF designs and multiantenna arrays. Together, they deliver advanced positioning solutions that scale from consumer, IoT, and RTLS to secure access and automotive applications.
As Bluetooth Channel Sounding specialists with more than a decade of continuous development, Metirionic brings advanced ranging and positioning capabilities into the application space — enabling precise distance measurement, angle estimation, and robust performance even in the most strenuous multipath environments. Beyond core technology, Metirionic also provides engineering services that help product teams translate demanding use cases and operational environments into technical requirements, clearing the runway to production.
Ezurio partners with Metirionic to pair advanced signal processing algorithms with our wireless modules and SOMs. Together, we speed customers to market with fully integrated hardware and software stacks, validated evaluation platforms, and production-ready positioning solutions. This partnership reduces risk, shortens development cycles, and delivers reliable wireless solutions across industrial, automotive, and secure access applications.
Bluetooth has long been recognized for audio streaming and data communications, powering everything from wireless headphones to connected sensors. Now developers can reuse the Bluetooth capability already present in billions of devices, using Channel Sounding to add precise location awareness alongside audio and data without specialized hardware. Roundtrip Time (RTT) and Phase-Based Ranging (PBR) are presented by the Bluetooth SIG as baseline approaches for channel sounding, but both have notable shortcomings (multipath interference and signal scattering among them).
Metirionic and Ezurio combine CIR-based signal processing with multi-antenna modules, and apply CIR to the frequency domain using an inverse fast Fourier transform (IFFT) to derive the time domain response. This captures the entire radio channel rather than just phase or roundtrip delay, delivering a complete view of the radio channel from which both distance and angle information can be derived with accuracy(even in multipath heavy environments).
Bluetooth Channel Sounding opens the door to a wide range of consumer and industrial applications: proximity services, secure access, “find my” functionality, location and tracking, and real time location systems (RTLS). For some, it serves as the primary positioning method. For others, it extends GPS coverage indoors, creating continuity between outdoor navigation and indoor positioning. In every case, it enables scalable, reliable location services that integrate naturally with the communications capabilities already built into Bluetooth.
Critically, the combination of Ezurio's antenna arrays and Metirionic's MARS signal processing enables systems to determine whether a device is inside or outside — a key capability for secure access and context-aware applications. This distinction improves reliability and mitigates false positives, ensuring that doors don’t unlock simply because someone walks past from the inside. It also supports smarter automation, where systems respond differently depending on whether a person is entering from outside or moving within an indoor space. The result is a versatile platform that supports solutions from everyday consumer devices to critical industrial infrastructure — all with accuracy and reliability that remain consistent across environments.
